Tektronix VM700T User Manual
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Tektronix VM700T User Manual

Tektronix VM700T User Manual

Video measurement set option 01 ntsc measurements
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VM700T Video Measurement Set
Option 01 NTSC Measurements
070-9648-02

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  • Page 1 User Manual VM700T Video Measurement Set Option 01 NTSC Measurements 070-9648-02...
  • Page 2 User Manual VM700T Video Measurement Set Option 01 NTSC Measurements 070-9648-02 This document applies to firmware version 2.10e and above.
  • Page 3 Commercial Computer Software – Restricted Rights clause at FAR 52.227-19, as applicable. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved.

  • Page 4: Table Of Contents

    ............2–74 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 5 ....... . 3–7 RS-170A Equalizer and RS-170A Serration ......3–8 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 6 ............Index VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 7 Figure 2–40: Jitter Long_Time menu tree ......2–72 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 8 ......2–131 Figure 2–77: VITS ID full VITS waveform display ....2–132 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 9 ....... 2–135 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 10 ....... A-10 Table A-38: Signal-to-Noise Ratio Measurements ....A-10 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 11 Table of Contents viii VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 12: Preface

    The manual contents are arranged in the following order: Getting Started provides a brief overview of Measure mode and Auto mode measurement operation. Refer to the VM700T Option 01 & Option 11 User Manual for more complete operating instructions for the VM700T Video Measurement Set.
  • Page 13 Preface VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 14: Getting Started

    Getting Started...

  • Page 16: Auto Mode

    Getting Started The VM700T Option 01 (NTSC) gives you access to a large variety of interac- tive (Measure mode) and automatic (Auto mode) measurements. Measure mode measurements are user-selectable, interactive, graphical applica- tions that make measurements on video signals. The Measure Mode section of this manual, describes each Measure mode measurement.
  • Page 17 Getting Started The VM700T may be programmed for remote operation. See the VM700T RS-232 Interface Programmer Manual for information on programming and operating the VM700T remotely. 1–2 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 18: Measure Mode

    Measure Mode...

  • Page 20: Table 2-1: Measure Mode Measurements

    Measure Mode Measure mode of the VM700T Video Measurement Set Option 01 gives you a large selection of interactive, graphical measurements for NTSC video signals. Available Measure mode measurements and the signal qualities they measure include those shown in Table 2–1.
  • Page 21 Signal-to-noise ratio (various weighting filters available) Miscellaneous ColorBar From the color bar signal: luminance level, chrominance level, chrominance phase ICPM Incidental Carrier Phase Modulation VITS ID Identify signals in vertical interval 2–2 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 22: Bar Linetime

    Numerical readouts provide measurement results in mV, %, and sec, as appropriate. The readouts provided are as follows: Bar Level (ref. b1) gives the bar top amplitude relative to the Black Level Reference (b1) level. 2–3 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 23: Bar Linetime Menu

    32. To change the Average Num value, touch the Average Num soft key to highlight it, rotate the knob until the desired weighting factor appears, then touch the Average Num soft key again. 2–4 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 24: Figure 2-2: Bar Linetime Menu Tree

    Use (2) Reference Reference Acquire Submenu Block Block Special Block Lines 3 Step 2 Position Mode Special Position Submenu Reference Bar Top Exit Default Default Default Figure 2–2: Bar LineTime menu tree 2–5 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 25 (Figure 2–3) used to set the location on the waveform where the measurement is made. Block turns on Block mode. The block starts at the Mode system line. 2–6 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 26: Figure 2-3: Bar Linetime Special Position Display

    Set Default. Ref. (b1) sets the black level, or zero, measurement location. The default measurement location varies with the signal type (for example FCC and NTC-7). 2–7 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 27 50% rising edge and the 50% falling edge times of the bar. Exit leaves the Special Position submenu and displays the Bar LineTime display. 2–8 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 28: Bounce

    High APL region. Dev. gives the % of deviation on the Blank level (Back Porch level) relative to the amplitude of the bounce signal in the High APL region. 2–9 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 29 Low APL region relative to the average of both sync amplitude. NOTE. Each deviation result has a max., a min., and a P-P value, in order, and max. is always positive and min. is always negative. 2–10 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 30: Bounce Menu

    Every Every Every Per Field 3 Fields 4 Fields Field Frame Cursor Submenu Cursor Cursor 1 Cursor 2 Cursor Cursor On Relative 100% Active Active Track Figure 2–5: Bounce menu tree 2–11 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 31 Selecting a new sampling speed from the displayed menu choices restarts the measurement. Sync provides soft keys to set the sync source. Source Selecting a new sync source from the displayed menu choices restarts the measurement. 2–12 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 32 Sync Source SubMenu Sync A selects the A input for the sync source. Sync B selects the B input for the sync source. Sync C selects the C input for the sync source. 2–13 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 33 Active position cursor 1. Cursor 2 displays cursors and permits the knob to Active position cursor 2. Cursor Track displays cursors and permits the knob to position both cursors together (track). 2–14 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 34: Typical Measurement Results

    Measure Mode Typical Measurement See Figure 2–4 for the waveform display for Example 1. Results Example 2–15 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 35: Burst Frequency

    Reference soft key. (Refer to Setting the Reference Burst Frequency on page 2–18.) If you use the color burst from another channel (or the internal frequency reference) as a reference frequency on a Dual-Standard VM700T, both signals should use the same standard (NTSC or PAL). 2–16...

  • Page 36: Burst Frequency Menu

    Internal of the internal crystal. A reference frequency stored with the Zero Set soft key is required for calibration. Reference sets the burst frequency reference to Ch. B Channel B. 2–17 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 37: Setting The Reference Burst Frequency

    Zero Set soft key. The VM700T displays “Zero Set,” followed by the date and time, followed by the message “No CAL.” The stored value becomes the internal reference, and remains so until the VM700T is powered down or until another reference signal is stored.

  • Page 38: Chromlum Gaindelay

    Lum Gain (%) in the active Measure_Limits file). The position of the + within the box indicates delay (in nanoseconds) along the horizontal scale and gain (in %, relative to luminance) on the vertical scale. 2–19 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 39: Chromlum Gaindelay Menu

    Use (1) Use (2) Reference Reference Acquire Submenu Special Block Block Block Position Mode Lines 3 Step 2 Special Position Submenu Pulse Pos Exit Default Default Figure 2–9: ChromLum GainDelay menu tree 2–20 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 40 Acquire submenu that controls how the signal is acquired for the specific measurement. VITS causes the VM700T to search the insertion test Search signals for a signal appropriate for the measurement. If an appropriate signal is not located, the message Not found displays briefly on the display.

  • Page 41: Figure 2-10: Chromlum Gaindelay Special Position Display

    Figure 2–10 shows the ChromLum GainDelay Special Position display and submenu. Figure 2–10: ChromLum GainDelay Special Position display 2–22 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 42 The default pulse position is determined automatically by the type of signal being measured. Exit leaves the Special Position submenu and displays the ChromLum GainDelay display. 2–23 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 43: Chrominance Ampm

    10 kHz, and 100 kHz filters, as well as low-pass 100 kHz, 500 kHz, and 1.0 MHz filters are available by touching the Menu button and the Filters Selection soft key. Figure 2–11: Chrominance AMPM display 2–24 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 44: Chrominance Ampm Menu

    32. To change the Average Num value, touch the Average Num soft key to highlight it, rotate the knob until the desired weighting factor appears, then touch the Average Num soft key again. 2–25 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 45: Figure 2-12: Chrominance Ampm Menu Tree

    Selection low-pass filtering for the input signal. Rescale restores the display to its default scale, with meters reading from –60 dB to –20 dB. 2–26 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 46 Burst the Color Burst signal. The 100 Hz high-pass and 1 MHz low-pass filters are automatically selected. Field 1 specifies that the measurement is to be made only on field 1. 2–27 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 47 Averaging is off or on. If Averaging is on, the text also indicates the current weighting factor used for averaging, as well as the number of sampling points acquired. 2–28 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 48: Chrominance Freqresp

    The Chrominance FreqResp measurements require a special multiple-burst signal (see Figure 2–15). The Chrominance Frequency Response signal from either a Tektronix TSG130A Multiformat Signal Generator or a Tektronix 1910 Digital Generator with the special signal added is recommended. Figure 2–13: Chrominance FreqResp display 2–29...

  • Page 49: Chrominance Freqresp Menu

    Line 3 Step 2 Special Position Submenu FlagStart Flag Width Packet Center Width Exit Default Default Default Default Default Displayed only when Packet # is selected. Figure 2–14: Chrominance FreqResp menu tree 2–30 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 50 Acquire submenu that controls how the signal is acquired for the specific measurement. VITS causes the VM700T to search the insertion test Search signals for a signal appropriate for the measurement. If an appropriate signal is not located, “Not found” displays briefly on the screen.
  • Page 51 You can also set the percentage by rotating the knob; rotating it counterclockwise will (eventually) set the reference level back to AUTO. 2–32 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 52 Special Position Submenu returns each measurement location to its default Default position as given in the Measurement Locations file. If any other soft key is highlighted, only that measurement location is changed. 2–33 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 53: Figure 2-15: Chrominance Freqresp Special Position Display

    Width allows you to set the measurement area of the Default packet by rotating the knob. Exit leaves the Special Position submenu and displays the Chrominance FreqResp screen. 2–34 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 54: Chrominance Nonlinearity

    The measurement is referenced to the 714 mV level, and is expressed as a percentage of 714 mV. 2–35 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 55: Chrominance Nonlinearity Menu

    Block Block Position Mode Lines 3 Step 2 Special Position Submenu Packet 1 Packet 2 Packet 3 Ref Pos Exit Default Default Default Default Default Figure 2–17: Chrominance NonLinearity menu tree 2–36 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 56 Acquire submenu that controls how the signal is acquired for the specific measurement. VITS causes the VM700T to search the insertion test Search signals for a signal appropriate for the measurement. If an appropriate signal is not located, the message “Not found”...

  • Page 57: Figure 2-18: Chrominance Nonlinearity Special Position Display

    Figure 2–18 shows the Chrominance NonLinearity Special Position display and submenu. Figure 2–18: Chrominance NonLinearity Special Position display 2–38 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 58 The default reference measurement location is automati- cally defined for the type of signal being measured. Exit leaves the Special Position submenu and displays the Chrominance NonLinearity screen. 2–39 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 59: Colorbar

    The ColorBar measurement is made on the current system line. The System Default Measurement Locations file specifies that the ColorBar measurement is made on field 2, line 17. 2–40 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 60: Colorbar Menu

    Average Num soft key again. Reference displays the Reference submenu which (1) stores the currently displayed values for use as a reference; or (2) displays previously stored reference values. 2–41 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 61: Figure 2-20: Colorbar Menu Tree

    Not found displays briefly. Rescale sets the expansion factor of the display to an appropriate scaling factor for the ColorBar measurement display graticule. The x- and y-axes adjust to accommodate the rescaled display. 2–42 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 62 Position waveform display used to set the locations on the waveform where the measurement is made. Figure 2–21 shows the ColorBar Special Position display. 2–43 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 63 White, Yellow, Blue, Black, and Measure soft keys. NOTE. If severe luminance nonlinear distortion is present, the VM700T may not be able to find all the color packets expected. In such cases, you must use manual positioning to set the location of each packet.

  • Page 64: Figure 2-21: Colorbar Special Position Display

    Measure Mode Figure 2–21: ColorBar Special Position display 2–45 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 65: Dgdp (Differential Gain Differential Phase)

    Figure 2–22: DGDP display The DGDP measurement can use an FCC Composite, NTC-7 Composite, or 5- or 10-step modulated staircase signal. The essential signal element is a modu- lated staircase (up to 10 steps). 2–46 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 66: Dgdp Menu

    32. To change the Average Num value, touch the Average Num soft key to highlight it, rotate the knob until the desired weighting factor appears, then touch the Average Num soft key again. 2–47 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 67 Reference reference to which measured values are compared. If no reference value has been stored, touching either soft key displays a message that the reference is not defined. 2–48 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 68: Figure 2-24: Dgdp Special Position Display

    The default number of Block Lines to average is 3. Block sets the number of lines to step in the block. The Step default number of lines to step is 2. Figure 2–24: DGDP Special Position display 2–49 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 69 VM700T displays soft keys to set measurement locations manually. NOTE. If severe luminance nonlinear distortion is present, the VM700T may not be able to resolve all the steps that were present in the original signal. In such cases, you must use manual positioning to set the location of each staircase step.

  • Page 70: Groupdelay Sinx_X

    GroupDelay SinX_X GroupDelay SinX_X measures group delay and amplitude response versus frequency. This measurement requires a sin(x)/x signal. The VM700T is set up to use a sin(x)/x signal from a 1910 signal generator by default; if the signal is generated by a different source, you may need to use the Special Position submenu of the Acquire soft key to specify the first and second pulse positions in the test signal.

  • Page 71: Figure 2-26: Groupdelay Sinx_X Bothpulse Response Display

    The scale of the amplitude display has been expanded to easily show the gain difference in the two responses. 2–52 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 72: Groupdelay Sinx_X Menu

    Pul 1 Pos Pul 2 Offs Exit 19.6 32.06 17.9 Default Pulse Mode Auto Adj. Cursor Submenu Cursor Cursor Active Displayed when Pul2 Offs is selected. Figure 2–27: GroupDelay SinX_X menu tree 2–53 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 73 Rescale sets the expansion factor of the display to an appropriate scaling factor for the GroupDelay SinX_X measurement display graticule. The x- and y-axes adjust to accommodate the rescaled display. 2–54 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 74 System M selects the System M graticule. Limit File uses the values in the Measurement Limits file to create the graticule. 2–55 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 75 Set Default returns each measurement location to its default position as determined by the sinx/x signal generated by the Tektronix 1910 Digital Generator. If any other soft key is highlighted, only that measurement location is changed. Double , when highlighted, causes the VM700T...

  • Page 76: Figure 2-28: Groupdelay Sinx_X Special Position Display

    Composite Test Signals, etc. For best results, use the largest value possible. Smaller areas may result in lost low-frequency accuracy and reduced frequency resolution. Exit leaves the Special Position submenu and displays the GroupDelay SinX_X screen. 2–57 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 77 , when highlighted, displays the cursor. It appears in the same position it was in the last time it was active. Cursor Active , when highlighted, allows you to move the cursor by rotating the knob. 2–58 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 78: H_Blank

    Digital readouts above the display show the minimum values for horizontal blanking (that is, the rightmost start time and the leftmost end time) over the range of lines selected. 2–59 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 79: H_Blank Menu

    20 IRE. Meas. Line Start sets the measurement start line. Meas. Line End sets the measurement end line. Rescale formats the display graticule to an appropriate resolution. 2–60 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 80: H_Timing

    H_Timing Menu Pressing the Menu button when the H_Timing measurement runs displays the H_Timing menu (Figure 2–32). Main Menu Average Units RS–170A Rescale Num 32 Secs Figure 2–32: H_Timing menu tree 2–61 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 81 Rescale sets the expansion factor of the display to an appropriate scaling factor for the H_Timing measurement display graticule. The x- and y-axes adjust to accommodate the rescaled display. 2–62 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 82: Icpm (Incidental Carrier Phase Modulation)

    ICPM (Incidental Carrier Phase Modulation) The ICPM measurement measures Incidental Carrier Phase Modulation of an RF carrier, using the quadrature output of a demodulator such as the Tektronix 1450 Series Demodulator Mainframe with a TDC-10 Tunable Down Converter or a TDC Fixed-Channel Down Converter for your channel.

  • Page 83: Figure 2-33: Icpm Display; No Icpm Errors Present

    ICPM, but is not). Given that the demodulator is functioning correctly, however, ICPM errors generally indicate a linearity problem in the high-power stages of the transmitter. 2–64 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 84: Icpm Menu

    ICPM angle (the difference between current maximum and minimum measured ICPM angles). Figure 2–34: ICPM display; large ICPM error present ICPM Menu Pressing the Menu button when the ICPM measurement runs displays the ICPM menu (Figure 2–35). 2–65 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 85: Figure 2-35: Icpm Menu Tree

    Graticule displays the Graticule submenu that controls the displayed graticule and the maximum-angle tracking lines. Measure displays the Measure submenu that determines which data points are used in the ICPM measurement. 2–66 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 86 The maximum angle allowed is 89 degrees. Below the 1-degree setting is AUTO, which causes the maximum graticule angle to be maintained at an optimum value based on the current expansion and position. 2–67 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 87 OFF. Selected % Car when highlighted, causes the currently highlighted Min % Car or Max % Car soft key to be set to OFF, and the appropriate edge-value exclusion is removed. 2–68 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 88: Jitter

    A digital readout above the display shows the maximum value of jitter for the lines being measured. The Jitter measurement can use any video signal as input. Figure 2–36: Jitter display 2–69 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 89: Jitter Menu

    Rescale sets the expansion factor of the display to an appropriate scaling factor for the Jitter measurement display graticule. The x- and y-axes adjust to accommodate the rescaled display. 2–70 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 90: Jitter Long_Time

    (in s or ns, depending on the scale of jitter) on the y-axis and time (in seconds) on the x-axis. The Jitter Long_Time measurement can use any video signal as input. Figure 2–38: Jitter Long_Time spectrum display 2–71 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 91: Figure 2-39: Jitter Long_Time Waveform Display

    Main Menu (2) Average Freq. Lock Jitter Cursors Rescale Num 32 1 Sec Waveform Cursor Submenu Cursor 1 Cursor 2 Cursor 1 Cursor 2 Active Active Figure 2–40: Jitter Long_Time menu tree 2–72 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 92 Cursor 2 Active , when highlighted, assigns the control knob to positioning of cursor 2. If cursor 2 is not on when Cursor 2 Active is selected, cursor 2 is turned on. 2–73 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 93: K_Factor

    K_Factor K_Factor measures K-2T, K-PB, and Pulse-to-Bar Ratio. The K_Factor measurement can use an FCC Composite, NTC-7 Composite, or a Tektronix generator 2T Pulse & Bar signal for input. The essential element of the input signal is a 2T pulse. A bar is also needed for measured K-PB and Pulse-to-Bar ratio.

  • Page 94: K_Factor Menu

    Make Graticule appears only when Special Graticule is selected. The ”Set to” choices appear only when a coefficient has been selecte in one of the three editable graticule definition lines. Figure 2–42: K_Factor menu tree 2–75 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 95 (from –9.9% to n.n% 9.9% of pulse height) from the reference point selected with Normal, Left, or Right soft keys. Offset Reset returns the graticule clamp offset to 0.0%. 2–76 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 96: Figure 2–43: K_Factor Measurement Right Reference Clamped

    The default gain is 5.0%. Graticule turns on graticule tracking mode. When Track graticule tracking is on, the size of the graticule tracks the actual waveform. 2–77 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 97 Area 1 is the center area of the graticule. Area 2 is from the center area to the end area of the graticule. Area 3 is the left and right end areas of the graticule. 2–78 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 98 The default number of Block Lines to average is 3. Block sets the number of lines to step in the block. The Step 2 default number of lines to step is 2. 2–79 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 99: Figure 2–44: K-Factor Special Position Display

    Bar Pos. Default allows you to choose the bar location in the signal by rotating the knob. The VM700T finds the exact center, but this location can be reset if desired by rotating the knob. Ref. Pos.

  • Page 100: Defining Your Own Graticule

    To change the shape of the upper or lower graticule, touch the corresponding soft key. This displays three editable lines of equations (Figure 2–45). Figure 2–45: Make Graticule display with lower graticule selected 2–81 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 101 You can adjust the gain value with the Graticule Gain soft key of the Graticule submenu. To adjust the gain, highlight the soft key, turn the knob until the desired gain value is displayed; then touch the soft key again. 2–82 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 102: Level Meter

    IRE units, delta between two points referenced to a value in percentage, or absolute between one point and zero (ground) in either IRE units or percentage. Figure 2–46: Level Meter display 2–83 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 103: Level Meter Main Menu

    Measurement Locations file, change the amplitude units to volts; in the editable Video Source file, change the source selection to the new Measurement Locations file name. See the VM700T Operator’s Manual, Configuring the VM700T, for further information on creating, editing, and selecting user-created configura- tion files.

  • Page 104: Figure 2–47: Level Meter Menu Tree

    Set Ref Cycles (100%) Pos. (b) Place (b) Relative No. 1 Measure Set Ref Cycles (100%) Acquire Submenu Block Block Block Mode Lines 3 Step 3 Figure 2–47: Level Meter menu tree 2–85 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 105: Figure 2–48: Display Limits Menu Showing Undefined Measurement Points

    Acquire displays a menu used to select block acquisition mode and control the number of lines in the block acquired and the number of lines to step in a block. 2–86 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 106: Figure 2–49: Measure Position Display To Locate The Measurement Points On A Signal

    Level Meter viewing area. After adjusting the Max and Min display limits to new values, using Rescale will adjust the display for the optimum resolution using those new limits. 2–87 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 107 Also, the percentage setting of the soft key may be set between 0 and 10% by rotating the control knob while holding your finger on the Set Max to nn% menu choice. The default is 10%. 2–88 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 108 3 cycles. This setting is associated with the selected cursor, and the horizontal size of the cursor box changes as the number in the soft key box is changed to indicate the measure- ment area on the displayed waveform. 2–89 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 109 In Figure 2–50, the reference is set to 100 IRE as the 100% reference, and the measurement is based on the difference between the vertical position of the cursor and zero as a result of also selecting DC Cpl. ABS. Meas. 2–90 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 110: Figure 2–50: Display Position With Measurement Referenced To 100 Ire As 100%

    (ground) as seen in Figure 2–50. The Level Meter display that results from setting up for a referenced and absolute amplitude is seen in Figure 2–51. 2–91 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 111: Figure 2–51: Level Meter Display As A Result Of The Setup Shown In Figure 2–50

    Block mode Lines n acquisition from 2 to 32 lines. Block determines the size of the step for a Block mode Step n acquisition from 1 to 263 lines. 2–92 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 112: Setting Up A New Measurement Window

    After setting the limits exactly where you need them, return to the first level menu and press the Rescale soft key again to optimize the Level Meter display for the new display limits. 2–93 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 113: Line Frequency

    Line Frequency Menu Pressing the Menu button when the Line Frequency measurement runs displays the Line Frequency menu (Figure 2–53). Main Menu Average Rescale Num 32 Figure 2–53: Line Frequency menu tree 2–94 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 114 Rescale sets the expansion factor of the display to an appropriate scaling factor for the Line Frequency measurement display graticule. The x- and y-axes adjust to accommodate the rescaled display. 2–95 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 115: Luminance Nonlinearity

    The Luminance NonLinearity measurement can use an FCC Composite, NTC-7 Composite, or stair-step signal for input. The essential elements in the input signal are up to ten stair steps. Figure 2–54: Luminance NonLinearity display 2–96 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 116: Luminance Nonlinearity Menu

    Average Num soft key again. Reference displays the Reference submenu which (1) stores the currently displayed values for use as a reference; or (2) displays previously stored reference values. 2–97 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 117 Reference reference to which measured values are compared. If no reference value has been stored, touching either soft key displays a message that the reference is not defined. 2–98 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 118: Figure 2–56: Luminance Nonlinearity Special Position Display

    The default number of Block Lines to average is 3. Block sets the number of lines to step in the block. The Step default number of lines to step is 2. Figure 2–56: Luminance NonLinearity Special Position display 2–99 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 119 (described below) appear to allow you to set measurement locations manually. NOTE. If severe luminance nonlinear distortion is present, the VM700T may not be able to resolve all the steps that were present in the original signal. In such cases, you must use manual positioning to set the location of each staircase step.

  • Page 120: Multiburst

    The MultiBurst measurement automatically identifies FCC MultiBurst, NTC-7 Combination, or the Tektronix signal generator MultiBurst signals. The essential element in any signal used for the MultiBurst measurement is multiple bursts. Figure 2–57: MultiBurst display 2–101...

  • Page 121: Multiburst Menu

    Default Default Default Default Flag (Auto) is displayed only when the 0 dB Ref softkey is set to Flag. Displayed only when Packet # is selected. Figure 2–58: MultiBurst menu tree 2–102 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 122 Not found displays briefly on the screen. Rescale sets the expansion factor of the display to an appropriate scaling factor for the MultiBurst measurement display graticule. The x- and y-axes adjust to accommodate the rescaled display. 2–103 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 123 Figure 2–59 shows the MultiBurst Special Position display. Block turns on Block mode. The block starts at the Mode system line. 2–104 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 124: Figure 2–59: Multiburst Special Position Display

    Flag Start sets the location of the leading edge of Default the MultiBurst flag. Flag Width sets the width of the MultiBurst flag. Default 2–105 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 125 Default and Width Default. Center sets the center location of the packet. Default Width sets the measurement area of the packet. Default Exit leaves the Special Position submenu and displays the MultiBurst screen. 2–106 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 126: Noise Spectrum

    32. To change the Average Num value, touch the Average Num soft key to highlight it, rotate the knob until the desired weighting factor appears; then touch the Average Num soft key again. 2–107 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 127: Figure 2–61: Noise Spectrum Menu Tree

    Relative to Reference Reference submenu which selects the reference to use for compensation in the measurement. When a stored reference is selected, the currently measured value is compared to the stored reference value. 2–108 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 128 Reference reference to which measured values are compared. If no reference value has been stored, touching either soft key displays a message that the reference is not defined. 2–109 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 129 The default number of Block Lines to average is 3. Block sets the number of lines to step in the block. The Step default number of lines to step is 2. 2–110 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 130: Figure 2–62: Noise Spectrum Input Gate Display

    Area Pos assigns to control knob to positioning the signal area used for the Noise Spectrum measurement. Exit leaves the Input Gate menu and returns to the Noise Spectrum display. 2–111 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 131 Low Pass 5.0 MHz soft key and turn the knob clockwise. The Low Pass 6.0 MHz filter remains selected until you touch the Low Pass 5.0 MHz soft key again and turn the knob counterclockwise, or until the VM700T is powered off. Unified selects the standard CCIR unified Weighting weighting filter.

  • Page 132: Sch_Phase

    Phase difference Sync Relative Timing difference 50% point of sync leading edge Dual SCH_Phase relative channel Figure 2–63: Timing relationships for SCH_Phase measurements and Sync Relative Timing and Burst Relative Phase measurements 2–113 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 133: Sch Phase Measurement

    Channel A and reference is Channel B) two additional measurements are displayed in both bar graph and numerical readout displays (see Figure 2–65). The bar graphs give a quick visual indication of closeness of channel match. 2–114 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 134: Sch_Phase Menu

    Pressing the Menu button displays the SCH_Phase menu (Figure 2–66) used to make operational choices for the type of display and reference channel selec- tions. In each case, the source channel remains the one that is selected by the A/B/C SOURCE buttons. 2–115 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 135: Figure 2–66: Sch_Phase Menu Tree

    Dual SCH Display Submenu Source sets the color framing reference to the current Only signal source as selected by the front-panel A/B/C buttons. 2–116 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 136: Figure 2–67: Sch_Phase Full-Field Display

    50% of the display area. Figure 2–67 shows the SCH_Phase full-field display and Figure 2–68 shows the expanded display obtained with the Rescale soft key. Figure 2–67: SCH_Phase full-field display 2–117 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 137: Figure 2–68: Rescaled Sch_Phase Full-Field Display

    Measure Mode Figure 2–68: Rescaled SCH_Phase full-field display 2–118 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 138: Shorttime Distortion

    Make Graticule submenu of the Graticule submenu. (Refer to Defining Your Own Graticule later on page 2–124 for more information.) Figure 2–69: ShortTime Distortion display 2–119 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 139: Shorttime Distortion Main Menu

    Falling Edge only, and both Rising Edge and Falling Edge. The text readout on the display follows the graph selected. Acquire displays the Acquire submenu, which controls signal acquisition for ShortTime Distortion. 2–120 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 140: Figure 2–70: Shorttime Distortion Menu Tree

    Default Default Figure 2–70: ShortTime Distortion menu tree Graticule Submenu IEEE-511 selects the IEEE-511 Standard Short- Graticule Time Distortion Graticule. Special selects the Special (user-defined) Graticule graticule for ShortTime Distortion measurements. 2–121 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 141 Special Position submenu and Position display (Figure 2–71) which sets the measurement locations for the ShortTime Distortion measurement. Block turns on Block mode. The block starts at the Mode system line. 2–122 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 142: Figure 2–71: Shorttime Distortion Special Position Display

    (Bar Left or Bar Default Right) to its default location. If none are selected, all are reset. Default locations are specified in the current Measurement Locations file. Figure 2–71: ShortTime Distortion Special Position display 2–123 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 143: Defining Your Own Graticule

    To select a line to edit, turn the knob when no coefficient of a line is selected (that is when an edit box is visible around any coefficient in the selected line). 2–124 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 144: Figure 2–72: Make Graticule Display With Inner Graticule Selected

    5%. You can adjust the gain value with the Graticule Gain soft key of the Graticule submenu. To adjust the gain, highlight the soft key, turn the knob until the desired gain value is displayed; then touch the soft key again. 2–125 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 145: Twofield

    525 points for each. The items displayed are selected by means of the TwoField Menu soft keys; the default is to display sync tip, back porch, and luminance. The TwoField measurement requires a field square wave as input. Figure 2–73: TwoField display 2–126 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 146: Twofield Menu

    Average Num soft key to highlight it, rotate the knob until the desired weighting factor appears; then touch the Average Num soft key again. Display calls up the Display submenu for selection of waveforms. 2–127 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 147 The nn.n sec center tick of the displayed box shows the measurement position. Select and turn the knob to change the location from the horizontal sync. 2–128 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 148: Figure 2–75: Twofield Special Position Display

    A, B, or C input for the sync source. A/B/C External selects the external sync input for the sync Sync source. Peak selects peak luminance level in the active area for Luma the display. 2–129 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 149 Cursor 1/2 displays cursors and causes the knob to Active move cursor 1 or 2. Cursor displays cursors and causes the knob to move Track both cursors. 2–130 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 150: Vits_Id

    You can select a new system line by touching the position of any line shown on the display. Figure 2–76: VITS_ID signal ID display 2–131 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 151: Vits Id Menu

    Main Menu Signal shows VITS names. The waveform of the system line is also displayed when menus are deselected. Full VITS shows waveform lines 10 to 22 for both Waveform fields. 2–132 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 152: V_Blank

    2, line 5. Figure 2–82 shows the V_Blank V-sync display. This is essentially the same as the full V_Blank display, except that the vertical sync area is shown. Figure 2–79: V_Blank full display 2–133 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 153: Figure 2–80: V_Blank Equalizer Pulse Display

    Measure Mode Figure 2–80: V_Blank equalizer pulse display Figure 2–81: V_Blank serration pulse display 2–134 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 154: V_Blank Menu

    Average Num soft key to highlight it, rotate the knob until the desired weighting factor appears; then touch the Average Num soft key again. Equalizer Pulse displays an equalizer pulse and measures it. 2–135 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 155: Video Standard

    When you press the Measure button and touch the Video Standard soft key, the VM700T recognizes the standard of the incoming signal on the current channel, and uses the correct Video_Source file for that standard.
  • Page 156 Measure Mode executed and lists the standard recognized for each input channel. If no standard was recognized for a channel, “––––” displays as the measurement result. 2–137 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 157 Measure Mode 2–138 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 158: Auto Mode

    Auto Mode...

  • Page 160: Input Signals

    Auto Mode Auto mode of the VM700T performs many industry-standard measurements with great speed and accuracy. To do so, the VM700T selects portions of the video input signal, converts them from analog to digital representation, then analyzes the digitized values to produce numeric measurement results.

  • Page 161: Measurement Methods

    The peak carrier and Zero Carrier Pulse amplitudes are not displayed by the Carrier Pulse VM700T, but are measured and used as a reference for the Bar Top, Blanking Level, Blanking Variation, Sync Variation, FCC Multiburst Flag, and NTC7 Multiburst Flag measurements. These measurements are reported as % Carr.

  • Page 162: Blanking Variation And Sync Variation

    1. The samples are acquired from every third line, starting at field 1, line 10, and ending with field 1, line 262. The hardware low-pass filter is used. 3–3 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 163: Burst Amplitude

    Therefore, the second acquisition is in field 2 at line 56). FCC H Blanking. FCC Horizontal Blanking is measured between the points on the leading and trailing edges of horizontal blanking that are equivalent to 10% of sync (nominally +4 IRE). 3–4 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 164: Rs-170A Horizontal Blanking Interval Timing Measurements

    50% of sync (nominally 20 IRE). RS-170A Sync Width. RS-170A Sync Width is measured between the 50% points on the leading and trailing edges of horizontal sync (nominally –20 IRE). 3–5 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 165: Blank 4 Ire F1 And V Blank 4 Ire F2

    (end of blanking). If sync is present, each line has any tilt removed using the back porch of one line (line A for this example) and the front porch of the next 3–6 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 166: Fcc Equalizer And Fcc Serration

    2, line 2 are used. The result is expressed as a % of sync width, which is determined from 32 occurrences of sync taken one frame, six lines apart (the same sampling pattern as the Horizontal Timing measurements). 3–7 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 167: Rs-170A Equalizer And Rs-170A Serration

    Setup measurement description above. The VIRS luminance reference level is the average of 16 sample values, centered around the sample located 30 s after the 50% point on the pedestal leading edge. 3–8 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 168: Line Time Distortion And Pulse-To-Bar Ratio

    Pulse-to-Bar Ratio. Pulse-to-bar ratio is measured as the peak amplitude of the 2T pulse, expressed as a % of the bar amplitude. 3–9 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 169: T Pulse K-Factor And Ieee-511 St Dist

    1T bar transition (ANSI/IEEE Std 511-1979, Section 4.4, Appendix B).The measurements are made on the leading edge of the NTC-7 Composite VITS bar. Measurement results are reported in units of %SD. 3–10 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 170: S/N Measurements

    “truer” measurement if you suspect that correlated noise is present. Five different signal-to-noise measurements are made by the VM700T using the CCIR Recommendations 567 Unified Filter Set: NTC7 Unweighted, NTC7 Lum-Weighted, Unif Unweighted, Unif Lum-Weighted, and S/N Periodic (there is no S/N.2 Periodic measurement)
  • Page 171 The filter is described in CCIR Rec. 567. The Luminance Weighting filter has a much lower cutoff frequency than the Unweighted filter, and is derived directly from CCIR Rec. 567. 3–12 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 172 12.5T pulse.(NTC-7, Section 3.7). The VM700T measures the time delay as the difference between the locations of the centers of the modulated 12.5T pulse luminance and chrominance compo- nents. The measurement result is positive if the chrominance pulse center location follows (lags) the luminance pulse center location.

  • Page 173: Differential Gain, Differential Phase, Luminance Nonlinearity, Relative Burst Gain, And Relative Burst Phase

    The burst amplitude on a line is the peak-to-peak amplitude averaged over four subcarrier cycles in the center of burst. Then, (burst amplitude –packet amplitude) % Relative burst gain = x 100 packet amplitude 3–14 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 174: Multiburst Measurements

    The measurements are made on the 20 IRE, 40 IRE, and 80 IRE chrominance packets. The location of the NTC-7 Combination VITS signal is specified by the NTC-7 Combination entry in the appropriate Measurement Locations file. 3–15 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 175: Icpm

    VM700T. Video may be connected to either channel A or B, but the quadrature output must always be connected to the channel C input. The Zero Carrier Pulse must be enabled at the demodulator, and must be selected for use as a reference in the appropriate Measurement Locations file.

  • Page 176: Sch Phase

    Blanking level is the arithmetic mean of eight consecutive sample values (0.56 s), starting 3.6 s after the approximate 50% point on the trailing edge of sync. Sync tip level is the mean of 12 consecutive samples 3–17 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 177: Field Time Distortion

    Eight of these are used to determined the approximate locations of waveform features such as the center of burst, the center of the white bar, and the centers of the six color bars. 3–18 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 178 The luminance level of each color bar is the arithmetic mean of 16 consecutive sample values centered around the approximate center of the color bar luminance level relative to the black step. 3–19 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 179 Auto Mode 3–20 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 180 Appendices...

  • Page 182: Table A-1: Bar Line Time

    The instrument must be in an environment with temperature, altitude, humidity, and vibration within the operating limits described in Appendix A: Specification of the VM700T Video Measurement Set Option 01 (NTSC) and Option 11 (PAL) User Manual. The instrument must have had a warm-up period of at least 20 minutes.

  • Page 183: Table A-2: Bounce

    Absolute Mode Accuracy AM Noise –20 dB to –80 dB 1 dB (–20 dB to –60 dB) PM Noise –20 dB to –70 dB 1 dB (–20 dB to –60 dB) A–2 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 184: Table A-7: Chrominance Non-Linearity

    Table A–11: Frequency Response and Group Delay Measurement Range Absolute Mode Accuracy Relative Mode Accuracy Frequency Response 40 dB 1.0 dB 0.3 dB Group Delay 1.0 s 20 ns 5 ns A–3 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 185: Table A-12: Horizontal Blanking

    0 to 90 quadrature output of the demodulator on Channel C) Table A–15: Jitter Measurement Range Absolute Mode Accuracy Jitter (2 Field) 20 s 10 ns Jitter Long Time 20 s 10 ns A–4 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 186: Table A-16: K-Factor

    1.0 dB (–60 dB to –70 dB) Weighted Signal-to-Noise Ratio –20 dB to –80 dB 1.0 dB (–20 dB to –60 dB) (5 MHz Low Pass and Unified Weighting) 2.0 dB (–60 dB to –70 dB) A–5 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 187: Table A-22: Sch Phase

    Sin X/X Table A–26: Vertical Blanking Measurement Range Absolute Mode Accuracy Equalizing Pulse Width 80 ns to 1 s 10 ns Serration Pulse Width 80 ns to 1 s 10 ns A–6 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 188: Table A-27: Rs-170A Horizontal Blanking Interval Timing

    1 s to 8 s 10 ns Horizontal Blanking Sync to Setup 5 s to 18 s 20 ns Horizontal Blanking Sync to End of Burst 6 s to 15 s 20 ns Horizontal Blanking A–7 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 189: Table A-30: Fcc Vertical Blanking Interval Timing

    50% of Bar when Zero for Bar and 0.3 IRE for no Carrier is not used and 0 to 50 Zero Carrier and no Bar) IRE when Zero Carrier and Bar are not used) A–8 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 190: Table A-32: Frequency Response Measurements

    0.5% SD NTC–7 Distortion (IEEE 511) Composite Chrominance Nonlinear Gain Distortion 5 IRE to 35 IRE 0.4 IRE NTC–7 (20 IRE chroma) Combination 45 IRE to 160 IRE (80 IRE chroma) A–9 VM700T Video Measurement Set Option 01 NTSC Measurements...

  • Page 191: Table A-37: Virs Measurements

    26 dB to 60 dB 1.0 dB Quiet Line 61 dB to 70 dB 2.0 dB Periodic SNR 26 dB to 60 dB 1.0 dB Quiet Line 61 dB to 70 dB 2.0 dB A–10 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 192 Index...
  • Page 194 Average Picture Level (APL), 3–2 Breezeway Width, 3–5 Burst Amplitude, 3–4 Burst Frequency Main menu Back Porch softkey, 2–128, 2–130 Bar Amplitude, 3–3 Bar Left softkey, 2–124 Reference submenu Bar LineTime Acquire submenu Index–1 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 195 Relative to Reference submenu, Use (1) Reference/ Use (2) Reference, 2–38 Special Position submenu Reference submenu Relative to Reference submenu chrominance–luminance intermodulation, 3–16 ChromLum GainDelay Acquire submenu Special Position submenu Main menu Index–2 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 196 Use (2) Reference, 2–48 FS–170A, Sync Setup, 3–6 Special Position submenu Fsc. Trap Filter softkey, 2–112 Full Field softkey, 2–116 Full Field Submenu, Rescale, 2–117 Full VITS Waveform softkey, 2–132 Differential Gain, 3–14 Index–3 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 197 System I, 2–55 Tracking Lines, 2–68 Graticule Track, 2–77 Graticule Track softkey, 2–122 ICPM GroupDelay SinX_X Clamp Couple submenu Acquire submenu, Special Position, 2–56 Cursor submenu Clamp/Sync Couple submenu Graticule submenu Index–4 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 198 Freq. Lock, 2–73 Jitter Waveform, 2–73 Rescale, 2–73 Spectrum Display, 2–73 Jitter Long_Time Long_Time, Main menu, Average Num, 2–73 Jitter measurement, 2–69 Limit File, 2–55 Jitter Waveform softkey, 2–73 Line Frequency, Main menu Index–5 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 199 Measure Position softkey, 2–86 Measure softkey, 2–66 Measure Submenu Max % Car, 2–68 Color Bar Acquire, 2–43 Min % Car, 2–68 DGDP Selected % Car, 2–68 Threshold, 2–68 Transient Chk Quad, 2–68 measurements Index–6 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 200 Relative to Reference submenu, Use (1) Reference/ Use (2) Reference, 2–104 Special Position submenu MultiBurstAcquire, 2–104 Noise Spectrum Multiburst Flag, 3–15 Noise SpectrumAcquire, 2–110 Packet, 3–15 SCH_Phase ShortTime Noise Spectrum Acquire submenu Index–7 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 201 2–48, 2–54, 2–60, 2–62, 2–67, 2–70, 2–73, 2–76, Pulse Pos softkey, 2–23 2–87, 2–89, 2–103, 2–117, 2–121, 2–128, 2–136 Pulse–to–Bar Ratip, 3–9 Right, 2–76 RS–170A Burst Width, 3–6 Front Porch, 3–6 H Blanking, 3–5 Ref Freq. softkey, 2–55 Index–8 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 202 DC Coupling, 2–67, 2–130 DelayGrat Inverse, 2–55 Special Position submenu Display, 2–127 Display Limits, 2–84 Double Pulse Mode, 2–56, 2–80 Dual SCH Display, 2–116 Show (1) Reference/Show (2) Reference soft key, 2–6 Index–9 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 203 Signal ID, 2–132 Measure Position, 2–86 Special Graticule, 2–121 Min, 2–88 Special Position, 2–6, 2–22, 2–33, 2–38, 2–43, 2–49, Min % Car, 2–68 2–56, 2–79, 2–99, 2–104, 2–122, 2–128 Normal, 2–111 Index–10 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 204 Flag Start Default, 2–105 Tilt Nullsoftkey, 2–112 Flag Width, 2–34 Tracking Lines, 2–68 Flag Width Default, 2–105 Transient Chk Quad softkey, 2–68 Fsc. Trap Filter, 2–112 Two Field High Pass 100 kHz, 2–112 Index–11 VM700T Video Measurement Set Option 01 NTSC Measurements...
  • Page 205 Upper Region 1, 2–78 Upper Region/Lower Region Submenu, Variable AE, Zero Carrier Pulse, 2–63 2–78, 2–79 Zero Carrier pulse, 3–2 Use (1) Reference/Use (2) Reference soft key, 2–6 Zero Set softkey, 2–18 Index–12 VM700T Video Measurement Set Option 01 NTSC Measurements...

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