microHAM SMORF Manual page 27

TRIGGER
2.
Sets trigger level. While trigger level is adjusted, its position is indicated by vertical line on the scope
screen and numerical value is shown at Δ position in the table located on the right side.
Δ sign is temporary changed to T sign. When trigger control is not selected, trigger level is still indicated
by small T sign on inner left side of Y axis.
Trigger's horizontal, X axis position is always zero (0) but actual zero position on the screen (Horizontal
Time Offset) can be adjusted by the horizontal control. Additional trigger settings are available in the
SCREEN MENU (polarity, source).
HORIZONTAL
3.
Sets scope time base, horizontal (X axis) scale and offset.
Turning knob changes Horizontal Time Offset, moves the zero time position (trigger) across the screen.
Maximal left position is set by range and sampling memory, maximal right position is the right end of
screen. When knob is pushed and turned, it changes Horizontal Time Scale. Horizontal scale units are
shown in next field and are set automatically according to actual range. Contrary to regular oscilloscopes,
SMΩRF provides labeled scale division.
VERTICAL
4.
Sets scope vertical (Y axis) scale and offset.
Turning knob changes Vertical Amplitude Offset. When knob is pushed and turned, it changes Vertical
Amplitude Scale. Again, scale is fully labeled. Units of Y vertical scale can be changed in next right field.
Volts [V] are referenced to the characteristic impedance, and Watts [W] or decibels [dBm] are related to
the Forward power at the TX feed point.
CURSORS MODE
5.
SMΩRF provides two cursors (CURSOR 1 and CURSOR 2) for measurements on captured waveform.
They can work in two modes: Tracking and Free mode.
In Tacking mode indicated by CT icon, Y position of the cursor is stuck to the waveform while X position
can be adjusted. In Free mode indicated by CF icon, both X and Y positions of the cursor can be
adjusted. On screen, cursors are indicated by a small square labeled 1 or 2.
CURSORS
6.
Cursors can be controlled by placing selection to cursor 1 or 2 field. Their position in amplitude and time
is numerically presented in table on the right side of display. Bottom line of the table with Δ sign shows
difference between CURSOR 1 and CURSOR 2 for both amplitude and time.
Cursors have slightly different control according to their mode. In Tracking mode turning the knob on
selected cursor changes its horizontal time position. When pushed and turned, the other cursor changes
its time position. It simplifies manipulation with both cursors.
In Free mode both cursors must be controlled separately. Turning the knob on selected cursor changes
its horizontal time position, when pushed and turned it changes its vertical position.
TONE
7.
TONE field is a shortcut to built-in Tone Generator START/STOP function. When icon is lit, Tone
Generator generates defined output. Its output is defined in MAIN MENU | TONE GENERATOR and
settings are unique for the Oscilloscope screen because Tone Generator is a part of SCREEN settings.
Just repeating what has already been said :-)
Oscilloscope screen has two special SCREEN MENU items.
ACQUISITION TYPE defines how sampled signal is shown on display when more than one sample per
1.
display point is available (depends on the time base).
MAXIMUM
•
Uses peak value from samples captured for one display point. This choice should be used when you
want to capture short pulses or you do not want to miss a peak in lower horizontal ranges.
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