Y Operation 1 - Kenwood CS-5170 Instruction Manual

A S w e e p
Fig. 13
B S w e e p
Fig. 14 Magnified view of intensified zone above
Note that for this type of operation both the D E L A Y T I M E
POSITION and T R I G L E V E L affect the start of the B s w e e p
so that the delay time is used as a reference point. (Fig. 1 5)
A S w e e p
B S w e e p
Fig. 15
Magnified view of intensified.
Intensified zone to be magnified.
14) X - Y O P E R A T I O N
For some measurements, an external horizontal deflection
signal is required. This is also referred to a s an X - Y meas-
urement, where the Y input provides vertical deflection and
X input provides horizontal deflection.
X - Y operation permits the oscilloscope to perform many
types of measurements not possible w i t h conventional
s w e e p operation. The C R T display becomes an electronic
graph of t w o instantaneous voltages. T h e display may be
a direct comparison of t w o voltages s u c h a s during phase
measurement, or frequency measurement with Lissajous
w a v e f o r m s .
To use an external horizontal input, use the following pro-
cedure;
1. Set the HORIZ MODE s w i t c h to X - Y the position.
2. Use the channel 1 probe for the vertical input and the
channel 2 probe for the horizontal input.
3 . Adjust the amount of horizontal deflection with the C H 2
V O L T S / D I V and V A R I A B L E controls.
4 . The C H 2 (vertical) POSITION (§) control now serves as
the horizontal position control, and the •< •
@) control is disabled.
5. All sync controls are disconnected and have no effect.
(5) V I D E O S I G N A L O B S E R V A T I O N
T h e T V F R A M E / L I N E s w i t c h permits selection of vertical or
horizontal s y n c pulse for s w e e p triggering w h e n viewing
composite video w a v e f o r m s . In the LINE position, horizon-
tal sync pulses are selected a s triggers to permit viewing
of horizontal line of video. In the F R A M E position, vertical
sync pulses are selected as triggers to permit viewing of ver-
tical fields and frames of video. W h e n observing the video
waveforms, stable display is obtained on the screen regard-
less the T R I G L E V E L (§) control if the T R I G MODE (§) s w i t c h
to F I X .
A t most points of measurement, a composite video signal
is of the ( - ) polarity, that i s , the s y n c pulses are negative
and the video is positive. In this c a s e , use " - " S L O P E .
If the waveform is taken at a circuit point w h e r e the video
waveform is inverted, the s y n c pulses are positive and the
video is negative. In this c a s e , use " + " S L O P E .
POSITION
1 9