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TV SIGNAL DISPLAYS
Displaying a TV Line-rate Signal
1. Perform the steps and set the controls as outlined
under Baseline Trace and Signal Display to obtain a basic
display of the desired TV signal.
2. Set A SEC/DIV to 10 Ms, and A & B INT to CH 1 or
CH 2 as appropriate for applied signal.
3. Set A TRIGGER SLOPE for a positive-going signal
(lever up) if the applied TV signal sync pulses are positive
going, or for a negative-going signal (lever down) if the TV
sync pulses are negative-going.
4. Adjust the A TRIGGER LEVER control for a stable
display, and AUTO INTENSITY for desired display bright
ness. If necessary, adjust VERTICAL VOLTS/DIV control to
obtain 5 divisions or greater amplitude for a stable display.
Operating Instructions— 2213 Service
Displaying a TV Field-rate Signal
1. Perform Step 1 under Displaying a TV Line-rate
Signal.
2. Set A SEC/DIV to 2 ms, A TRIGGER MODE to TV
FIELD and A & B INT to CH 1 or CH 2 as appropriate for
the applied signal.
3. Perform Step 3 and 4 under Displaying a TV Line-rate
Signal.
4. To display either Field 1 or Field 2 individually at faster
sweep rates (displays of less than one full field), set VERTI
CAL MODE to BOTH and ALT simultaneously. This syn
chronizes the Channel 1 display to one field and the
Channel 2 display to the other field.
To change the field that is displayed, interrupt the triggering
by repeatedly setting the AC GND DC switch to GND or dis
connecting the signal from the applied signal input until the
other field is displayed. To display both fields simultaneous
ly, apply the input signal to both the CH 1 and CH 2 inputs
via two probes, two cables, or through a dual-input coupler.
To examine either a TV Field-rate or Line-rate signal in more
detail, either the X I0 Magnifier or HORIZONTAL MODE
functions may be employed as described for other signals
elsewhere in this manual.
@ NOV 1981
2-11
Содержание 2213
Страница 1: ...Ttektronix 2213 OSCILLOSCOPE SERVICE IN S T R U C T IO N M A N U A L ...
Страница 9: ...2213 Service 3827 01 viii The 2213 Oscilloscope ...
Страница 30: ...Theory of Operation 2213 Service 3 3 Figure 3 1 Basic block diagram of the 2213 Oscilloscope ...
Страница 67: ...Adjustment Procedure 2213 Service 5 2 ...
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