TAS 200 Series Adjustment Procedures
Handheld and Benchtop Instruments Basic Service
37
HORIZONTAL SEC/DIV 1 ms
SWEEP UNCAL Out
2. Connect the time mark generator to the CH 1 input with a 50 W coaxial cable
and 50 W termination.
3. Set up the generator to produce a 1 ms output.
4. Adjust the generator output to produce a waveform two divisions in
amplitude on the display.
5. Adjust VR405 for a one marker per division display over the center eight
divisions. See Figure 8 for the adjustment location.
Use the following procedure to adjust the 1 ms and .1 ms timing.
1. Set up the oscilloscope as follows:
VERTICAL MODE CH1
CH 1 VERTICAL POSITION Midrange
HORIZONTAL SEC/DIV 1 ms
HORIZONTAL SWP UNCAL Out
2. Connect the time mark generator to the CH 1 input with a 50 W coaxial cable
and 50 W termination.
3. Set up the generator to produce a 1 ms output.
4. Adjust the generator output to produce a waveform one division in amplitude
on the display.
5. Adjust VR404 for a one marker per division display. See Figure 8 for the
adjustment location.
6. Set the generator to produce a .1 ms output.
7. Set the HORIZONTAL SEC/DIV control to .1 ms.
8. Adjust VR802 for a one marker per division display. See Figure 8 for the
adjustment location.
Use the following procedure to adjust the X-gain accuracy.
1. Set up the oscilloscope as follows:
VERTICAL MODE X-Y
CH 1 VOLTS/DIV 10 mV
CH 1 VARIABLE CAL
HORIZONTAL X-Y In
1 ms and .1 ms Timing
X-Gain Accuracy
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