Figure 3. Tektronix, Type 7D20 bottom view

Calibration Procedure For Digitizer Type 7D20 Page Navigation
6

TB 9-6625-2164-24

Figure 3. Tektronix, Type 7D20 bottom view - adjustment locations.

Figure 4. Tektronix, Type 7D20 left side view - adjustment locations.

ag. Set CH 1 VOLTS/DIV switch to 5 V. SIGNAL display should not be triggered

using the TRIGGER LEVEL control. If so, adjust HYSTERESIS R444 (fig. 3) for a stable

trigger at CH 1, 2 V VOLTS/DIV and no stable trigger at CH 1, 5 V VOLTS/DIV.

ah. Press TRIGGERING/COUPLING AC pushbutton.

ai. Set CH 1 VOLTS/DIV switch to 500 mV.

aj. Set TIME/DIV switch to 1 ms.

ak. Set function/arbitrary generator output frequency to 1 kHz and amplitude for 6

divisions on TI display.

al. Adjust TRIGGERING LEVEL control for a stable display at 1 kHz.

for T=0.0S.

am. Observe T=( ) on display and set CURSORS