Tektronix DM 5010, Instruction Manual

Page: 220 / 347

Performance Check— DM 5010
b. CHECK—that the DM5010 display reads between
-0 and -0.5 Ω.
c. Remove the short between the power module connec­
tions to the DM 5010 rear-interface input connector pins.
8. Rear Interface Accuracy Checks
To verify
the accuracy of the DCV, ACV, ACV+DCV,
and OHMS modes via the DM 5010 rear interface, follow
the steps outlined in the performance check for the front­
panel input connectors, but apply the voltages and resis­
tances to the DM 5010 rear interface pins pins 28B (Hi) and
28A (Lo) on the ADC board (A17) via the power module
connections.
S CAUTION <
Do not exceed the maximum input voltages specified
for rear interface input
When rear-interface accuracy checks have been com­
pleted, remove all connections to the DM 5010.
9. GPIB Communication Check
a. Refer to the talker-listener programs in the Program­
ming section of this manual. Using one of these programs,
send
commands to the DM5010 and observe the front­
panel changes. Send SET? and note the data returned to
the controller.
NOTE
The output cable fixture from the calibrating sources
to the rear interface pins may require modification to
accommodate accuracy checks via the DM 5010 rear
interface.
b. CHECK—that the DM 5010 front panel correctly dis­
plays setting changes as sent and returns the correct set­
ting information when queried.
c. Remove all connections.
Press the DM 5010 REAR INPUT button to select rear
interface input. This completes the performance check for the DM 5010.
5-12 REV JAN 1983