Vanguard Auto-Ohm - Manual (Page 15)

Auto-Ohm Operating Procedures
11
Figure 16. Attach Short Bar Prompt
b. Attach the test leads on an unused bus
bar (several inches apart, the spacing is not
critical, since this is a functional check).
Press the control knob to start test.
c. This display shows the current ramping
status. When test current ramps to 100 %,
this display is automatically replaced by the
following test-result display.
Figure 17. Current-Ramp Circuit Pass
Message
d. The above status display indicates the
current ramped properly; if so, go to the step
f. If the current did not ramp properly (test
failed) the display below appears; if so, go
to the next step.
Figure 18. Cur Ramp Error Message
e. If message shown above displays, press
the control knob to abort the test (restart the
Cal Check when the problem is corrected).
Figure 19. Zero Circuit Test Message
f. The Auto-Ohm checks the “ZERO”
circuit. The “PASS” message displays as
shown above.
Figure 20. Full-Scale Circuit Test
Message
g. The “MEASURE CIRCUIT” is tested
next. The “PASS” message displays is
shown below:
Figure 21. Measure Circuit Test Message
h. The Auto-Ohm calibration complete
message appears as shown on the following
display:
Figure 22. Cal Check Complete Message
This completes the Calibration Check
procedure. Press the control knob to return
to the Main Menu.
6.1.6 Display Previous Results
The purpose of this procedure is to let an
operator view the last 3 reading stored in the
Auto-Ohm. This procedure begins at the
Main Menu, when PREVIOUS RESULTS
is selected (Figure 23).
Figure 23. Previous Results Menu
ATTACH SHORT BAR
CURRENT RAMP CIRCUIT
“PASS”
CUR RAMP ERROR!
CHECK CABLES
MEASURE CIRCUIT CHCK
“PASS”
CAL CHECK DONE!
PRESS KEY……....
ZERO CIRCUIT CHECK
“PASS”
FSCL CIRCUIT CHECK
“PASS”
MAIN MENU