Maintence and Troubleshooting
Unipro 3.5
Rev. 11.00
December 30, 1995
time. Wait 5 to 10 seconds to allow the reading
to record, then take it out of calibration mode by
throwing the switch.
Remove the banana plugs from the simulator
(remove the load from the line) and wait for the
instrument to "max out" at 3500.
Let the reading settle at maximum (another 5 to
10 seconds) then reinsert the banana plug into
the simulator to see if the instrument returns to a
steady 1500 at all inputs.
Vary the input millivoltage down and verify that
1500 reduces to 1000 at a steady level for each
input setting.
Check the reference voltage on TBD-5 and 6 (for
input B) and 8 and 9 (for input C). Should read
around +2 mV (between 1.8 and 2.2 is considered
good).
Slidewire Board Calibration
Zero
Turn off the power at the simulator.
Short the input by putting a banana plug
shorting block into the simulator. Short the
jumper ( switch) wired into 17 and 18 to
calibration mode.
This will produce some value in the PROCESS
window and Z-A in the SET window.
Use the left and right arrow keys to change the
adjustment from coarse to fine in the PROCESS
window, and the up and down arrow keys to
change the value. Adjust the PROCESS window
value to zero (0), or as close as possible.
Press the [Enter] key twice to store the value.