Marathon Computer UNIPRO V3.5 - Manual (Page 175)

MMI Product Documentation
Unipro 3.5 Process Control 1 Aug. 1997
Press the [Display] key to change the SET
window to Z-B or Z-C and repeat steps 4 and 5
for inputs B and C.
After all the values are stored, press the [Display]
key to return the SET window to Z-A and press
the [Enter] key to change it to S-A (span).
Span
Put the meter leads into the banana plug to
measure mV (300----).
Remove the jumper block from the simulator.
Using a meter to check your input voltage on the
O2 side, enter 1.4 or 1.5 mV from the simulator,
and turn ON the simulator.
Set the span values at 1400 or 1500 (depending
on what the simulator generated) using the
arrow keys to adjust the values.
Press the [Enter] key twice to save the values and
press the [Display] key to change the input type.
Repeat steps 1-5 for each input (A, B, and C),
pressing [Enter] twice to save the values each
time. Wait 5 to 10 seconds to allow the readings
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).