SHIMPO 921A - Manual (Page 45)

C.5
TRICOR Systems Inc.
Resistance Type Acceptable Range
4
5, 10 mA Channel Offset
0.010 to 0.030
4
5, 25 mA Channel Offset
0.004 to 0.012
16 k
5, .25 mA Channel Offset
0.001 to 0.030
1 k
5, 1 mA Channel Offset
0.001 to 0.030
4 V, 4.99 k Pullup Channel Offset 0.001 to 0.030
Step 7 Press the TEST/READY switch once. The unit displays the
GAIN Calibration Resistance Value message. Press the TEST/
READY switch again. The unit displays the GAIN Calibration
Value (GV). The Gain Values displayed should be in the range
3.800 ± .100. These are not adjustable values. Consult the
factory if the GV value is not within this range.
Step 8 Press the TEST/READY switch once. The unit displays the
Contact Resistance Value Mode message. Press the TEST/
READY switch again. The unit displays the measured
resistance for the resistance channel. The value displayed
must be 4.095. This is the open circuit condition. Consult the
factory if the channel is not equal to this value.
Step 9 Remove the Offset/Gain jumpering connector from the
Resistance Cable P2 connector. Connect the Resistance Test
Box (Part of PN 921-811-XX) connector to the Resistance Cable
P2 Connector.
Tables C.2 through C.5 provide the switch settings and
verification criteria for the different Resistance Option types.
Use the appropriate table for the Resistance Option installed in
the 921A.
Set the Resistance Test Box Resistance switch to each position
listed in the appropriate table below and verify that the value
displayed by the unit (CH1) equals the corresponding value
listed in the table within the tolerance specified.