User Manual

Module Calibration
Chapter 7
73
Table 7.A
Write
Block T ransfer W ord 28
Word/Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Inhibit Calibration on Channel Requested Auto-Calibration
W ord 28
8 7 6 5 4 3 2 1
Set these bits to
0
Requested
clamp
inhibit
Requested
Save
Values
Requested
Gain Cal.
Requested
Of
fset Cal.
NOTE: Normally, all channels are calibrated simultaneously (bits 08–15
of word 28 are octal 0). To disable calibration on any channel, set the
corresponding bit 08 through 15 of word 28. To disable the clamp inhibit
function, set bit 06.
4. Queue block transfer reads (BTRs) to monitor for offset calibration
complete and any channels which may have not calibrated successfully.
Refer to Table 7.B.
Table 7.B
Read
Block T ransfer W ord 13
Word/Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Uncalibrated Channels Auto-Calibration Status
W ord 13
8 7 6 5 4 3 2 1
Cal.
Fault
EEPROM
Fault
Not used
Save to
EEPROM
Complete
Gain Cal.
Complete
Of fset Cal.
Complete
5. Proceed to Gain Calibration below.
Gain Calibration
Calibrating gain requires that you apply +100.000mV across each input channel.
Normally all inputs are calibrated together. To calibrate the gain of an input,
proceed as follows:
1. Apply +100.000mV across each input channel as shown in Figure 7.2.