500-003111-000
5-12
h. Verify a DVM indication of +10.000 ±0.100 VDC.
i. Select a PGA gain of x100 by writing 0002 to the PGA Gain Selection
Register.
j. Adjust the current source output to +0.400 mA. Adjust R59 (x100 Adj)
for a DVM indication of +10.000 ±0.004 VDC.
k. Select a PGA gain of x1 by writing 0000 to the PGA Gain Select
Register.
l. Adjust the current source output to +40.00 mA. Adjust R59 for a DVM
indication of +10.000 ±0.006 VDC.
5.5.4
Manual ADC Calibration
a. Establish manual ADC calibration and the ±10 V range as follows:
JUMPER FUNCTION STATE
J3 5
V REMOVED
J4-1,
2
BIPOLAR INSTALLED
J5-1, 2
MANUAL GAIN
INSTALLED
J15-1, 2
20 V FSR
INSTALLED
J25
2.5 V REF
REMOVED
J26
10 V REF
INSTALLED
J40
5 V REF
REMOVED
J38-1, 2
MANUAL ZERO
INSTALLED
J6
UNIPOLAR REMOVED
b. Select a PGA gain of x1 by writing 0000 to the PGA gain selection
register. Select the SELF-TEST ZERO input and initiate A/D
conversions by writing 6040 HEX to the CSR at intervals of 0.1-1.0
second. Display the ADC register after each conversion.
c. Adjust R25 (BIPOLAR ADC ZERO ADJ) for an ADC indication which
varies between FFFF and 0000 HEX.
d. Select the Self-Test Reference Voltage input and initiate A/D
conversions by writing 6340 HEX to the CSR at intervals of 0.1-1.0
second. Display the ADC Register after each conversion.
e. Adjust R27 (T/H GAIN ADJ) for an ADC indication which varies
between 07F5 and 07F6 HEX.
5.5.5
Analog Outputs Calibration
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