Agilent Technologies Agilent 34980A, Service Manual

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74 34980A Service Guide
3
Calibration Procedures
Analog Output Adjustment
Install the 34952A module in the mainframe and allow a

1 hour warm-up before performing these procedures.
This adjustment procedure sets a zero adjustment and a gain adjustment constant for
each DAC output. You must perform all the adjustments on one analog output channel
before adjusting the other analog output channel.
1
Install the module(s) in the instrument.
2
Unsecure the instrument for calibration (see page 49 ).
3
Connect channel 6 DAC output to the DMM input. Set the DMM to measure DC
volts.
4
The calibration procedure makes two adjustments per channel.

After sending the first command, measure the module output. Send the measured
value to the module and advance to the next point.

This procedure is summarized as follows:
a
Send the following command to begin the procedure.

CALibration:BEGin:VOLTage 1,(@<channel>
)
b
Measure the module output.
c
Send the measured value to the module with the following command:

CALibration:POINt? <value>
d
The command returns a “+1” to indicate it is ready for the next point.
e
Measure the module output.
f
Send the measured value to the module with the following command:

CALibration:POINt? <value>
g
The command returns a “+0” to indicate the calibration on the channel is
completed.
5
Repeat steps 3 and 4 for channel 7.
Output Voltage Quick Check Error from
Nominal (1 year)
10 V Q ± 45 mV
0 V Q ± 20 mV
-10 V ± 45 mV
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