Chapter 6 Backdating
The Agilent 53131A Calibration Procedures
Assembly-Level Service Guide 6-11
6
CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued)
To Calibrate the Gain for Channels 1 and 2
1 Press any one of the arrow keys until CAL: GAIN 1 ? is displayed.
2 Press Enter key.
A scrolling message is displayed. Follow the instruction by performing the following
steps.
3 Connect a BNC tee connector to Channel 1 of the Counter.
4 Connect the Counter, dc power supply, and multimeter as shown in Figure 2-1.
Figure 2-1. Gain Calibration Setup
5 Adjust the power supply until the multimeter displays + 5.000 V ± 0.001 V.
6 Disconnect the digital multimeter from the Counter to prevent noise from being
introduced into the measurement.
7 Press Enter key.
The Counter momentarily displays CALIBRATING, and then it should display GAIN
1 PASS.
If the fail message is displayed, refer to the troubleshooting section in this chapter.
+
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DC Power Supply
HP 53131A
Counter Digital Multimeter
BNC Tee
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