Dvm Calibration - Agilent Technologies 53147A Assembly Level Service Manual

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Chapter 2 Service
Calibration Procedures

DVM Calibration

The DVM calibration procedure is semi-automatic in that it is accomplished
via software embedded in the Agilent 53147A/48A/49A. A computer and
an RS-232 serial cable are required to access the calibration software.
Equipment Required
A computer with an RS-232 serial interface and terminal software
Agilent 53150-60215 RS-232 Serial Cable
Agilent 6613C or 6614C Precision DC Power Supply
To ensure that the results are valid, the Agilent 53147A/48A/49A and
the Agilent 6613C/6614C Precision DC Power Supply should be powered
on for at least 30 minutes prior to beginning the calibration procedure.
This allows the internal temperatures of the equipment to stabilize.
Press the Display DVM key on the Agilent 53147A/48A/49A.
Connect the DVM test leads to the DVM + and – connectors on the Agilent
53147A/48A/49A (red to + and black to –).
Connect the test prods to the + and – output connectors on the Agilent
6613C/6614C Precision DC Power Supply.
Set the 6613C/6614C Precision DC Power Supply to output exactly
+ 50.0 V.
Connect the Agilent 53150-60215 RS-232 Serial Cable between the
computer's serial port (DB-25) and the Agilent 53147A/48A/49A's serial
port (RJ-45).
Start the terminal software on the computer.
Send "!acq 60" from the terminal program to the Agilent 53147A/48A/49A
(be sure to type lowercase letters when typing "!acq 60").
Press "5" on the computer to choose option 5 from the DMM Tests menu
(see Figure 2-8).
2-20 Assembly Level Service Guide