Agilent Technologies 6571A, Service Manual

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Verification 11
2
Verification
Introduction
This chapter provides test procedures for checking the operation of Agilent Series 667xA GPIB (system) and 657xA
programmable (bench) power supplies. The required test equipment is specified and sample performance test record sheets
are included. Instructions are given for performing the tests either from the front panel or from a controller over the GPIB
for system units.
Tests
Two types of procedures are provided: Operation Verification tests and Performance tests.
Type of Test Purpose
Operation Verification These tests do not check all parameters, but comprise a short procedure to verify that the power
supply is performing properly.
Performance These tests verify all the Specifications (not Supplementary Characteristics) listed in Table 1-1
of the Power Supply Operating Manual.
If you encounter failures or out-of-specification test results, see Troubleshooting Procedures (Chapter 3). The procedures
will determine if repair and/or calibration is required.
Note
The power supply must pass the selftest at power-on before the following tests can be performed. If the
power supply fails selftest, go to Chapter 3.
Test Equipment Required
List of Equipment
Table 2-1 lists the equipment required to perform the tests given in this chapter. Only the equipment marked with the
superscript "
1
’’ is needed for the Operation Verification test.
Current-Monitoring Resistor
The four-terminal, current-monitoring resistor listed in Table 2-1 is required to eliminate output current measurement error
caused by voltage drops in leads and connections. The specified load resistors have special current-monitoring terminals
inside the load connection terminals. Connect the AC or DC voltmeter directly to these current-monitoring terminals.