Agilent Technologies 54502A Manuel de service télécharger pdf (Page 36)

Performance Tests

Introduction These procedures test the electrical performance of the logic analyzer by using the

specifications in table 1-1 as the performance standards. All tests may be

performed without access to the interior of the instrument.

Recommended

Test Equipment

Equipment required for the performance tests in this section is listed in the

Recommended Test Equipment table in Section 1. Any equipment that satisfies

the critical specification listed in the table may be substituted for the

recommended model.

Test Connector The performance tests and adjustments require connecting pulse generator

outputs to probe pod inputs. Figure 3-1 is a test connector that may be built to

allow testing of multiple channels (up to eight at one time). The test connector

consists of a BNC connector and a length of wire. Connecting more than eight

channels to the test connector at a time will induce loading of the circuit and true

signal representation will degrade. Test results may not be accurate if more than

eight channels are connected to the test connector.

The Hewlett-Packard part number for the BNC connector in figure below is

1250-1032. An equivalent part may be used in place of the Hewlett-Packard part.

Test Record The results of the performance tests may be tabulated on the Test Record

provided at the end of this section. The Test Record lists the performance tests

and provides an area to mark whether the pod passed or failed the test. The

results recorded in the table at incoming inspection may be used for later

comparisons of the tests during periodic maintenance, troubleshooting, and after

repairs or adjustments.

Figure 3-1. Test Connector

HP 1650B/1651B Performance Tests

Service Manual 3-1

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Agilent Technologies 54502A Manuel de service Page 36