Agilent Technologies 54502A Manuale di Servizio Scaricare il pdf (Pagina 50)

9. Disconnect lower eight bits (bits 0 through 7) from test connector. Attach

upper eight bits (bits 8 through 15) to the test connector. Repeat steps 3, 4, 6,

7 and 8 until the upper bits of all pods have been tested (pods 1 through 5).

Clock,

Qualifier, and

Data Inputs

Test 4

Description: This test verifies the minimum swing voltages of the input probes and

the maximum clock rate of the HP 1650B\ 51B when it is in single phase mode.

Specification:

Minimum swing: 600 mV peak-to-peak.

HP 1650B Clock repetition rate: Single phase is 35 MH z maximum.

HP 1651B Clock repetition rate: Single phase is 25 MH z maximum.

Clock pulse width:

10 ns at threshold.

Equipment:

Pulse Generator ............................... HP 8161A/020

Oscilloscope ..................................... HP 54502A

50 Ohm Feedthru (2) .............................. HP 10100C

Test Connectors see figure 3-1..........................(2)

Procedure:

1. Connect the HP 1650B\ 51B and test equipment as in figure 3-18. In order to

most accurately measure the amplitude of the test signals from the pulse

generator, high impedance scope probes should be used to look at the signal

levels at the output of the pulse generator.

Note In this setup, only eight channels are tested at a time to minimize loading. Ground

lead must be connected to ensure accurate test results. It is recommended that all

eight channel grounds be connected.

Figure 3-18. Setup for Data Test 4

HP 1650B/1651B Performance Tests

Service Manual 3-15

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Agilent Technologies 54502A Manuale di Servizio Pagina 50