Agilent Technologies 8133A Instrukcja Obsługi Pobierz pdf (Strona 64)

64 16800 Series Portable Logic Analyzers Service Guide

3 Testing Performance

Test Pod 2 in 500 Mb/s Mode

The logic analyzer master card’s Pod 1 clock (“Clk1” in the

Sampling setup dialog) is used for testing all Pods above 1 in

the 500 Mb/s mode. Therefore, two E5383A Flying Lead

Probe Sets are required to test Pod 2 and the remaining

pods.

Set up the second E5383A Flying Lead Probe Set

1 Disconnect the first E5383A Flying Lead Probe Set from

the pod it is currently connected to (Pod 1) and connect

it to the pod under test (Pod 2).

2 Remove the pod under test Flying Lead Probe Set’s CLK

lead from the SMA/Flying Lead test connectors. (Do not

remove the channel 2, 6, 10, and 14 leads from the

SMA/Flying Lead test connectors.)

3 Connect a second E5383A Flying Lead Probe Set to Pod 1

of the logic analyzer’s master card.

4 Connect the Pod 1 Flying Lead Probe Set’s CLK lead to

the SMA/Flying Lead test connector’s pin strip connector

at the 8133A pulse generator’s Channel 1 OUTPUT.

Test Pod 2 in 500 Mb/s mode

1 On the 8133A pulse generator, in the PULSE setup for

CHANNEL 2, press the COMP button to return the

outputs to normal.

2 Note that the signal on the oscilloscope has moved.

Change the oscilloscope’s horizontal position to 525 ps (or

as required) to center the measured pulse on the

oscilloscope display.

3 Verify the DC offset and adjust it if necessary. See

page 41.

4 Deskew the oscilloscope if necessary. See page 42.

5 Readjust the pulse width from the pulse generator as

measured on the oscilloscope. See page 43.

6 Unassign all Pod 1 bits.

7 Assign bits 2, 6, 10, and 14 of Pod 2.

8 Ensure that the Pod 2 threshold is set to 1 volt (just as

you did for Pod 1 on page 46).

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Agilent Technologies 8133A Instrukcja Obsługi Strona 64