Testing Performance

To test the threshold accuracy

Test the TTL threshold

1Press the Format key. Select the field to the right of Pod 1, then select TTL in the pop-up menu.

2On the function generator front panel, enter 1.647 V ±1 mV DC offset. Use the multimeter to verify the voltage.

The activity indicators for pod 1 should show all data channels and the J-clock channel at a logic high.

3Using the Modify down arrow on the function generator, decrease offset voltage in 1-mV increments until all activity indicators for pod 1 show the channels at a logic low. Record the function generator voltage in the performance test record.

3–10

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Agilent Technologies 01664-97005 manual Test the TTL threshold