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85330A Multiple Channel Controller 2-17
Performance Verification
AUX 1 and AUX 2
AUX 1 and AUX 2
Pulse Test You can output one or more 500 µs pulses from AUX 1 or AUX 2 and
measure them with an oscilloscope. The number of pulses is selectable. The
pulses have a 50% duty cycle, and thus a total period of 1 ms. The amplitude
of the signal is roughly 0 to 4 volts. The pulses are not perfect square waves.
The leading edge rises higher than 4 volts, then curves down to
approximately 4 volts.
Measuring Pulses from
AUX 1 or AUX 2
1. Connect an oscilloscope to the AUX 1 or AUX.
2. Set the scope as necessary to view the waveform described above.
3. Press:
[Select Instr] {85330A} {→} {TEST} {→} {AUX 1} or {AUX 2}
4. The message TEST AUXn OUTPUT: # OF TESTS will appear.
5. Use the keyboard to enter the desired number of pulses. You can enter
the number in units or in scientific notation: For example:
100, or
1E2
6. Press the [Return] key. The pulses will appear on the scope.
NOTE The 85330A will not perform any other functions during this test. If you
enter a large number, such as 1E6, it will take a while to finish. You can
abort the test by cycling line power.
NOTE To test AUX 2, use the same basic procedure as shown above.