Agilent Technologies 6000 Series User Manual page 81

Service Guide
✔
Press the AutoScale key.
✔
Obtain service from Agilent Technologies, if necessary.
If the trace display is unusual or unexpected
✔
Check that the Horizontal time/division setting is correct for
the expected frequency range of the input signals.
✔
The sampling speed of the oscilloscope depends on the
time/division setting. It may be that when time/division is set
to slower speeds, the oscilloscope is sampling too slowly to
capture all of the transitions on the waveform. Use peak
detect mode.
✔
Check that all oscilloscope probes are connected to the
correct signals in the circuit under test.
✔
Ensure that the probe's ground lead is securely connected to
a ground point in the circuit under test. For high-speed
measurements, each probe's individual ground lead should
also be connected to a ground point closest to the signal
point in the circuit under test.
✔
Check that the trigger setup is correct.
✔
A correct trigger setup is the most important factor in
helping you capture the data you desire. See the User's Guide
for information about triggering.
✔
Check that infinite persistence in the Display menu is turned
off, then press the Clear Display softkey.
✔
Press the AutoScale key.
If you cannot see a channel
✔
Recall the default setup by pressing Save/Recall then Default
Setup. This will ensure that the trigger mode is Auto.
✔
Check that the oscilloscope probe's BNC connector is
securely attached to the oscilloscope's input connector.
✔
Check that the probe clips are securely connected to points
in the circuit under test.
Troubleshooting 4
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