Using The Digital Probes To Probe A Circuit - HP 54645A User's And Service Manual

Using the digital probes to probe a circuit

1 If you feel it's necessary, turn off the power
supply to the circuit under test.
2 Connect the digital probe cable to HP 54645D.
The digital probe cable is indexed so you can
connect it only one way. You do not need to
power-off the HP 54645A/D.
4 Connect the grabber to a node in the circuit you
want to test.
Using the digital probes to probe a circuit
Turning off power to the circuit under test
would only prevent damage that might occur
if you accidentally short two lines together
while connecting probes. You can leave the
HP 54645A/D powered on because no
voltage appears at the probes.
3 Connect a grabber to one of the probe leads. Be
sure to connect the ground lead. (Other probe
leads are omitted from the figure for clarity.)
5 For high-speed signals, connect a ground lead to
the probe lead, connect a grabber to the ground
lead, and attach the grabber to ground in the
circuit under test.
Getting Started
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