Agilent Technologies 45A, 46A, 54835A manual To check probe power outputs

Chapter 5: Troubleshooting

To check probe power outputs

To check probe power outputs

Probe power outputs are on the front panel, surrounding each BNC input.

Use the table and figure to the right to check the power output at the connectors.

The +12 V and –12 V supplies come directly from the power supply, and the +3 V and –3 V supplies are developed in three-terminal regulators on the probe power & control assembly.

Measure the voltages with respect to the ground terminal on the front panel, located near the Aux Out BNC.

Do not attempt to measure voltages at pins 3 through 7.

Pin	Supply
1	+3V
2	–3V
3	Offset
4	Data
5 &	Probe ID
ring
6	Clk
7	Rp
8	–12 V
9	+12 V

Any failure may be a problem with the probe power and control assembly, the AutoProbe flex cable W13, or the probe power and control cable W12.

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