Agilent Technologies Ininiium 90000 Specifikace stáhnout pdf (Strana 87)

Chapter 4: Troubleshooting

To check probe power outputs

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

Any failure may be a problem with the probe power and control assembly, the AutoProbe flex

cable, the probe power and control cable, or the power board.

Use the table and figure to the right

to check the power output at the

connectors.

The +12 V and –12 V supplies

come from ripple regulator on

the power board, and the +3 V

and –3 V supplies are

developed in three-terminal

regulators on the probe power

and 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

3Offset

4Data

5 &

ring

Probe ID

6Clk

8–12 V

9+12 V

1 2 ... 82 83 84 85 86 87 88 89 90 91 92 ... 147 148

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Agilent Technologies Ininiium 90000 Specifikace Strana 87