Agilent Technologies 8485D Servisní příručka stáhnout pdf (Strana 69)

EPM Series Power Meter (E4418B) Modification

Appendix A 59

Step 8. Securely fit the three BNC connectors into the three holes in the rear panel, as

shown in Figure A-8. Use the 25 lb/in torque wrench to tighten the nuts.

Figure A-8

Step 9. The Measurement PCB (A6) must now be modified. The call outs in Figure A-9

show where the three wires need to be soldered. Solder a wire into each hole (Chop,

Low Gain, and High Gain Outputs). Take care not to over heat the PCB, as this may

damage the trace.

Figure A-9

Chop Output

High Gain Output

Low Gain Output

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 85 86

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Agilent Technologies 8485D Servisní příručka Strana 69