Contents

1. General Information

Serial Numbers and Repair Information . . . . . . . . . . . . . . . . .

Instrument Variations

HP 85629B

Test and Adjustment Module

Service Kit

Electrostatic

Discharge

Reducing

Potential for ESD Damage

Static-Safe

Accessories

Returning Instruments for Service

Service

Tag

Original

Packaging

0 t her Packaging

Recommended Test Equipment

Sales and

Service Offices

2. Adjustment

Procedures

.Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . .

Which Adjustments Should Be Performed? . . . . . . . . . . . . . . .

Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustable and Factory-Selected Components . . . . . . . . . . . . . .

Adjustment Tools . . . . . . . . . . . . . . . . . . . . . . . . . .

Instrument Service Position . . . . . . . . . . . . . . . . . . . . .

Using the TAM . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustment Indicator . . . . . . . . . . . . . . . . . . . . . . . .

Front End Cal (adjustment) . . . . . . . . . . . . . . . . . . . . . .

1.High Voltage Power Supply Adjustment . . . . . . . . . . . . . . .

2.Display Adjustment . . . . . . . . . . . . . . . . . . . . . . .

3.IF Bandpass Adjustment . . . . . . . . . . . . . . . . . . . . .

4.IF Amplitude Adjustments . . . . . . . . . . . . . . . . . . . .

5.DC Log Amplifier Adjustments . . . . . . . . . . . . . . . . . .

6.Sampling Oscillator Adjustment . . . . . . . . . . . . . . . . . .

7.YTO Adjustment . . . . . . . . . . . . . . . . . . . . . . . .

8.LO Distribution Amplifier Adjustment . . . . . . . . . . . . . . .

9.Frequency Response Adjustment . . . . . . . . . . . . . . . . . .

10.Calibrator Amplitude Adjustment . . . . . . . . . . . . . . . . .

11.10 MHz Reference Adjustment-OCXO (Non-Option 103) . . . . . .

12.10 MHz Reference Adjustment-TCXO (Option 103) . . . . . . . .

13.Demodulator Adjustment . . . . . . . . . . . . . . . . . . . . .

14.External Mixer Bias Adjustment (Non-Option 327) . . . . . . . . .

15.External Mixer Amplitude Adjustment (Non-Option 327) . . . . . .

l - l l-2 l-3 l-4 l-4 l-5 l-6 l-6 l-6 l-6 l-7 l-9

1-16

2-l

2-2

2-2

2-2

2-2

2-3

2-3

2-9

2-9

2-9

2-12

2-13

2-15

2-21

2-26

2-30

2-34

2-37

2-40

2-43

2-47

2-48

2-51

2-53

2-56

2-57

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Agilent Technologies 856290216 service manual Contents