Table Of Contents - HP 654A Operating And Service Manual

Table of Contents
Model 654A
LIST OF TABLES
Number
Page
Number Page
]-1. Specifications ...... .. . . . . . . . . . . . .
1-2
5-2. Frequency Accuracy Check. . . . . . . . . . . . . . 5-3
1-2 . General Information ........ . 1-2
5-3. Thermal Converters for Level Flatness Checks ... 5-5
3-1. dBm/Voltage Conversion Chart ..... .
3·1
54. Frequency Adjustments. . . . . . .. . .......5-13
5-1. Required Test Equipment .. . .... . 5·2
5-5. Front Panel Troubleshooting . . . _ . . . . . . . . . .5-21
6-1. Replaceable Parts . . . . . . . . . . . . ... 6-2 thru 6-12
LIST OF ILLUSTRATIONS
Number
Page Number Page
I-I. Model 654A Test Oscillator.
1-2
5-11. Hum and Noise Check
..5-1 I
2-1.
3-1.
Power Cords . .
Location of Con trois, Indicators
and Connectors
2-1
3-2
5-12 Logarithmic Additon of
Harmonic Components ..5-1
I
4-1. RC Network Characteristics ..... .
4-1 5-13. 10MHz Low Pass Filter . . . ..5-11
4-2. Regulated Power Supply Output 5-\4. Lo ca tion of Internal Adjustments. . ..5-12
Voltage vs Current
4-5 5·15. Frequency Calibration Tes t Setup.. .5-14
4·) . Simplified Scllematic of Current 5-16. Meter Tracklllg Adjustment. . . . .5·17
Limiting Circuitry.
4-5
5-17. Alignment Access Covers for
5-1. Amplitude Accuracy Checks - UNBAL 5-3 Models 65 I B, 2A, 3A, 4A. . ..5-25
5·2. Amplitude Accuracy Checks - BAL.
54
5-
j
8.
Troubleshoot ing Tree. . . .
5
-27/5-28
5-3. Level Fla1ness Checks. 54 6-1. Frequency Tuning Me chanism. 6-9
54. Refere nce Supply. . . . .. .. . 5·5 6-2. Chassis Mechanical Parts. . .. . ..... . . ...6-10
5-5. Meter Tracking Accuracy Check ..
5·6
7 -I. Block Diagram . . 7-3
5-6 . Attenua'tor Accuracy Checks ... 5·7 7-2. Oscillator and Buffer Ampl ifier .... . 7-5
5-7 . Impedance Converter ..
5·8
7-3. Balan ced Amplifier, Meter and
5-8. Balance Checks.
5-9
Leveling . .. 7-7/7-8
5-9. Balance Box .. 5·9 74. Attenuato rs and Impedan ce Selector ... . .. 7-9/7-10
5·]0. Distortion Check . . . . . . . . . . .
.5-10 7-5. Power Supplies, AI .....7-11
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