HP 8560A Service Manual

A4 Assembly’s Cal Oscillator Circuit
..................
Cal Oscillator Unlock at Beginning of IF Adjust
............
Inadequate CAL OSC AMPTD Range
.................
300 Hz to 3 kHz Resolution Bandwidth Out of Specification
.......
Low-Pass Filter
...........................
Sweep Generator
..........................
AM/FM Demodulation, Audio Amplifier, and Speaker
..........
9. Controller Section
Troubleshooting Using the TAM
....................
Blank Display ...........................
Digital Signature Analysis (DSA)
...............
:
....
Display Problems
...........................
Line Generators
..........................
Blanking
..............................
Display Jumbled or Trace Off Screen
.................
Intensity ..............................
Bad Characters or Graticule
.....................
Long Lines Dimmer Than Short Lines
.................
Analog Zero-Span Problems
......................
Frequency-Count Marker Problems
...................
Frequency Counter
..........................
State- and Trace-Storage Problems
...................
Keyboard Problems
..........................
10. Synthesizer Section
Confirming a Faulty Synthesizer Section
.................
Troubleshooting Test Setup
......................
Troubleshooting Using the TAM
....................
General PLL Troubleshooting
.....................
PLL Locked at Wrong Frequency
...................
Unlocked PLL
...........................
Frequency Span Accuracy Problems
...................
Determining the First LO Span
....................
Confirming Span Problems
......................
YTO Main Coil Span Problems (LO Spans >20 MHz)
..........
YTO FM Coil Span Problems (LO Spans 1.01 MHz to 20 MHz)
.....
Roller Oscillator Span Problems (LO Spans 51 MHz)
..........
First LO Span Problems (All Spans)
.................
Unlocked YTO PLL
..........................
Operation
.............................
Troubleshooting an Unlocked YTO PLL
................
Unlocked Roller Oscillator PLL
.....................
Operation
.............................
Confirming an Unlocked Condition
..................
Offset Oscillator PLL
........................
Transfer Oscillator PLL
.......................
Main Oscillator PLL
........................
Unlocked Offset Lock Loop (Sampling Oscillator)
.............
Operation
.............................
Troubleshooting
..........................
8-34
8-35
8-35
8-36
8-40
8-40
8-40
9-l
9-2
9-4
9-4
9-4
9-5
9-7
9-10
9-10
9-11
9-12
9-13
9-14
9-15
9-16
10-2
10-7
10-8
10-13
10-13
10-13
10-15
10-15
lo-16
lo-16
10-17
lo-18
10-21
lo-23
lo-23
lo-25
lo-32
lo-32
lo-32
10-33
10-35
10-37
10-39
10-39
10-39
Contents-6

HP 8560A Specifications

General

Brand	HP
Model	8560A
Category	Measuring Instruments
Language	English