Agilent Technologies 8564EC Service Manual page 323

IF Section
Introduction
Introduction
The IF section contains the A4 log amplifier/cal oscillator and the A5 IF
assemblies. Figure 9-2 on page 431
and A5 test connectors.
paths through the IF section.
Troubleshooting Using the Diagnostic Software ...........
Troubleshooting the Cal Oscillator on A4 ....................
Using Diagnostic Software
Troubleshooting A5 Using Diagnostic Software ..........
Automatic IF Adjustment ...............................................
Parameters Adjusted ....................................................
Requirements ................................................................
Performance Test Failures ..............................................
IF Gain Uncertainty Performance Test .......................
Scale Fidelity Performance Test ..................................
Resolution Bandwidths Performance Tests .................
Log Amplifier (P/O A4 Assembly) ...................................
Log Amplifier .................................................................
Linear Amplifiers ..........................................................
Video Offset ...................................................................
Video Output .................................................................
Frequency Counter Prescaler/Conditioner ..................
AM/FM Demodulator ....................................................
4.8 kHz IF Filters ..........................................................
10.7 MHz IF Filters .......................................................
4.8 kHz and 10.7 MHz IF Filters .................................
10.6952 MHz VCXO ......................................................
Input Switch ..................................................................
LO Switch ......................................................................
Synchronous Detector ...................................................
Limiter ...........................................................................
Isolation Amplifier ........................................................
Detector/Mixer ...............................................................
Log Offset/Gain Compensation ....................................
Log Offset Compensation ..............................................
Log Gain Compensation ................................................
Video MUX ....................................................................
A5 IF Assembly ...............................................................
IF Signature ..................................................................
Common IF Signature Problems ..................................
1 MHz Resolution Bandwidth Problems ......................
30 kHz Resolution Bandwidth Problems ....................
3 kHz and 10 kHz Resolution Bandwidth Problems ...
Step Gains .....................................................................
Cal Oscillator (P/O A4 Assembly) ..................................
428
illustrates the location of the A4
Figure 9-7 on page 436 illustrates the level and
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Chapter 9