11
RF Section
The RF Section converts the input signal to a 10.7 MHz IF (Intermediate Frequency). See
Figure 11-5 for a detailed section block diagram.
Note
The block diagrams for the Al4 and Al5 assemblies are located in Chapter 10,
Synthesizer Section.
Page
Troubleshooting Using the TAM
........................................
11-2
Low Band Problems (50 Hz to 2.9 GHz)
..................................
11-4
Low Band Problems
...................................................
11-5
A7 LODA (LO Distribution Amplifier)
...................................
11-6
A9 Input Attenuator
...................................................
11-7
Al3 Second Converter
.................................................
11-8
Al4 Frequency Control Assembly
.......................................
11-9
A7 LODA Drive
...................................................
..ll-
9
Al5 RF Assembly
....................................................
11-10
Confirming a Faulty Third Converter
..................................
11-10
Confirming Third Converter Output
...................................
11-11
Third Converter
....................................................
1
l-
11
Flatness Compensation Control
.......................................
11-13
Control Latches
.....................................................
11-13
SIG ID Oscillator
...................................................
11-13
10 MHz Reference
.................................................
..ll-14
A10 Tracking Generator (Option 002)
...................................
11-18
Block Diagram Description
...........................................
11-18
Output Goes Unleveled (ERR 900 or ERR 901)
.........................
11-19
Excessive Residual FM
..............................................
11-20
Flatness Out-of-Tolerance
............................................
11-21
Vernier Accuracy Out-of-Tolerance
....................................
11-21
Harmonic/Spurious Outputs Too High
.................................
11-22
Power Sweep Not Functioning Properly
................................
11-23
No Power Output
...................................................
11-23
Caution
All of the RF assemblies are extremely sensitive to Electrostatic Discharge
(ESD). F
or
ur
f th
er information regarding electrostatic cautions, refer to
“Electrostatic Discharge Information” in Chapter 1.
RF Section 11-1
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