Watkins-Johnson Company WJ-8718-19/FE Instruction Manual page 19

WJ-8718-19/FE HF RECEIVER OONTENTS
TABLE OF CONTENTS (Cont'd)
LIST OF TABLES
Section IV
Table
Page
4-1 Preventive Maintenance Schedule 4_1
4-2 Test Equipment Required 4_4
4-3 WJ-8718-19/FE Series HF Receiver Checkout Procedure ...!!!!!!!!!!! 4-7
4-4 WJ-8718-19/FE HF Receiver Troubleshooting Procedures 4-11
4-5 1st LO Synthesizer Fault Isolat ion Chart " 4-19
4-6 VCO Fault Isolation Chart !!!!! 4_2o
4-7 Preselector Fault Isolation Chart !!!!!! 4-22
4-8 2nd LO Synthesizer Fault Isolation Chart !!!!!!!!! 4-23
2nd Converter Fault Isolation Chart !!!!!!!! 4-24
1st Converter Fault Isolation Chart !!!!!!!!!! 4-25
Input Converter Fault Isolation Chart !!!!!!!! 4-28
10.7 MHz Filter Switch Fault Isolat ion Chart !!!!!!!!! 4-30
4-13 10.7 MHz/455 kHz Converter Fault Isolat ion Chart !!!!!!!! 4-31
4-14 455 kHz Filter Switch Fault Isolat ion Chart !!!!!!! 4-32
PGZ Fault Isolat ion Chart !!!!!!!!! 4-34
Amplifier/AM Detector Fault Isolat ion Chart !!!!!!!!!!!!! 4-35
FM/CW/SSB Detector Fault Isolat ion Chart !!!!!!!! 4-37
Audio Amplifier Fault Isolation Chart . . .
4-19 VCO Band Select ' 7JJ
4-20 1st l£) Frequency Chart
1st LO VCO Fault Isolat ion Chart !!!!!!!!!!!!!!!!!!!! 4-41
32 MHz Loop Fault Isolat ion Chart !!!!!!!!!!! 4-42
Programmable Loop Fault Isolat ion Chart !!!!!!!!!! 4-42
Oit put Loop Fault Isolat ion Chart !!!!!!!!! 4-43
3rd LO Fault Isolation Chart
BFO Fault Isolation Chart !!!!!!!!!!!!!!!!! 4-45
Time Base Frequency Chart !!!!!!!!!!!! 4-46
Microcontroller Input Signal Check !!!!!!!!!!!!! 4-47
Microcontroller Bus Activity Check .............
cpu i/o signal check !!!!!!!!!!!!!!!!!!! 4-48
Synthesizer Interface Frequency Outputs !!!!!!!!!!! 4-49
IF Interface Control Signal/Data Activity Check !!!! 4-50
IF Interface Voltage Table !!!! 4-51
UART Control Signal/Data Activity Check..!!!!!!!!!!! " 4_52
I/O Signal Activity Check !!!!!!!!!!! 4-53
Data Signal Activity Check !!!!!!!!!!!!!!! 4-54
Signal/Data Activity Check !!!!!!!!!!!!!! 4-55
VCO Alignment Parameters !!!!!!!!!!!!! 4-59
Loop Test Point Voltages !!!!!!!!!!!!!!!!!!! 4-62
2nd LO Synthesizer Tuning Parameters !!!!!!!!! 4-62
4-9
4-10
4-11
4-12
4-15
4-16
4-17
4-18
4-41
4-22
4-23
4-24
4-25
4-26
4-27
4-28
4-29
4-30
4-31
4-32
4-33
4-34
4-35
4-36
4-37
4-38
4-39
4-40
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