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Chapter 13 Troubleshooting
13-10
Radio to DSP-232 Problems
The majority of these problems are directly attributable to incorrect wiring or poor solder joints. Perform a continuity check of the cable to make absolutely
sure it’s not a open circuit that’s causing a problem.
Problem Symptom
Cause Test/Solution
Radio won’t talk to DSP.
You do not receive data on air
Open line in cable
Incorrectly wired cable.
Incorrect modem loaded.
Wrong mode selected.
Continuity check cable and repair, if
necessary.
Wire correctly.
Load proper modem.
Change to desired Opmode.
Morse Problems
Problem Symptom
Cause Test/Solution
No Copy.
No displayed Morse.
THRESHOLD command not set
correctly.
Not tuned correctly.
Audio level not set correctly.
Set command so DCD light comes
on and goes off in concert with the
signal.
Adjust radio tuning so that 800 Hz
pitch is produced; tuning indicator’s
lights should deflect to the left when
CW tone is present.
Set radio’s AGC control to “slow.”
Adjust volume level to DSP so
tuning indicator’s lights deflect to the
left only when tone is present. DSP
needs a minimum of 150 mV
p-p
of
audio voltage to decode Morse; 400
mV
p-p
is best.
Summary of Contents for DSP-232
Page 120: ...Chapter 6 GPS Applications September 05 6 1...
Page 138: ...Chapter 7 Maildrop Operation 7 18 September 05...
Page 158: ......
Page 159: ...Chapter 8 ASCII and Baudot Operation September 05 8 1...
Page 185: ......
Page 186: ...Chapter 9 AMTOR Operation September 05 9 1...
Page 198: ......
Page 199: ...Chapter 10 Morse Operation September 05 10 1...
Page 207: ......
Page 208: ...Chapter 11 SIAM and NAVTEX Operation September 05 11 1...
Page 230: ......
Page 231: ...Chapter 12 PACTOR Operation September 05 12 1...
Page 240: ...Chapter 13 Troubleshooting September 05 13 9...
Page 254: ...Chapter 13 Troubleshooting 13 9...
Page 256: ...DSP 232 Manual Addendum September 05 AD 2...
Page 259: ...Appendix A Radio Connections Radio Connection Diagrams September 05 A 3...
Page 260: ...Appendix A Radio Connections A 4 September 05...
Page 261: ...Appendix A Radio Connections September 05 A 5...
Page 262: ...Appendix A Radio Connections A 6 September 05...
Page 263: ...Appendix A Radio Connections September 05 A 7...
Page 267: ...Appendix D Mailbox Upgrade September 05 D 2...
Page 268: ...Appendix E Schematics and Pictorial September 05 E 3...