Patton electronic 1070 user manual Symptom Appendix B Troubleshooting Problemsolution Solution

SYMPTOM

APPENDIX B

TROUBLESHOOTING

PROBLEMSOLUTION

SYMPTOM

APPENDIX B

TROUBLESHOOTING

PROBLEM SOLUTION

LEDs do not light when AC power transformer is plugged into wall

1.	Loose power
connection
2.	Outlet is defective
3.	AC power cord is
defective
4.	The AC transformer
is not plugged into the

1.Make sure the AC connection is flush

2.Try a different outlet

3.Remove the cord from the outlet and check for continuity

4.Have another cup of coffee!

"TD" and "RD" LEDs indicate activity, but units will not communicate or data is garbled

1. Improper RS-232	1. Check wiring
wiring	between Model 1070
	and connected DTE
	device—it should be
	straight through
2. Improper twisted	2. Compare your
pair wiring	twisted pair wiring with
	the diagram in Section
	4.1

No data transfer in either or both directions

Model 1070

1.Improper twisted pair wiring

1.Compare your twisted pair wiring with the diagram in Section 4.1

3.Improper bit rate setting

3.Make sure the bit rates on all connected serial devices are the same

2. Improper bit rate	2. Ensure all bit rate
setting	settings on all
	connected serial ports
	are the same
3. Distance	3. Check specifications
specifications	in Appendix A
exceeded

"TD" and "RD" LEDs indicate activity, but "CD" LED is unlit or red (should be green)

1.Defective twisted pair line

2.Poor twisted pair connection to Model 1070s

1.Test continuity of twisted pair line

2.Check screw terminal/RJ-11 connections to Model 1070s; check integrity of plug RJ-11 terminations

Occasional data	1.	Distance/bit rate
errors	capacity exceeded
	2.	Poor quality twisted
	pair circuit
	3.	Poor twisted pair
	connections to Model
	1070s

1.Check specifications in Appendix A

2.Use a different twisted pair circuit

3.Check screw terminal/RJ-11 connections to Model 1070s; check integrity of plug RJ-11 terminations

Copyright © 1997

Patton Electronics Company

All Rights Reserved

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