RTI VHD-8, Инструкция по установке и эксплуатации, Страница: 27 / 32

27
It’s Under Control
®
CHAPTER 5 | TROUBLESHOOTING
SYMPTOM:
No RS232 control of VHD-8
CAUSES:
1) Faulty wiring
2) Incorrect string
3) Wrong RS232 parameters
SOLUTIONS:
1) Verify cable and check RS-232 pinout
2) Verify string from manual.
3) Type in correct RS232 communication parameters: Baud rate:9600; Data bit: 8; Stop
bit: 1; Parity bit: none
SYMPTOM:
No IR control of VHD-8
CAUSES:
1) Faulty wiring
2) IR signal level
SOLUTIONS:
1) Verify all wiring & terminations - IR jacks are 1/8” mono, tip = IR+, ring=Gnd.
2) Adjust IR signal going into VHD-8.
3) Verify connection is to IR CTRL input jack.
SYMPTOM:
No IR control via VHR-1
CAUSES:
1) Faulty wiring
2) IR signal level
3) IR emitter or IR emitter placement
SOLUTIONS:
1) Verify all wiring & terminations - IR jacks are 1/8” mono, tip = IR+, ring=Gnd.
2) Adjust IR signal going into VHD-8.
3) Verify IR emitter is working and properly placed.
SYMPTOM:
Static becomes stronger when connecting the video connectors
CAUSES:
1) Bad grounding
SOLUTIONS:
1) Check the grounding connections.
SYMPTOM:
Cannot control the device by RS232, IR or front panel buttons
CAUSES:
1) The VHD-8 has failed
SOLUTIONS:
1) See service and support section of this guide