GAI-Tronics Smart 707-001-EX-F07045 유지 관리 매뉴얼 - 페이지 10

{카테고리_이름} GAI-Tronics Smart 707-001-EX-F07045에 대한 유지 관리 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. GAI-Tronics Smart 707-001-EX-F07045 13 페이지. Smart series hazardous area speaker amplifier enclosure

페이지 인쇄

Model 707-001-EX-F07045 SmartSeries Hazardous Area Speaker Amplifier Enclosure

Troubleshooting

The following table lists some hints to aid technicians in troubleshooting.

Problem

Feedback occurs

1. If a speaker is close to the station, try using the muting feature in the amplifier

only during

enclosure at the terminal blocks. Connect the violet wire at TB1-8 to TB1-7.

page.

Refer to the wiring diagram.

2. Ensure that speakers attached to other stations located nearby are not pointed in

your direction. If changing the orientation of the other speakers has no effect,

mutual muting may be required. Mutual muting silences all the speakers within

proximity to the affected stations during a page from any one of the mutually

muted stations.

Connect the orange wire (spare) to the TB1-7 of all the stations to be mutually

muted. Note: If too many stations are selected, paging coverage can be

adversely affected.

3. Check line terminations at the line balance assembly. Line balance assembly

connections are critical.

Crosstalk

One or more system cable pairs may be improperly terminated. Visually inspect the

occurs.

system cable connections for accidental crossing of the cable pairs or grounds.

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11/07

Solution

Pub. 42004-703L2A

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