GAI-Tronics 701-307 Руководство по эксплуатации - Страница 2
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701-307 Handset/Speaker Amplifier (24 V DC)
SCR Electrical Noise - Communications Alert - Please refer to Pub. 42004-140, Installation of 24 V
®
DC Page/Party
Systems, for system installation suggestions where SCR power supply systems are used,
or consult with a GAI-Tronics sales representative.
Operation
GAI-Tronics offers two types of Page/Party
page/multi-party (with five party lines allowing up to five simultaneous two-way conversations).
•
Page/Single-Party: To initiate a call, lift the station handset and press the page button or press the
handset pressbar. Speak directly into the handset to make the page announcement. The paged
individual lifts the handset of a Page/Party
•
Page/Multi-Party: First, select an available party line using the five-position selector switch. Then
make the page announcement as in single-party operation, remembering to indicate which party line
is being used. The paged individual then selects the indicated party line and lifts the handset for
two-way communication.
The following adjustments are accessible through the rear chassis of the amplifier using a small standard
screwdriver. However, these levels have been factory-set for optimal performance. Do not adjust these
levels unless you have followed all the steps in the Troubleshooting section and are still not satisfied with
the station performance. Each adjustment is clearly labeled:
•
Microphone Gain: adjusts the gain level from the microphone signal to the page or party lines
•
Receiver Sidetone: the amount of signal transmitted from the microphone to the receiver of a handset
•
Receiver Volume: adjusts the gain level from a party line to the receiver
•
Speaker Amplifier Gain: adjusts the speaker volume; also accessible from the front panel
Troubleshooting
Problem
Any problem with station
performance occurs.
Integral speaker level requires
adjustment.
Outgoing conversation level
requires adjustment.
Incoming conversation level
requires adjustment.
f:\standard ioms - current release\42004 instr. manuals\42004-422b.doc
10/10
®
systems: page/single-party (with one party line), and
®
station for two-way communication over the party line.
Review all the steps of the installation, ensuring that you have correctly
followed ALL steps. Check all the terminations on the board and in the
line balance assembly before proceeding to any other adjustments.
1. Adjust the volume control behind the nameplate on the front panel.
2. Replace the speaker or driver.
1. Adjust the microphone gain by removing the front cover of the
station and attaching a 10440 Series extension ribbon cable
between the connectors. Use a small standard screwdriver (
blade) to slowly turn potentiometer (R17) on the rear chassis of
amplifier until reaching the proper microphone gain.
2. Replace the handset microphone.
1. Use a small standard screwdriver to adjust the receiver volume
control on the rear of the amplifier using the extension ribbon cable
assembly as described above.
2. Replace the receiver element in the handset.
Pub. 42004-422B
Solution
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