GAI-Tronics 69037-101 Centra-Page Station Card - Manual

Pub. 42004-221A
GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA
610-777-1374 „ 800-492-1212 „ Fax: 610-796-5954
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G A I - T R O N I C S ® C O R P O R A T I O N
A H U B B E L L C O M P A N Y
Model 69037-101
Station Card for Centra-Page Systems
Confidentiality Notice
This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics. GAI-
Tronics retains all intellectual property and other rights in or to the information contained herein, and
such information may only be used in connection with the operation of your GAI-Tronics product or
system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.
Introduction
GAI-Tronics Centra-Page system provides dependable paging and party line communications for rugged
and hazardous industrial facilities. Centra-Page features centrally-located electronics that provide
environmental protection and unitized amplification for easy maintenance. Standard Model 10468-002
Centra-Page cabinets can support up to 30 handset stations and in most cases up to 60 paging speakers.
Alarms and telephone interfacing can also be added to Centra-Page systems.
The heart of the system is a centrally-located card rack containing printed circuit board assemblies
(PCBAs) Model 69037-101. One plug-in PCBA, also referred to as a line card, is placed in the central
card rack assembly for each independent station and speaker. Each line card contains a handset dc power
source, dual-switching relays and a 16-watt speaker amplifier with 8-ohm and 70.7 V line outputs.
Additionally, each card has a paging-level speaker volume control (which does not affect alarm signal
level), and a removable link to silence the speaker amplifier for page calls from that station, preventing
acoustic feedback. Each card also contains five LED indicators for operating condition or mode.
The Model 69037-101 Station Line Card plugs into a Model 10461-002 Centra-Page Card Rack located
in the central cabinet. The central cabinet is installed in a non-hazardous area. The Model 69037-101
contains both the handset amplifier power supply and an amplifier for an associated speaker or
horn/driver combination.
As shown in Figure 2, the LEDs located along the edge of the card allow a technician to easily perform
troubleshooting at the central cabinet. Each line card contains a 16-watt audio amplifier fed from the
page line bus that is intended to drive loudspeakers in the vicinity of the handset station. There is a
volume control and mute link on the input to each amplifier. The control and link are actually located on
the 10461-002 Card Rack so adjustments for various locations are maintained even though line cards are
replaced or exchanged.