GAI-Tronics 12389-001 NOVA PA/GA Systems S.M.A.R.T. Modules - Manual (Page 4)

Pub. 42004-674L2H
NOVA P UBLIC A DDRESS S YSTEMS - S.M.A.R.T. M ODULES P AGE 2 of 24
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Features and Functions
 Mixed analog and digital technology eliminates complex technical set-up
 SMT components

Standard industrial mounting
Description of the NOVA S.M.A.R.T Components
The NOVA System can combine some or all of the modules described below with a common serial
interface to the GAI-Tronics NOVA Central Processor Unit. The Line Integrity Module (LIM) and the
Automatic Level Control (ALC) modules are able to perform on a stand-alone basis and interface alarm
statuses via solid-state relay closure outputs.
The following is a list of the NOVA S.M.A.R.T. modules. Some or all the modules may be purchased
depending on specific customer requirements.
 Line Integrity Module (12389-001) consists of the LIM Speaker Line Termination PCBA
(69389-010) and LIM Controller PCBA (69389-020) connected by a ribbon cable. It monitors the
line resistance as a means of detecting and reporting line faults. The module injects a selectable (10,
20, 30, 40, or 60 mA) current on each speaker line. During initial set-up, a baseline resistance is
established and the LIM reports changes of more than 20%, which would indicate an open, short, or
leakage to ground has occurred. The LIM can also be used in other systems where line resistance
may be measured as a means of health-check.
 Test Tone Generator Module (12393-101) provides low frequency test tones used to health-check
the low-level audio paths and power amplifiers. This module is used in conjunction with the Speaker
Master Module as a power source for remote speaker modules.
 ALC Control Module (included with 12395-001) provides a means to automatically adjust the
volume of voice pages and alarm tones in response to varying levels of ambient noise in a specific
area. In a typical system, the ALC Control Module is located in-line between the low-level audio
path switching equipment and the regional power amplifier. The control module provides line power
to the ALC Remote Module, which is connected to a dummy speaker or other microphone device for
sensing ambient noise.
 ALC Remote Module (included with 12395-001) samples the ambient noise within a paging zone
and provides necessary information to the ALC Control Module to adjust the volume of voice pages
and alarm tones in a specific area.
 Speaker Master Module (69403-101) controls power to the remote and transmits the power level tap
commands to the Speaker Remote Modules and receives the speaker coil health check status from the
Speaker Remote Modules.
 Speaker Remote Modules (13317-001 and 13317-002) receives power level tap commands to
control speaker volume and health checks the speaker coil.
Each module, and its function, set-up, and adjustment is described in detail in this manual. Refer to the
block diagram on page 3.
The Model 12604-014 Replacement Fuse Kit is available for all of the NOVA S.M.A.R.T. Modules. It
contains ten of each of the required sizes.