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12389-001
User Manual
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GAI-Tronics 12389-001 User Manual

Pub. 42004-674L2H
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
NOVA Public Address Systems

T ABLE OF C ONTENTS

Confidentiality Notice .....................................................................................................................1
General Information .......................................................................................................................1
Product Overview ................................................................................................................................... 1
System Requirements and Limitations ................................................................................................. 1
Features and Functions .......................................................................................................................... 2
Description of the NOVA S.M.A.R.T Components.............................................................................. 2
System Block Diagram ........................................................................................................................... 3
Locating NOVA S.M.A.R.T Modules in the Central Cabinet ............................................................ 4
Central Processor Unit ........................................................................................................................... 4
Line Integrity Module (LIM) ..........................................................................................................4
Description ............................................................................................................................................... 4
Controls ................................................................................................................................................................. 5
Set-Up ....................................................................................................................................................... 5
Operation ................................................................................................................................................. 6
Normal Mode ........................................................................................................................................................ 6
Program Mode ...................................................................................................................................................... 7
Line Integrity Module Specifications .................................................................................................. 10
Fuse Replacement ................................................................................................................................. 10
Test Tone Generator Module ........................................................................................................11
Description ............................................................................................................................................. 11
Set-Up ..................................................................................................................................................... 11
Setting the Individual Tone Output Level ........................................................................................................... 12
Test Tone Generator Specifications .................................................................................................... 12
Fuse Replacement ................................................................................................................................. 12
ALC Control Module ....................................................................................................................13
Description ............................................................................................................................................. 13
Installation ............................................................................................................................................. 13
Setup Procedure .................................................................................................................................... 14
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
V
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Table of Contents Pub. 42004-674L2H
NOVA PUBLIC ADDRESS SYSTEMS - S.M.A.R.T. MODULES
System Optimization ........................................................................................................................................... 15
Paging Level Update ........................................................................................................................................... 15
Setting the Kick-up Ratio .................................................................................................................................... 16
Setting the Page Min. Level ................................................................................................................................ 16
ALC Control Module Specifications ................................................................................................... 17
Fuse Replacement ................................................................................................................................. 17
ALC Remote Module .....................................................................................................................18
Description ............................................................................................................................................. 18
Set-Up ..................................................................................................................................................... 19
ALC Remote Module Specifications ................................................................................................... 20
Speaker Master Module ................................................................................................................21
Description ............................................................................................................................................. 21
Set-Up ..................................................................................................................................................... 22
Speaker Master Module Specifications ............................................................................................... 22
Speaker Remote Module ...............................................................................................................23
Description ............................................................................................................................................. 23
Set Up ..................................................................................................................................................... 24
Speaker Remote Module Specifications .............................................................................................. 24
ii
Pub. 42004-674L2H
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
NOVA Public Address Systems

Confidential ity 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.

General Information

Product Overview

The NOVA S.M.A.R.T. Modules are a collection of function-specific modules that perform various fault detection tasks in extended range communication systems. It is an alarm and an alarm supervision system that is transparently incorporated within a public address/paging system, such as the NOVA Public Address System. The modules are designed with a common serial interface to a GAI-Tronics central processing unit. The CPU forwards the system indications to an operator paging console typically located in a control room or office.
The NOVA S.M.A.R.T. Modules are capable of monitoring many components of any type of wired audio paging system for health status and report faults both locally through logic closure outputs, and remotely via serial data link.
The low-level audio paths through a system are monitored by the use of sub-audible tones mixed into
inputs and detected on outputs.
The high-level power audio connections are monitored for integrity by measuring loop resistance and
ground fault leakage.
Individual loudspeaker integrity can be checked using the speaker remote modules that sample
speaker audio current. When commanded, these modules report their health status to a central location via RF data modem over the audio distribution lines of a central amplifier system.
The speaker remote modules are also capable of changing individual loudspeaker power levels on
command from a central location. This can be done on a system-wide or individual speaker basis. The range of adjustment is in steps from off/mute to full power.
System Requirements and Limitations
The NOVA S.M.A.R.T. Modules are either housed in a central cabinet or installed in field locations, and each typically requires an uninterruptible 24 V dc power source.
A complete system can support up to 120 zones, each containing as many speakers as the power amplifier can support.
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
V
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Pub. 42004-674L2H
PUBLIC ADDRESS SYSTEMS - S.M.A.R.T. MODULES PAGE 2 of 24
NOVA

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.
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System Block Diagram
Figure 1. Block Diagram
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Locating NOVA S.M.A.R.T Modules in the Central Cabinet

The NOVA S.M.A.R.T. Modules must be housed in a cabinet or enclosure located in an environmentally­controlled area. In larger installations, an auxiliary panel devoted to some of the modules is desirable. The optimum configuration is to have the installed modules horizontally in “snap-track” style mountings that directly face the technician. When mounted in this manner, all board-mounted controls and connectors are easily accessible.

Central Processor Unit

The NOVA Central Processor Unit controls larger, more complex systems, and is usually housed in the central cabinet along with other system equipment.
The CPU polls the various NOVA S.M.A.R.T Modules via a common RS-485 serial bus and sends commands, as needed, to monitor the system health and supervise the ALC modules. The system CPU is responsible for setting up both manual and automatically-initiated voice paging and the monitoring of various alarm inputs.

Line Integrity Module (LIM)

Description

The GTC 12389-001 LIM Module consists of two PCBAs, the GTC 69389-01x LIM Speaker Line Termination PCBA and the GTC 69389-02x LIM Controller PCBA, connected by a ribbon cable. The
LIM can monitor the speaker wire line integrity by measuring the resistance of up to eight zones or speaker loops and reports faults on the line. When attached to a remote loudspeaker or ac power line, the LIM breaks the dc loop continuity and isolates the gap with a large capacitance. The LIM monitors the dc continuity of the loop by applying a selectable calibrated dc current across the isolating capacitors and monitoring the dc portion of the loop for changes of more than 20% in loop resistance.
Furthermore, a test for leakage to earth is conducted by applying a dc voltage between the line loop and earth ground and monitoring the current drain on the applied potential to determine acceptable limits of leakage to earth. The application of excitation current and the measurement of the result are under the control of a microcontroller and are multiplexed over eight lines per module.
In a complex alarm management system, the LIM communicates the alarm status with the system CPU via RS-485. Under RS-485 (advanced) control the test interval is under the supervision of a system central processor unit. This control can include modification and subsequent overwrite of an individual line mean value in the form of positive or negative “tweaks.”
The LIM is also able to stand alone in a simple system and output alarm status on eight line-unique, optically-isolated alarm closures. The supervised or stand-alone mode selection is via the address jumper field, JU2 through JU5 on the LIM Controller PCBA.
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Controls

The LIM module contains two push buttons, ANALYZE/STORE and TEST/STEP, and a rotary line- select switch. The button functions for the Normal mode are ANALYZE and TEST, and are
STORE and
STEP in the program mode.
In the Normal mode, pressing the ANALYZE button causes any fault condition on the line currently
selected by the rotary switch to be displayed on the fault-descriptive LEDs:
Line SHORT Line OPEN LEAK

Set-Up

Install the LIM modules in the central cabinet using the standard “snap-track” style mounting. Ensure the push button controls and the LED indicators are easily accessible to the operator or technician for diagnostic tools. Refer to the system block diagram on page 3.
WARNING
Never separate or rejoin the PCBAs at J2 and J3
with the ribbon cable while the power is applied!
1. Install the ribbon connector between J2 on the Speaker Line Termination PCBA and J3 on the LIM
Controller PCBA.
2. Connect the audio power lines from the amplifiers and speakers to the appropriate terminal blocks on
the Speaker Line Termination PCBA.
3. Make the 24 V dc power connections to TB20 on the LIM Controller PCBA.
4. Install jumper JU1 on the LIM Controller PCBA and perform the speaker line selection programming.
Refer to the “Program Mode” section below for instructions. Remove the jumper when the programming is complete.
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Set the LIM for either internal or external control. Internal or external control mode is determined by the setting of the address jumpers JU2, JU3, JU4, and JU5. These are connected in binary fashion and determine the serial network address of each individual LIM.
OTE: These settings cannot be duplicated when external control is used for multiple LIMs.
N
Table 1.
Network Address JU2 JU3 JU4 JU5
0
1
2
3
4
5
6
7
X
X
X X
X
X X
X X
X X X
Network Address
8
9
10
11
12
13
14
15
(Free-run Mode)
JU2 JU3 JU4 JU5
X
X X
X X
X X X
X X
X X X
X X X
X X X X
X indicates the jumper is installed.
5. If applicable, connect RS-485 for external communication with CPU using the 8-pin modular
connectors J4 and J1 on the LIM controller PCBA.

Operation

The LIM has two operational modes: the Normal (measurement) mode and the Programming mode. The Programming mode is selected by inserting a shorting jumper, JU1. Removing the jumper returns the LIM to the Normal mode.

Normal Mode

In the Normal mode, at a pre-programmed time interval, the microprocessor selects one of the eight monitored lines at a time, applying a specific dc current through the line dc loop, and measures the loop voltage. If the measured voltage falls within predetermined limits (as defined in the Program mode), the line loop resistance is determined to be within tolerance.
If not, an alarm is initiated as a line-unique logic closure. An LED indication is physically linked to the alarm closure. If the loop voltage is too high, (above tolerance) the line is assumed to be wholly or in part, “open.” If the loop voltage is too low the line is assumed to be wholly or in part, “shorted.”
In either case, the out-of-tolerance condition is retained in RAM for further processing as described below. The leakage test is then applied to the line. An out-of-tolerance failure is indicated by a logic output from a leakage comparator. The fault determination is a hardware function.
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A leakage fault also generates an alarm and this condition is also stored in RAM. Fault testing continues on all lines regardless of previously existing alarm conditions. This is in order to determine a return-to­normal status. A return-to-normal condition causes an existing alarm to be rescinded (removal of alarm closure). Long-term fault history and trend information is the responsibility of the system CPU and is not stored within this module.
There are two functions available in the Normal mode: a lamp test, and a display of the fault condition that caused test failure for any of the eight speaker lines.
Lamp Test
Press and hold both the TEST and ANALYZE push buttons for 3 seconds. All eleven LEDs (three fault-
descriptive LEDs and eight line-alarm LEDs) illuminate and remain so as long as the buttons are depressed.
OTE: Be aware that the eight line-alarm relay outputs are activated during the LED test.
N
Fault Condition Display
Use this feature to learn what specific measurement (line open, line shorted, or line leakage) failed for a given line during testing so that appropriate repair action may be taken.
1. Select a speaker line with the rotary line-select switch.
2. Press and hold the ANALYZE push button.
3. Wait 3 seconds
for the fault indication to be displayed on the summary LEDs. All LEDs are off if the
line passed the most recent testing. The fault indication continues to be displayed as long as the
ANALYZE button is pressed.

Program Mode

The Program mode is used to add or delete speaker lines, to set a mean voltage value and corresponding limits to be used for line testing for each installed speaker line, and to set the time interval for free-run mode line testing.
The two push-button switches, STORE and STEP, and the rotary line-select switch are active in the
Program mode. While in the Program mode, the microprocessor connects the current generator to the line selected by the rotary switch.
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