GAI-Tronics 12389-001 NOVA PA/GA Systems S.M.A.R.T. Modules - Manual (Page 13)

Pub. 42004-674L2H
NOVA P UBLIC A DDRESS S YSTEMS - S.M.A.R.T. M ODULES P AGE 11 of 24
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Test Tone Generator Module
Description
The GTC 69393-101 Test Tone Generator Module is a key component of an S.M.A.R.T. Module system.
It provides the tone signal generation and a method to mix the tone signal into the required audio
pathways. It provides a tone used as a generator for an inaudible source of power to the Speaker Remote
Modules, when used.
The Test Tone Generator module contains the following controls and indicators:
Table 3. Test Tone Generator Controls and Indicators
Control or
Indicator
Function
Communication
Indicator LED This LED lights when the module is communicating with the Speaker Master.
P5 This jumper puts the Test Tone Generator into the Diagnostic mode.
P6 This jumper resets the Test Tone Generator.
J1 This jumper adds a terminating resistor to the RS-485 line.
P1 through P4 These jumpers connect a 600-ohm terminating resistor to the input of each channel.
CH1-R21,
CH2-R28,
CH3-R39,
CH4-R44 These individual potentiometers are used to set the individual tone output levels.
Set-Up
Refer to the board layout diagram.
1. Make the low level audio input and output connections for up to four channels at TB1, TB2, TB3, and
TB4 as follows:
Table 4.
Channel 1 Channel 2 Channel 3 Channel 4
TB1-1 Shield GND TB2-1 Shield GND TB3-1 Shield GND TB4-1 Shield GND
TB1-2 Line output TB2-2 Line output TB3-2 Line output TB4-2 Line output
TB1-3 Line output TB2-3 Line output TB3-3 Line output TB4-3 Line output
TB1-4 Line input TB2-4 Line input TB3-4 Line input TB4-4 Line input
TB1-5 Line input TB2-5 Line input TB3-5 Line input TB4-5 Line input
TB1-6 Shield GND TB2-6 Shield GND TB3-6 Shield GND TB4-6 Shield GND
2. Make the 24 V dc power connections at TB5. The polarity is noted on the board.