GAI-Tronics 12389-001 NOVA PA/GA Systems S.M.A.R.T. Modules - Manual (Page 16)

Pub. 42004-674L2H
NOVA P UBLIC A DDRESS S YSTEMS - S.M.A.R.T. M ODULES P AGE 14 of 24
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Setup Procedure
As a prerequisite, matrix (audio steering chassis) output for this channel is set to 0 dBm (full system
output level).
1. Press the I
NITIALIZE
button for 3 seconds. The microcontroller sets the attenuator to −21 dB and auto-
initializes the LVL mode. The A
CKNOWLEDGE
LED flashes for 1 second, and the P
OWER
LED
begins to flash.
2. Station a partner with a two-way radio at the zone to which this device is associated. Initiate paging,
and with guidance from your partner, adjust the volume level of the page to accommodate the current
ambient noise level by pressing the UP or DOWN buttons. (The microcontroller is in the LVL
mode.) The Bar Graph LEDs indicate the paging and noise levels coming back from the Remote
Module.
3. After the paging and adjusting process is finished, press the C
ALIBRATE
button for 3 seconds.
A CKNOWLEDGE
LED flashes for one second. This causes the microcontroller to begin a 10-second
measurement cycle of the ambient noise at the remote site. (Microcontroller measures and averages
noise until the 10-second timer counts down, causes the A
CKNOWLEDGE
LED to flash, saves the
result in RAM, and waits for Save command.) Note: If the ambient noise level changes significantly
during this calibration period, the noise level will no longer match the adjusted paging volume and the
adjusted paging volume and adjustment procedure must be repeated.
4. After 10 seconds, the A
CKNOWLEDGE
LED begins flashing signifying that it has completed analysis
of the ambient noise. The Bar Graph LEDs indicate the level of noise from the paging zone. This
visual result may be compared with that which was observed during the test paging.
5. Press S
AVE
to store the paging volume setting along with the companion noise level.
(Microprocessor stores attenuator reference level and the noise reference level in NVRAM). The
A
CKNOWLEDGE
LED and the P
OWER
LED cease flashing (Normal mode).
6. Test the system by introducing more noise into the controlled zone, and listening to additional paging
over the increased noise. If the paging volume level is not sufficient to overcome the increased noise,
refer to System Optimization below.