GAI-Tronics DSA-201 Руководство пользователя - Страница 6
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DSA-201 R
ODEL
EMOTE
Field Wire Installation
1. Unfasten the front panel assembly and disconnect both LEDs from the 69829-10x Speaker Amplifier
PCBA located in the rear enclosure.
2. Pull all wiring into the termination enclosure. Remove the 69829-10x Speaker Amplifier PCBA if
necessary. The use of ferrules is recommended on the ends of stranded wire to create a secure, reliable
connection.
3. Install all connections as indicated below. Refer to Figure 5 for the location of the PCBA components
wiring details and Figure 6 for the wiring details of the typical system configuration.
N
: USA
C
OTE
AND
ANADA
Association (CSA 22.1), and local codes for the specific requirements regarding your installation. Install all
equipment without modification and according to the local and national codes. Install conduit and seals
where required. Class 2 circuit wiring must be performed in accordance with NEC 725.55.
Power
This assembly operates from a 24 V ac or dc power source. A separate power feed is recommended for
each remote amplifier. Terminal block TB8 is provided for connection of power to the station. Also, the
enclosure must be connected to earth ground. Install a ring lug on the ground conductor prior to connection
to the enclosure. Secure the ring lug to the #6 ground screw on the rear enclosure.
Audio Input /Output
Terminal block TB6 has been provided to terminate the audio input line to this amplifier. An additional
terminal block TB7 has been provided to feed the next amplifier in the chain, if applicable. The connection
is not polarity sensitive.
Speaker
Terminal block TB5 has been provided to terminate the speaker or horn. The connection is not p
Audio Adjustments
Volume Control
Potentiometer R38 has been provided for volume control. To increase the volume to the speaker, rotate
R38 clockwise. To decrease the volume to the speaker, rotate R38 counterclockwise.
Gain Adjustment
This amplifier assembly contains four user adjustable gain settings:
•
0 dB
•
6 dB
•
12 dB
•
24 dB
These settings enable the user to control the maximum gain of the amplifier. The 24-dB setting provides
the maximum gain from the amplifier and the 0-dB setting enables the minimum gain. Configuration
jumpers P9 and P6 have been supplied to set the gain. Refer to Table 1 for the desired gain settings.
f:\standard ioms - current release\42004 instr. manuals\42004-452a.doc
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S
A
PEAKER
MPLIFIER
- Consult the National Electrical Code (NFPA 70), Canadian Standards
Pub.: 42004-452A
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