GAI-Tronics 10458-101 600-Ohm / RF Electronics Paging Module - Manual (Page 8)

Pub. 42004-415B
Model 10458-10x 600-Ohm/RF Electronics Paging Module Page 6 of 28
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3. Carefully open the chassis, keeping the U-bracket to the right. The Speaker Amplifier PCBA is
mounted on the U-bracket and is where the settings and adjustments exist. Refer to Figure 3.
Figure 3. Electronics Paging Module (opened)
Audio Line Termination Jumper
For hardwired installations the paging module contains a jumper to terminate the audio line cable.
Jumper P1 on the speaker amplifier PCBA configures the unit for 600-ohm or 15k-ohm line termination.
Shorting pins 1 and 2 set the line termination to 15k ohms (default setting). Shorting pins 2 and 3 set the
line termination to 600 ohms. The settings options are labeled next to the jumper on the PCBA. See
Figure 3 for location of P1.
For RF installations, this jumper has no function.
LED Indicators
Two LED indicators are located on the speaker amplifier PCBA, but are visible only when the module is
opened. The Power LED is activated when the unit is powered. The Programming LED indicates when
the unit is properly connected to a programming computer using CARD Suite Programming Software.
Refer to Figure 3 for LED locations.