GAI-Tronics 370-400 UHF and VHF Page/Party Radio Couplers - Manual (Page 7)

Pub. 42004-432D
Model 370-400 UHF and 370-420 VHF Page/Party
®
Radio Couplers Page: 7 of 13
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Opening the Station
Remove the four screws from the front panel and remove the front panel from back enclosure.
Power
The Page/Party ® Radio Coupler can be powered from an included universal ac power source or
24-volt dc source.
ATTENTION
Do not use an ac and dc power source at the same time.
When using the universal ac power source, TB1 is used for field wiring. P1 and P2 are used to connect
to the power supply unit. Attach #6 spade lugs to the wires before attachment to the TB1 terminals for
the most secure connection. TB2 is not used in this configuration.
Table 1. TB1 - Universal AC Power Connections
Pin Number Pin Name
1 Input line
2 Input neutral
3 Earth
When using a dc power source, TB2 is used for the field wiring. Attach #6 spade lugs to the wires before
attachment to the TB2 terminals for the most secure connection. TB1, P1 and P2 are not used in this
configuration.
Table 2. TB2 - 24 Volt DC Connections
Pin Number Pin Name
1 24 V dc +
2 24 V dc −
3 Earth