Installation Instructions

Installation and Operator Handbook Installation Instructions
AMX–MA–00653 Issue 0.03 (USA) 11
3.6 CONNECTIONS
3.6.1 Grounding Strap
Before connecting the DRB-25, it is recommended that a secure ground strap be connected from the
grounding stud at the rear left hand side of the DRB-25 case to a substantial ground system:
1. Locate the primary grounding stud at the rear of the chassis on the lower left hand side.
2. Connect a grounding strap from an external grounding point or ground ring to the chassis primary
grounding stud.
3. Ensure good electrical contact and security of all connections.
3.6.2 AC Power
An IEC standard AC power cable is provided with the AC and DC revert configurations. Connect the AC
power cable as follows:
1. Set the power switch on the rear of the DRB-25 to OFF.
2. Plug-in the IEC connector of the cable to the recessed IEC plug on the rear of the DRB-25.
3. Connect the other end of the AC power cable to a properly protected and grounded AC power outlet.
3.6.3 DC Power
External DC power connection for DC and DC revert configurations is via a 2-way terminal block mounted
on the rear of the DRB-25 above the mains input receptacle. Connect DC power cable as follows:
1. Ensure that DC power is not applied to the cables being connected to the DRB-25.
2. Strip back 3/8” of cable insulation on both positive and negative cables.
3. Insert positive supply into the topmost terminal (Red)and negative supply into the lower terminal
(Black).
4. Secure both terminal screws and apply DC power to cable.
DC configurations include an internal fuse within the DRB-25, however to allow isolation of the unit it is
recommended that a circuit breaker or DC switch is placed in the DC circuit to the DRB-25.
3.6.4 Antenna Cabling
The length and type of antenna cabling required depends on the system configuration and will be supplied
separately. Connect the Transmit (N-type) and Receive (BNC type) cables to the Transmit and Receive
connectors on the rear of the cabinet to the Antenna system.
3.6.5 External Interfaces
The DRB-25 supports the following external interfaces:
• Transceiver Module audio connector