User's Manual

M7X and M7R Page 4-28 Installation
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RCU Connector
An 8-way RJ48 socket marked RCU that is used to connect a co-located (less than 10 metres) M7C RCU.
The link provides E1 digital voice and data, plus power for the RCU.
The pin-out is listed in Table 4-15.
The connector has an integral green indicator that lights when a valid E1 signal is detected.
Table 4-15 RCU Connector Pin-Out
Pin Signal Characteristics Input or Output
1
2
RRing
RTip
Balanced 120 ohm, 2.048 Mbps, HDB3 coding. Input
3 Ground 0 V. -
4
5
TRing
TTip
Balanced 120 ohm, 2.048 Mbps, HDB3 coding. Output
6 Supply
When the radio is operating from an ac input, the
output is 24 Vdc (±1 V).
When the radio is operating from a dc input, the
output is between 20 and 32 Vdc.
The Supply output is fused at 500 mA.
Output
7 Ground 0 V. -
8 Supply
When the radio is operating from an ac input, the
output is 24 Vdc (±1 V).
When the radio is operating from a dc input, the
output is between 20 and 32 Vdc.
The Supply output is fused at 500 mA.
Output