Mechanical construction
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– E65C – CU-P40, P41, P42 – User Manual
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3.2
Power supply, antenna and interface connections
The socket for the external 5 V supply is provided on all communication
units CU-P4x. To ensure reliable modem operation, the use of an external
5 V power supply is recommended for E650 meters in some cases. Please
refer to section 4.4.7 and 4.4.8 for addition information.
With the screwless spring-loaded terminals of the CS interface (only pre-
sent on CU-P41 and CU-P42) the polarities are determined as follows:
+ left terminal (23)
– right terminal (24)
The pins of the RJ12 socket (only present on CU-P41 and CU-P42) are
numbered as follows:
1
6
Fig. 3.2
Pin numbering of RJ12 socket
3.2.1
Connections CU-P40
1
2
Fig. 3.3
Connections CU-P40
1 Input external 5 V power supply (2-pin socket)
2 Antenna connection (MCX socket)
Fig. 3.4
Connection diagram communication unit CU-P40
