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ITC 220 Base Station, Locomotive & Wayside Radio Transceiver Field Service Guide PN 0046300120 Rev. A
| Page 76
D.1.2 LOCOMOTIVE TRANSCEIVER POWER CABLE
Locomotive Transceivers operate nominally at 74 VDC with an input range of 45-100 VDC. The Locomotive Transceiver
uses an MS 3102 A18-4P connector for power. Using shielded 16 AWG cable is suggested.
The following figure shows recommended construction of a power cable and wire connection pin out of the cable
connector.
Figure 32 Power cable for Locomotive Transceiver with wire connection pin out
D.1.3 WAYSIDE TRANSCEIVER POWER CABLE
Warning –
The Wayside Transceiver requires an external isolated power supply to provide ground isolation
between the unit and the site electronics. Failure to use an isolated power supply (for example, connecting a
unit directly to site batteries) would induce a ground fault at the site since the unit is grounded to the
bungalow both through the ground lug as well as the GPS and 220 GHz RF narrowband antennas.
The Wayside Transceiver operates from a 13.6 VDC nominal power supply (10.9 to 15.5 VDC range) isolated from other
electronic equipment using a DC-DC isolated converter such as the Wilmore Model 1675-12-12-15. The Wayside
Transceiver uses a Wago-type connector supplying 10.9 to 15.5 VDC.
The following figures show recommended construction of a power cable and the pin out of the Wayside Transceiver
power connector.