Operations Manual

INSTALLATION 3-5
O&M of the MCC-545B PACKET DATA RADIO
12/2000
3.2 Equipment Installation
Although the 545B is housed in a metal enclosure, it is not waterproof. If your application
requires using the 545B outside of an environmentally controlled shelter or vehicle, you must
install the 545B inside a waterproof enclosure. A NEMA enclosure is generally used in outdoor
installations. The unit operates over a temperature range of -30°C to +60°C.
3.2.1 Antenna Installation
MCC buys all antennas from an antenna vendor. Each antenna is shipped with a set of assembly
instructions. Refer to these instructions for assembly details.
Antenna installation is entirely dependent on site conditions. You should always consult with
MCC's engineering department for help in the proper placement of antennas. Remember that
antenna placement can make the difference between a system that performs marginally and one
that performs well.
3.2.2 Cable Connections
The following is a general description of cable connections for the 545B. The 545B connection
data is shown in Table 3.1, along with general connection information.
To ensure proper operation, shielded cable must be used for all connections. All cabling must be
grounded at the 545B enclosure. All cables must have adequate strain relief and a weatherproof
seal provided at the entry point to the enclosure.
The 545B has one 44 pin I/O connector, that contains three RS232 port wires and one
digital/analog data I/O wires. MCC provides a standard cable harness that breaks out the 37 pin
connector to three 9 pin RS 232 connectors and one 25 pin I/O connector. A schematic for this
connector is given in Figure 3.2 . Table 3.1 describes the pin out of the four I/O connectors.