CES M-20 Repeater Maker plus, Инструкция по установке и эксплуатации

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CES SUPPORT 407-679-9440 Page 7 MAN79 © CES 2009
2.0 Installation Instructions
2.1 General Information
Installation of the model RM-20 should be performed by a qualified two-way radio or communications technician.
Ensure that static precautions are observed and that power is not applied during installation.
Shielded audio cable should be used for all audio signal line connections to the transmitter-receiver combination.
Terminate ground shields at the DB9 connector only to prevent hum and noise due to ground loops. The shield at
the other end of the cable must be left unconnected. The best location for the units is as close as possible to the
transmitter-receiver combination, thus allowing the shielded cables and wires to be as short as possible.
2.2 Material and Equipment Required for Installation
The following items are needed in order to install the model RM-20:
 #2 Phillips screwdriver

Solder and soldering iron
 Service monitor or deviation meter (optional for transmitter deviation)
 1/8” flat blade adjustment tool or jeweler’s screwdriver
 Oscilloscope or RMS meter voltmeter
 A DTMF telephone Handset
 Digital Multimeter
 Portable transceiver programmed with same frequencies as the receiver and transmitter interfaced with the
RM-20
2.3 Mechanical Installation
Place the RM-20 on any surface away from sources of extreme heat or cold. The RM-20 should be close to a good
grounding system if at all possible for maximum lightning protection.
2.4 Electrical Installation
Electrical installation of the model RM-20 involves connections to a radio receiver and transmitter via J3 (DB-15
male). An optional connector J2 (DB-9 female) is provided for the connection of a telephone interconnect such as
the CES model 4700VP. Figure 1 shows the rear panel of the RM-20. Table 1 shows functional information for
each pin of the DB-15 male on the rear panel. Table 2 shows functional information on each of the interconnect pins
of the (DB-9 female) connector. And Table 3 shows the RM-20 programming jack.
Fig. 1.0 RM-20 Rear Panel Diagram
J2 Interconnect J3 Radio Interface
J1
Prog