Model RM-20 Repeater Maker plus CES Wireless Technologies Corp. 925-122 South Semoran Blvd., Winter Park, FL 32792 (407) 679-9440 support@ceswireless.com www.ceswireless.com MAN79 Version 1.
Table of Contents INTRODUCTION........................................................................................................................................................................... 3 SPECIFICATIONS & FEATURES ............................................................................................................................................. 5 1.0 GENERAL DESCRIPTION ..................................................................................................................
Warranty CES Wireless Technologies Corp. warrants this product to be free from defects in material and workmanship for three years from date of shipment. If such malfunction occurs, it will be repaired or replaced (at our option) without charge for materials or labor if returned to the factory. This warranty does not apply to parts damaged due to improper use- including accident, neglect, unreasonable use, and improper installation - or to unauthorized alterations or modifications of the equipment.
Thank you for choosing the RM-20 Repeater maker plus. This product has been carefully engineered and manufactured to provide reliable service in virtually any wireless communications system. Occasionally, particular systems may require special functions not available in standard products. Please call your CES Applications Engineer to discuss special applications to meet other needs.
SPECIFICATIONS & FEATURES Features: Rugged construction for harsh environments Multi-user tone panel - up to 4 user groups Cross-tone encoding supported Programmed using DTMF telephone handset or over the air Optional plug in voice delay module Power and repeat inhibit switches Auxiliary relay controlled via programmable DTMF code Benefits: Create a repeater using two transcievers Provide a backup repeater for continious duty systems Make a single/cross band repeater Provide a “portabl
1.0 General Description This manual provides detailed information regarding the installation, operation, and maintenance of the CES model RM-20 Repeater Maker plus. The CES RM-20 is an advanced low cost, compact microprocessor controlled repeater controller unit that can make a repeater out of just about any two transceivers. The standard features and versatility makes this an ideal choice for commercial, industrial or amateur use.
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.
2.5 Component Layout Fig.2.0 RM -20 B O AR D LAY O U T J3 J1 J2 JP4 TP4 R4 0 R3 7 R2 5 R2 4 JP2 R6 9 K1 TP2 JP5 U6 U2 U3 JP7 TP3 K2 JP1 JP6 JP3 Y2 U7 TP1 U1 JP8 SW1 F1 U4 Y1 SW2 U8 U5 2.6 Radio Interface Connection Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Function PTT, NO PTT, NC AUX. COMMON TX DISABLE TX CTCSS TX AUDIO RX AUDIO GROUND PTT, COMMON AUX. NO AUX.
Table 1. Radio and Auxiliary Interface (DB-15) male connector 2.7 Interconnect Interface Pinout Pin 1 2 3 4 5 6 7 8 9 Function PTT RX audio Mode Signal Input Output Input Description -35 to 35 volts, switched @ 2.5v, 47k pull up to 12v Interconnect receive audio -35 to 35 volts, switched @ 2.
Following are instructions for each connection and adjustment that is required by the RM-20 for proper pperation. Installation procedure will be outlined first followed by the adjustment procedures. All connections to the radio (s) are made via the rear panel DB-15 connector, and should be performed by a qualified two-way radio or communications engineer. Ensure that static precautions are observed and that power is not applied during installation.
Pin 9- PTT Common Most transmitters require a ground for transmitter keying , in this case connect pin 9 to ground. In cases where positive voltage is required for keying, connect this pin to the appropriate voltage source. Pin 10- Aux. NO (optional) Pin 11- Aux. NC (optional) Pin 12(Not used) Pin 13- External COR Input This connection is optional. The RM-20 can determine the presents or absents of a carrier either by its internal squelch circuit (see pin7 RX Audio) or the External COR Input.
2.12 Level Adjustments RX Audio Inject a signal modulated with a 1 kHz tone at 4 KHz deviation into the receiver. Adjust R37 for 500 mV p-p at TP2. If this level is difficult to obtain, install or remove JP4 as follows. If level at TP2 below the 500 mV and R37 is at maximum, install JP4. If level is too sensitive at TP2 remove JP4 (factory default) and readjust. Internal COR mobile detector This adjustment sets the threshold for the RM-20s internal squelch circuit.
3.0 Programming Procedures 3.1 Programming the RM-20 Programming procedures The model RM-20 can be easily programmed locally with a standard DTMF telephone. Programming can also be achieved “over the air” with a DTMF microphone. Note: Programming over the air requires a program access code. This code must be programmed locally on initial installation. Local programming Local programming is accessed by plugging a DTMF telephone handset into the programming jack (J1) on the rear panel of the RM-20.
3.
External COR polarity (2#) External COR signal can be active high or active low. If this signal is normally at a low state goes to a high state when carrier is detected (receiver squelch is open), program the polarity to active high. If this signal does the opposite, program it to active low. (See Description of External COR input) To program this item enter the command code followed by a 1 or 0, (don’t forget to enter a # (pound) key between commands and the end of the entry sequence).
Interconnect PTT in polarity (16#) This code enables and disables the interconnect PTT input when a telephone interconnect (Phone Patch) is connected via J1. To enable this feature enter the command code followed by the 1 or 0 (don’t forget to enter a # (pound) between commands and that the end of the entry sequence. 16#0# = disabled 16#1# = enabled Interconnect mode input polarity (17#) This command is only used if an interconnect is used in conjunction with the RM-20.
Morse code ID time interval (22#) This command controls the time interval in which the RM-20 transmit the ID call letters. This feature is programmable for up 90 minutes at 1 minute interval (1 through 90) and up to two hours with code 22#0#. 22#0# = 2 hours 22#3# = 3 minutes Note: The initial ID will be generated at 5 minutes regardless of the time interval programmed, and at the rate on which the time interval is programmed for thereafter.
Auxiliary relay code (28#) The RM-20 is equipped with a auxiliary relay. This relay can be used to control external circuitry or devices by sending a code in DTMF format to the RM-20. A DTMF code (8 digits maximum) followed by digit 1 will energize the relay and a DTMF code followed by digit 0 will de-energize the relay. The normal state of this relay is disabled. When the enable code is received, the relay will energize and remain in this condition until the disable code is received.
4.2 CTCSS Tone Table Tone Off 67.0 69.3 71.9 74.4 77.0 79.7 82.5 85.4 88.5 91.5 94.8 97.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 Number 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Tone 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3 254.1 Number 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 4.
4.
5.
6.
