APPLICATION NOTE
RRX-450/ 452/ 460 w/ RRX-ACC and RRX-GCI Cables
Hookup to CSI Model LT4200/ 4900 LTR Controllers
RRX-CGI
CABLE
COLORS
DRAIN (N/ C)
(BLU/ WHT)
ORG/ BLK
RED
BLK
ORG
WHT
GRN
BLU
(BLU/ WHT)
N/ C
N/ C
N/ C
N/ C
CSI
CONNECTOR
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
REPEAT DISABLE (GND)
+12VDC IN (3 AMP PICO FUSE IN RRX)
GND
TX AUDIO OUT
PTT/ TX CMD OUT
RX/ DISC AUDIO IN
SUBCODE/ LTR DATA OUT
COS (CARRIER SQ BRK = 0 V), OPTIONAL
J1
P1
CSI INTERNAL JUMPERS
JP8
JP9
JP10
JP11
JP12
JP13
JP14
JP15
JP16
JP17
JP18
"IN" = TX NORMAL
"OUT" = RX INVERTED
"IN" = LTR DC OUTPUT
"GND" for TX KEY
OUT
Set for "INT SQ" = OUT
OUT
OUT = +20 dB
IN
IN
IN
1
NOTE:
Preset all pots to
12 o'clock, a close
approximation of
final settings.
LCD READOUT
FRONT OF CSI UNIT
CSI MODEL LT4200/ 4900 -- LEFT SIDE
Follow CSI instructions to set all audio levels.
1
DO NOT ground the Shield/ Drain Wire at the Controller end; leave it
grounded at the RRX only.
RRX-450/-452/-460 JUMPER SETTINGS (Same as factory settings)
PJ401
PJ402
PJ403
PJ404
PJ405,PJ406 Not Installed
PJ407
NOTES:
1. A 1KΩ resistor installed in RRX J401 (Pin 4 to Pin 7), turns OFF the RRX internal CTCSS/ QC encoder when RRX-CGI
is connected to P1, pin 1, as shown. DO NOT set RRX R423 to 0 (zero). (This does not disable the DQC encoder.) The
RRX must be set for a (any) QC code AND the "RP-200" field must be set to "Y"es.
2. If PJ404 is left in "A" position, either unplugging the RRX-GCI cable OR lifting the ORG/BLK wire from GND will automatically
revert an RRX Repeater to normal (QC) Repeater mode, as programmed. When it is re-connected, the QC encoder will
again be automatically disabled (i.e.: no RESET required).
3. Verify/ set RRX R426 (VOICE DEV pot), reduced to 4.0/1.7 kHz microphone voice deviation limiting to allow for 1.0/0.8 kHz
of LTR data deviation. Then adjust the CONTROLLER pots to attain these levels. Leave all other RRX potentiometers at
factory settings.
Publication 14540013 Rev. A 00-01
P.O. Box 1998, Carmel, IN 46082-1998 • 505 W est Carmel Drive,Carmel, IN 46032 • USA
A
B
A
A
B
Ph: 317-846-1201; 1-800-USA-1-USA (1-800-872-1872
WEB: www.ritron.com • E-mail: ritron@ritron.com
BEEP GENERATOR NORMAL
INTERNAL AUDIO FILTER SELECT (HIGH PASS)
AUDIO PATH TO TONE DECODER
REPEAT DISABLE NOT SELECTED HERE (See Note 2)
"CD" CARRIER DETECT (LO) TO BLU/ WHT WIRE
)
• Fax: 317-846-4978
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