CES ARi-52 Installation Instruction
Specifications
Input Voltage 5.15- 30 VDC
Current Drain 4.7mA @ 12V Typ No Load
RX Input Impedance 500 K Ohm
Frequency Range 67.00 to 254.1 Hz
Encode Frequency Accuracy 0.3%
Encode Time <45mS Typical
Tone Distortion < 2% THD
Output Tone Voltage Level 4..7 V P-P No Load
Encode Output Impedance 20 K Ohms
Decode Response Time <150mS Typ.
Decode Bandwidth fo +/- 1.5% Typ.
Decode Input Level -3-dB to 3.5dB
Decode Drop Out Time <200mS Typ.
TX Filter Cutoff Frequency 300Hz
TX Filter Attenuation @ 250Hz 36dB Typ.
Limited Warranty
CES Wireless Technologies (CES) warrants it's products to be free of defects in material and workmanship
and extends this warranty under intended use and normal service conditions to the original owner for a
period of two (2) years from the date of purchase.
This warranty does not apply to any product that has been subjected to repairs or alteration not authorized
by CES, or for any product that has been damaged due to accident, abuse, neglect, vandalism, loss,
unreasonable use, improper installations, lightning, fire, or water damage, or any acts of God.
The obligations of CES are limited to repairing or replacing, at the option of CES, any product or
component that is returned to the factory all transportation charges prepaid, accompanied by proof of
purchase and which examination reveals to have been defective within the warranty period stated above.
CES does not assume, nor is any person authorized to assume for it, any obligation other than that stated
herein.
CES shall not be liable under this warranty, or any implied warranty, for the loss of use of the product or for
any other consequential loss or damage incurred by the purchaser, or fitness for a particular purpose.
For technical support call CES at the numbers below:
CES Wireless Technologies
925-122 S. Semoran Blvd.
Winter Park, FL 32792 USA
Phone: lnt. + 407-679-9440
Fax: Int. + 407-679-8110
E-Mail: support@cesusa.com
Web Site: http://www.ceswireless.com
Copyright CES 1996. All rights reserved. Not to be reproduced in whole or in part without the written consent of CES. All information
contained in this document is carefully prepared and offered in good faith as a guide in the installation, use, and servicing of our products.
Installers must ensure that the final installation operates satisfactorily, within the relevant regulatory requirements. We accept no
responsibility for incorrect installation. We reserve the right to change products, specifications, and installation data at any time, without
notice. Printed in the USA.
Installation Instructions
(Ref: Man82)
ARi-52 CTCSS ENCODER-DECODER
GENERAL DESCRIPTION
The ARi-52 is an exceptional sub-miniature CTCSS encoder - decoder device,
providing 47 CTCSS tones + no tone. Selection is achieved through solder bridges.
INSTALLATION
Installation and programming of this CES product must be completed by a qualified
two-way radio technician or engineer. CES is not responsible for any operational
problems caused by system design, outside interference, or improper installation.
Observe static prevention practices.
Before Installing
The ARi-52 may be installed in almost any mobile or portable radio. The encoder
should be programmed prior to performing the actual installation into the radio.
Output Level Adjustment
The output tone level can be adjusted by turning R1 to increase or decrease the output
level. See Figure 1 for component layout diagram. The setting may vary from radio to
radio. Adjust the output level to achieve 500hz deviation on a 25khz system, 250Khz
on a 12.5Khz system. Verify that the modulation does not go into limiting when the
CTCSS tone is transmitted.
Tone Selection
Following Table 1 place solder bridges on the specified coding pads. X means solder
bridge required, blank means leave bridge open. The location of the solder bridges on
the PCB are shown in Figure 1.
Wiring Interface
This sub miniature module will easily fit in almost all popular mobile and portable
radio’s. Most radio manufacturers provide recommended hook up points in their
radio’s for CTCSS. Where possible follow the manufacturers instructions. See Table 2
for wiring details.
Mounting Details
Place the provided heatshrink tubing around the ARi-52 module and shrink the tubing
with a heat gun (preferred). Mount the encoder to a suitable location in the radio,
preferably away from high RF and sensitive receiving stages, with the provided
double-sided tape. Note: Do not overheat the encoder while using a heat gun. You
will melt the solder and the SMD components on the circuit board will become
dislodged, causing failure of the encoder, and voiding of the warranty.
Table 1. Program Jumpers
Tone Number JP6 JP5 JP4 JP3 JP2 JP1
67.0 0
69.3 1 X X
71.9 2 X
74.4 3 X
77.0 4 X X
79.7 5 X
82.5 6 X X
85.4 7 X X
88.5 8 X X X
91.5 9 X
94.8 10 X X
97.4 11 X X
100.0 12 X X X
103.5 13 X X X
107.2 14 X X X X
110.9 15 X X
114.8 16 X X X
118.8 17 X X X
123.0 18 X X X X
127.3 19 X X X
131.8 20 X X X X
136.5 21 X X X X
141.3 22 X X X X X
146.2 23 X X
151.4 24 X X X
156.7 25 X X X
159.8 26 X X X
162.2 27 X X X X
167.9 29 X X X
173.8 31 X X X X
179.9 33 X X X X
183.5 34 X X X
186.2 35 X X X X X
189.9 36 X X
Tone Number JP6 JP5 JP4 JP3 JP2 JP1
192.8 37 X X X
196.6 38 X X X
199.5 39 X X
203.5 40 X X X X
206.5 41 X X
210.7 42 X X X X
218.1 43 X X X X X
225.7 44 X X X X
229.1 45 X
233.6 46 X X X X X
241.8 47 X X X X X
250.3 48 X X X X X X
254.1 49 X X X
No Tone
Figure 1. PCB Layout
50 X X X X
Table 2. Wiring Diagram
J1 Pin # Color Description
Pin 1 Red
Pin 2 Black
Pin 3 Orange
Pin 4 Yellow
Pin 5 Light
Green
Pin 6 Blue
Pin 7 Violet
Pin 12 Gray
Pin 13 White
Pin 14 Brown
Figure 2. Circuit Diagram ARi-52
12 V: Connect to the radio’s + ve supply. The supply must be present during both
transmit and receive cycles.
Ground: Connect to 0V (Ground).
Sub Audio In: Connect to the discriminator output. This audio input is used as the
audio source to decode the correct CTCSS tone.
# Audio Out: OPTIONAL: Audio is only present here if the monitor input is active,
or a correct tone is being received, and Pin 6 is connected.
PTT In: Connect directly to the microphone PTT switch, active low only.
# Audio In: OPTIONAL: Connect to the discriminator output (see below).
Tone Out: Connect to the (transmit) audio stage, after the microphone clipper/
limited stages, and before the modulator circuit.
Tone Valid Output: This output can be used to control the receive squelch gate, or
the radio’s mute circuit. When a correct tone is received, or the monitor input is
active, this output will go low.
Tone Valid Output: This output can be used to control the receive squelch gate, or
the radio’s mute circuit. This output will be low when a correct tone is not being
received, or the monitor input is inactive.
Monitor Input: This input is used to control the channel monitor function. When
low, (e.g. microphone hook switch enabled) Pin 12 & 13 will be active only on
correct decode of CTCSS tone. Similarly if Pin 6 is connected, audio will be only be
present on Pin 4.
# - If switched speaker audio is required (audio will be heard when the correct
CTCSS tone is decoded, or the Monitor input is active) break the receive audio line
at a convenient point. Connect Pin 6 to the discriminator output side of the break and
connect Pin 4 to the output (Audio Amplifier or Speaker Side) of the break. Audio
Input has a high pass filter to filter CTCSS tones.
Factory Default Setting is 67Hz
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