Communication-Applied Technologies ICRI-2P User manual

Revision I
3/2009
Setup and Operating Procedures
ICRI/2P™
Incident Commanders’ Radio Interface™
A Rapidly Deployable, Radio Interoperability Solution for Public Safety Personnel
MANUFACTURED BY
COMMUNICATIONS-APPLIED TECHNOLOGY CO., INC.
RESTON, VA., USA
CAGE CODE: 0EEY2
http://www.c-at.com
If you have any questions, please contact:
C-AT TECHNICAL SUPPORT at 800-229-3925 x23 (voice) 703-471-4428 (fax), or
E-mail to [e-mail] or access the ICRI bulletin board at www.c-at.com

TABLE OF CONTENTS:
THEORY OF OPERATION ........................................................................................................3
PRE-OPERATIONAL ACTIVITIES..........................................................................................4
INTEROPERABILITY DOS AND DON’TS..............................................................................5
1.0 SET-UP AND USE INSTRUCTIONS...............................................................................6
2.0 CONTROLS AND INDICATORS ....................................................................................7
FRONT PANEL............................................................................................................................... 7
REAR PANEL................................................................................................................................. 8
3.0 ICRI POWER......................................................................................................................9
POWER THE ICRIWITH INTERNAL 9V BATTERY:........................................................................... 9
POWER THE ICRIWITH THE OPTIONAL C-AT BATTERY PACK (8 “AA” CELLS) ........................... 10
POWER THE ICRI-2P WITH CIGARETTE LIGHTER OR ALLIGATOR CLIPS CABLE (P/N 179.0730).... 11
4.0 PORTABLE RADIO INTERFACE................................................................................12
CONNECTING THE PORTABLE RADIO............................................................................................ 12
OPERATING THE PORTABLE RADIO AFTER CABLE CONNECTION................................................... 14
USING A NEXTEL™PHONE IN DIRECTCONNECT™MODE ........................................................... 14
SETTING THE RADIO TO BRIDGE THROUGH THE ICRI................................................................... 15
TROUBLESHOOTING RADIO SETUP............................................................................................... 15
5.0 ICRI “P-O-T-S” PHONE LINK ......................................................................................16
CONNECTING A LAND LINE TELEPHONE TO THE ICRI-2P............................................................. 16
CONNECTING A CELLULAR TELEPHONE TO THE ICRI-2P............................................................. 17
6.0 THE LOCAL HANDSET.................................................................................................18
USING THE HANDSET................................................................................................................... 18
ADJUSTING THE VOLUME ............................................................................................................ 18
APPENDIX A: CONNECTOR PIN-OUT DATA.....................................................................19
APPENDIX B: ICRI BOARD ADJUSTMENTS......................................................................20
APPENDIX C: ICRI OPTIONS.................................................................................................22
CONNECTING EXTERNAL SPEAKERS ........................................................................................... 22
ICRIUNIT IDENTIFIER ................................................................................................................ 22
250’ RADIO EXTENSION INTERFACE (CABLE REEL)P/N 179.6213............................................. 23
SET-UP OF THE CABLE-REEL........................................................................................................ 24
APPENDIX D: PART NUMBERS FOR ICRI, ACCESSORIES AND RADIO CABLES..27
ICRICONFIGURATIONS .............................................................................................................. 27
ICRIOPTIONS............................................................................................................................. 28
INTERFACE CABLES FOR STANDARD DIN CONNECTOR ICRI...................................................... 30
APPENDIX E: FCC 15.21 INFORMATION TO USER: ........................................................34

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THEORY OF OPERATION
The “2P” can provide a communications bridge, or link, between two public safety agencies with
otherwise incompatible radios; can quickly establish the link as a tactical situation rapidly unfolds;
and requires minimal resources to enable it initially, or to maintain its operation over many hours.
The 2P will provide full operational capabilities moments after arrival on-scene, and remain
operational for 30+ hours powered by 8 “AA” batteries, or 6 hours powered only by an internal 9V
alkaline battery.
The 2P performs two primary functions for public safety personnel:
•Distributes the audio received from one two-way radio, handset/headset,ortelephone, to other
devices connected to the 2P.
•Utilizes this same incoming audio to “key” the other radios or telephones connected to the
ICRI. The radios can be portables, mobile, NEXTEL “Direct Connect” phones, or a
combination. Landline telephones, cell phones, STU, STE or satellite phones can also be
connected to the ICRI.
The ICRI-2P circuitry does not attempt to modify or digitally process the incoming audio, so that
unnecessarydelays are not inserted into the audio transfer or “keying” processes. Radios,telephones,
and/or recording devices connected to the ICRI are provided with the incoming audio, essentially in
real-time. An audio “buffer” preserves the first syllables of incoming audio processed through
“trunking” radio systems.
This version of the ICRIcontains two circuits that keythe radios connected to the ICRI; these circuits
are commonly referred to as “VOX” or “voice-activated switches.” Onlythe VOX directlyconnected
to the incoming audio is used to keyeach of the other radios simultaneously(allothersaretemporarily
disabled, to prevent a second “voice” from causing a disruption of communication).The ICRI uses
these circuits to perform other controlling functions as well.

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PRE-OPERATIONAL ACTIVITIES
Some pre-planning is necessary to ready the ICRI for rapid deployment. The following should be
accounted for before placing the ICRI on-line:
1. Determine what the power source will be for the ICRI. Verify that a “fresh,” 9V, alkaline
battery is available or that one of the external power source option are available.
2. Determine what brand and model of radios will be connected to the ICRI and that an
“interface” cable for each radio is available.
3. If radios are not maintained with the ICRI, advise participatingagencies that they will need to
supply a “spare” radio, for the radio interoperability.
4. Verifythat the radios are known to operate properlyand have at least one fullycharged battery
or other reliable power source.
The “2P” can be powered by an internal 9-volt battery or an external DC source up to 20 VDC.
Among the power sources that can be used to power the ICRI are:
12 volt vehicle battery
Vehicle cigarette lighter
115v AC (with an external adapter)
BA590 “military”
Commercial dry-cell or other battery (7.2V or greater)
C-AT 12 volt battery pack (uses 8 “AA” batteries)
Single, 9V alkaline battery
The ICRI’s internal regulated power supply is reverse polarity protected, but it is important to check
polarity of DC supplies before connecting them to the ICRI.

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INTEROPERABILITY DOS AND DON’TS
These “universal” rules will help to ensure that the part of communications interoperabilitywillwork
properly.
1. Maintain COMSEC when forming interoperability bridges.
2. Verifythat only one interoperability bridge in the area is using the radio frequencies that you
will be using.
3. Audio and RF cables should be separated from AC power cables by12” (use an external DC
source or batteries when you cannot maintain the separation).
4. When plugging in two or more radios within the same radio band (i.e. VHF) into a radio
bridge, like the ICRI, provide as much vertical separation as possible to reduce the chance for
interference due to the transmitted signal from one radio reducingthereceivesensitivityof the
other “in band” radios. Consider using external mobile antennas connected to the radios if
necessary. Use only bridge interconnect cables that are well shielded.
5. Some bridge cables contain in-line, audio amplifiers forradiosdesigned withlow audiolevels.
It is best to rout those cables awayfrom radio antennasand connectors---lotsof RF anddistort
the audio amplifier’s output to the bridge.
6. Don’t use “SCAN” mode for any radios connected to a radio bridge. This is particularly
important when you are using the bridge as a tactical repeater, where two or more radios have
similar channel programming. If both radios are capable of hearingthe same signal, theywill
key each other up "ping-pong,” interfering with the function of the bridge.
7. When using a remote device to control an interoperabilitybridge, verifyconfiguration of talk
groups with on-scene commander. Do not change talk groups settings without confirmation
from local personnel to avoid inadvertentlyremoving necessarypersonnel from radio traffic.

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1.0 Set-up and Use Instructions
As a minimum, the following will be required for ICRI operation:
•ICRI assembly
•A 9V alkaline battery or power supply with interconnect cable to ICRI
•Two radio interface cables or a radio interface cable and a cell phone cable (no external
cable needed for land-line phone connection)
•Two radios and/or a phone
Determine power method and connect to ICRI. Insert 9V battery into housing on rear of ICRI-2P if
needed.
Place the POWER switch in the “ON” position; the “OK” LED should be lit. This will provide at
least 6 hours of continuous use.
Check the radios’ transmit and receive functions, battery and channel selection.
Connect one interface cable to the ICRI and one radio
Connect the handset.
Set the volume controls for the radios and handset to a position. Mid way between fully
CLOCKWISE and fully COUNTER-CLOCKWISE
NOTE: A radio’s internal speaker will be disabled whentheinterconnect cable has been attached,
so you must use the handset, or a second radio on the same channel to verify the communications
link.
Active VOX will light when the radio is transmitting.
Repeat with the other radio/phone to be used.
FIGURE 1: ICRI/2P FRONT AND REAR PANEL

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2.0 Controls and Indicators
Front Panel
FIGURE 2: FRONT PANEL
RADIO INTERFACE JACKS (1 and 2) A
The two radio interface jacks on this unit are a 5-pin 180°locking-DIN type jack. Make sure the interface
cable is fully seated before use. The radio’s internal speaker and hand mic functions are disabled. Use the
ICRI handset to talk/listen if using the ICRI as a base station (a remote speaker jack is an ICRI option).
Pinout:
1- Ground
2- Audio from radio
3- Audio to radio
4- No connection
5- P-T-T Enable
VOICE ACTIVATED CIRCUIT (VOX) LED INDICATOR: B
When lit (only one at a time) indicates the VOX, of the “inputting” radio, is active. If the VOX stays
permanently lit, you may need to turn down the volume of the radios until the light is lit only during input.
HANDSET INTERFACE JACK C
This five pin, 240°connector supports the handset (p/n 280.0125 only; other ICRI handset models are not
compatible).
Pinout:
1- Ground
2- Audio from handset’s microphone to the ICRI/radios
3- PTT
4- Audio to the handset’s speaker from the ICRI/radios (+)
5- Audio to the handset’s speaker from the ICRI/radios (-)
HANDSET VOLUME CONTROL D
This knob controls the volume tothe handset only. Turn clockwise for more volume and counterclockwise
for less volume.
To adjust the volume of the radios, use the corresponding radio’s volume knob.
POWER STATUS INDICATOR LIGHT: E
When lit the ICRI-2P is powered up. The low voltage light will light when the voltage is below 7.5V. If
using internal battery power, there will be approximately 6 hours of operation before the battery will need to
be replaced.
POWER SWITCH: F
This two-position switch is used to turn the ICRI “ON” and “OFF.” There is no microprocessor “boot”
time. If the unit is turned off, it will immediately resume the bridge link when turned back on.

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Rear Panel
FIGURE 3: REAR PANEL
RJ22 TELEPHONE JACK: A
This RJ22 (4 wires) jack supports the connection of the ICRI to a land-line telephone through the
telephone’s handset wiring (using the coiled cord between thetelephone’s basewith touchpadand
the handset) or the 2.5mm jack on a cell phone (using C-AT interconnect cable P/N 179.0693).
A phone connected to the ICRI will be used for dialing and other keypad functions since the
speaker and mic functions are disabled. Use the ICRI’s handset to talk/listen to the remote
individual, if using the ICRI as a base station.
INTERNAL 9V BATTERY: B
Housing holds a single, 9V, alkaline battery. A “fresh” batterywillprovide approximately6 hours
of run time during full operation
DC INPUT JACK: C
This is a 2-pin locking-type jack is the input. Use the C-AT supplied power supply or contact C-
AT for additional power options. An eight “AA” battery pack is available for 30 hours of run
time, as well as AC or DC power option.
Pinout:
1 - +7 to +20 VDC
2 - Ground
Note: See appendix C for pinout.

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3.0 ICRI Power
Select the power source to be used
Single, 9V alkaline battery
C-AT 12 volt battery pack (uses batteries)
12 volt vehicle battery
Vehicle cigarette lighter
115v AC (with an external adapter)
BA590 “military”
Commercial dry-cell or other battery (7.2V or greater)
Power the ICRI with internal 9V battery:
A single 9V alkaline battery will power the ICRI for at least 6 hours of continuous use.
To install the 9V battery, remove the battery housing from the rear of the ICRI by pushing up on the
compartment “door” and then pulling it out.
Place the 9V battery in the housing as indicated in Figure 5.
Reinsert the battery housing into the ICRI. Be sure that the battery housing is firmly seated in the
ICRI.
NOTE: The word “Battery” on the end of the holder must be right side up before attempting to
install the battery holder.
FIGURE 4: INTERNAL 9V BATTERY HOLDER
INSTALLED FIGURE 5: 9V ALKALINE BATTERY
AND HOLDER
FIGURE 6: 9V HOLDER WITH BATTERY READY TO BE INSTALLED
IN ICRI-2P REAR COMPARTMENT

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Power the ICRI with the optional C-AT battery pack (8 “AA” cells)
FIGURE 7: BATTERY INSTALLATION (DRAWING)
Hold the batteryhousing securelyin the palm of the hand with metal batteryterminalplate facingup.
Push firmly on the center of the battery terminal plate, until the battery tray is released.
Remove old batteries and discard properly.
Replace the eight "AA” alkaline batteries, observing polarity markings within the tray.
Note: There is a “key” tab on the side of the tray and a “keyway” inside of case.
To reinsert the tray, make sure the tray’s keygoes in the matching slot side of the case. Insert the tray
into the housing from the bottom end of the case, pushing the tray until it “locks” into place
To reinstall the assembled batterypack onto the adapter, align the slots on the top of the batterypack
with the slide rails on the adapter. Slide the batterypackonto the adaptor until it “locks” in place and
the edges of the battery pack are aligned with the edges of the adaptor. (Figure 8)
FIGURE 8: BATTERY CASE
FIGURE 9: BATTERY CASE (INTERIOR)
The battery housing is comprised of two parts: the exterior case and an internal tray.
NO TOOLS ARE NEEDED TO REMOVE THE TRAY AND REPLACE THE BATTERIES.