ICA-202D
TWO CHANNEL
AUDIO INTERCOM AMPLIFIER
OPERATION AND INSTALLATION MANUAL
The ICA-202D is the most versatile Audio Intercom
available; yet it is also the easiest to integrate into
your design. With 20 watts of clean audio power at 25Volts it can do both the Intercom and the Paging
functions in most facilities. The audio quality of the
ICA-202D is superb. Noise and distortion are very low.
Selectable equalization optimizes voice
communications.
There are separate controls for Audio Level, and
Reach. Once set, Automatic Level Control (ALC)
assures the speaker level remains constant over a
wide dynamic input range. The Remote user may
wander throughout the room and still be heard at a
nearly constant level without any operator
adjustments.
A Privacy Tone, to alert the remote party that
someone is listening, is a control option. If selected
the privacy tone will sound every 20 seconds unless
the PTT is pressed.
The logic interface is PLC compatible. Control options
include Remote Operator Listen Level control from
push buttons or Touch Screen, Privacy Tone, Page,
PTT, Mute, Activate, Shut Off, and Call Tone, which is
automatically routed to the operator speaker. A Line
level output for recording is included. A separate Page
line level output provides audio to paging amplifiers if
required. A Page Pre-Announce Tone (jumper option)
is available.
All configuration settings are factory presets; only the
speaker levels are set in the field. The microphone
sensitivity (Reach) is set with 16 position (3dB/Step)
switches; the Speaker Levels are adjusted with Back
Panel Controls.
BENEFITS
Fully Configurable
Easily Repeatable Settings
Digital Microphone Sensitivity
High Quality Audio
Automatic Level Control
External Reach Digital Stepper
Solid State Switch <3mS
Integral Privacy
Selectable Call Tones
Line Level Recording Output
Page Output
20 Watts Audio Power
Design Information:
Dual Channel Universal Audio Intercom Amplifier
Inputs: R.F. and static electricity protected
Outputs: short circuit protected
Frequency Response: 250 Hz to 10KHz
Remote Speaker Output:
Balanced 20-Watts RMS,Into 25 Volt transformer loads
Operator Speaker Output: 3 Watts into 25 Volt speaker
Distortion at Full Rated Output < 1% T.H.D
Microphone Inputs:
1000 Ohms Balanced
-80dBm minimum input for full rated output
Selectable Equalization optimized for voice
communication
Phantom Power: 23 Volts
Color: Light Gray metal enclosure
Power: 24VDC, 2A Power Supply (sold separately)
Unit is intended to be used with class 2 power source
Weight: 3 lbs.
Dimensions: 8.5” W X 1.75” H X 6” D
Mounting: Desk Mount (DM), Rack Mount (RM), Dual Rack
Mount (RM2), and Wall Mount (WM)
Connections: Euro-Style Pluggable Screw Terminals
Tech Works, Inc., 7430 Eastgate Road, Suite 130, Henderson, NV 89011
Direct Line: 702-846-1080 Toll Free: 1-800-813-1080
Web site www.tech4people.com 6/17
How to use this Manual
Those wishing to use one of the standard Configuration Templates, should first read the
Overview, and then proceed to the appropriate Configuration Template for your application.
The Setup and Adjustments section should also be read before installation.
For those users who wish to do their own engineering, all sections may be useful. You may also
wish to contact a Tech Works application engineer for assistance.
Table of Contents
Page
Table of Contents 2
List of Illustrations 3
Overview 4
Functional Diagram and Explanation 5
Specifications 6
Mechanical Details 8
Front Panel Controls and Indicators 9
Rear Panel Connections 10
Simplified Block Diagram 12
Main Board Jumper Options 13
Universal Operator Microphone/Line Input 14
Remote EQ, Equalization 15
Paging Line Level Output 15
Monitoring Line Level Output 15
Call Tone Control 16
Level and Reach Setup and Adjustment 17
Paging Control 18
Integrated Systems Solutions 19
Operator “Reach”, Stepped Control 21
Application Templates 23
Mounting Options 31
Accessories 32
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 2 of 32
List of Illustrations:
Page
Functional Diagram 5
Mechanical Drawings 8
Front View 9
Rear View 10, 11, & 19
Simplified Block Diagram 12
PCB Jumper Locations 13
Audio Chain Block Diagram 17
Integrated System Block Diagram 19
Operator Reach Controls, Stepped Buttons 21
Basic Two Station Template 23
Basic Prison Intercom Setup 24
Basic Prison/PLC Interface Applications 25
Multi-Master Prison/PLC Intercom 26
Fiber Optic Cable Remote Audio 27
VOIP Interface to Remote Prison Cells 28
Dukane / Rauland Replacement 29
Intercom with Recording and Paging 30
ICA-202D-WM1 Single Wall Mount 31
ICA-202D-WM2 Dual Wall Mount 31
ICA-202D-RM1 Rack Mount 31
ICA-202D-RM2 Rack Mount 31
Accessories 32
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 3 of 32
Overview:
The ICA-202D is the audio heart of integrated services communications systems.
The ICA-202D is designed with the System Integrator in mind. The logic interface will function
well in a simple two-station setup. However, its strength is a robust logic interface that is ideal
for remote control from an external source such as a PLC, or computer, making integration into
larger systems easy.
The ICA-202D has jumpers and digital switches for application configuration. Once the settings
are determined, they may be set at the Factory, or in the Integrators Shop. Similar installations
use the same settings, so cloning additional ICA-202D's is simple.
Since all critical settings are predetermined, field setup is very easy
The ICA-202D has an External Stepped Control, which allows the Operator to eavesdrop on
conversations not intended for communication, and easily return to "Normal Communications"
settings. An audio limiter assures that even at the most sensitive settings, the Operator speaker
will never be overloaded.
Configuration Templates support common applications. If there is not a template for your
application, give us a call; we will be pleased to assist you to configure the ICA-202D into your
design.
The audio quality of the ICA-202D is superb. Noise and distortion are very low. Selectable
equalization optimizes voice communications. The Automatic Level Control assures optimum
performance, the audio level remains constant over a wide dynamic input range. The user may
wander throughout the room and still be heard at a nearly constant level.
The ICA-202D features true 25-Volt audio outputs, with excellent features for two-way
communications. 20 Watts of reserve output power allows for All-Call and Paging without the
use of auxiliary amplifiers, greatly simplifying systems design and reducing overall cost.
The ICA-202D features an integrated Call Tone and selectable Privacy Tone. These signals are
adjustable, independent of the audio communications settings.
Line level transformer isolated outputs are provided for Monitoring, or Paging. The Monitoring
Output has each side (Jumper Selectable) of the conversation mixed to a single output ideal for
recording. The Paging Output is only present when the Page Switch is active, eliminating the
need for an external relay.
Modular Construction makes the ICA-202D ideal for integrated designs. The unit is small;
mounting is flexible and easy. Power is from a Universal Plug-in DC power adapter or screw
terminals for connection of any regulated 24VDC-2A Power Supply. All I/O is through Euro-Style
connectorized barrier strips. Unit is intended to use with class 2 power source.
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 4 of 32
ICA-202D Functional Diagram
Each channel has its own audio control section, which provides
Automatic Gain Control, Amplifier Muting, and other functions.
The ICA-202D is configured for Remote Station(s) to be a 25-Volt speaker.
The Operator has a separate microphone and speaker.
The Logic Control section provides for complete control of the audio functions.
A muting input is provided to mask station switchover noise.
Call, Privacy, and Paging Pre-announce Tones are included to simplify the
external systems design.
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 5 of 32
Specifications
General:
Dual Channel Universal Audio Intercom Amplifier
Inputs: R.F. and static electricity protected
Outputs: short circuit protected
Frequency Response: 250 Hz to 10 KHz
20-Watts RMS Sine Wave output, 25 Volts (Balanced)
Distortion at full voltage output < 1% T.H.D.
Power Supply Required: 24 Volts DC @ 2.2 Amps for full rated output
Unit is intended to use with class 2 power source
Operator Microphone/Line Universal Input:
2000 Ohms Balanced
As Microphone -70dBm minimum input for full rated output
Selectable Equalization, 3 settings optimized for voice communication
Phantom Power, short circuit protected (23 Volts, Current limited @ 9 MA)
As Line Input, -25dBm to + 20dBm
Remote Microphone (Also used as the Remote Speaker) Input:
1000 Ohms Balanced
-80dBm minimum input for full rated output
Selectable Equalization, 3 settings optimized for voice communication
Operator Speaker Output:
Balanced
25-Volts, Built out with 66 Ohms
Operator Speaker, 2.25-Watts @ 45 Ohms
Or 25-Volt Speaker tapped at ~2 Watts (See page 15)
Remote Speaker Output:
Balanced
25-Volts, 20-Watts (Maximum)
Automatic Level Control:
Operator and Remote
Greater then 40dB Automatic level accommodation
Fast Attack, <10 mS
Feed Forward Control, no ‘Pumping’
Adjustable 'Reach' (Sensitivity)
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 6 of 32
Paging Line Level Output:
600-Ohm, Balanced, Transformer Coupled
Processed by Automatic Level Control, for ~0dBm output
Operator Microphone, Keyed by Page Switch
(Recording) Line Level Output:
600-Ohm, Balanced, Transformer Coupled
Processed by Automatic Level Control, for ~0dBm output
Active Channel, Operator Microphone, and/or Remote Speaker-Microphone
Call Tone:
Uses Operator Speaker
Selectable, Edge or Level Triggered
Latched, of Momentary Control
Adjustable Level
Selectable Tone Character: Constant; Intermittent; Warble
Privacy Alert Tone:
Uses Remote Speaker
Enabled by Switch Input
Two hundred-millisecond tone burst
Privacy Alert Tone on Activation
Periodic Privacy Alert Tone, if Eavesdropping
Adjustable Level
Paging Pre-Announce Alert Tone:
Uses Paging Line Level Output
Selectable: Enable, Disable
Two hundred-millisecond tone burst
Keyed when Paging Switch is activated
Adjustable Level
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 7 of 32
Mechanical and Electrical
1U, Half Rack, 8.60” X 1.75” X 6.00”
Mounting Options: Table-Top; Under Counter; Rack
Approximately 3 lbs
Modular aluminum and steel enclosure
Euro-Style connectorized barrier strips
24 Volts D.C. 24-Watts Maximum, 50 Watts
Unit is intended to use with class 2 power source
LEFT SIDE FRONT RIGHT SIDE
RACK MOUNT
RM-1
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 8 of 32
FRONT PANEL CONTROLS AND INDICATORS
ICA-202D
DUAL CHANNEL
INTERCOM AMPLIFIER
POWER
ACTIVE
OPERATOR
REACH PAGE
Front Panel Audio Controls:
Operator ‘Reach’ (Remote Microphone Gain)
16 Position Switch, 3dB/step
Sets preamplifier sensitivity for Normal Microphone input level
Remote ‘Reach’ (Operator Microphone Gain)
16 Position Switch, 3dB/step
Sets preamplifier sensitivity for Normal Microphone input level
Front Panel Indicators:
Power
Off, when no power
Green when operating normally
Operator Active
Green when Operator Listening
Operator Reach (Remote Microphone Level)
Off when Microphone not Active
Green when Microphone Active
Flashes Red when Audio is Present (Threshold of Limiting)
Page (From Operator Microphone)
Green when Operator is 'Paging'
Remote Active
Green when Remote Listening
Remote Reach (Operator Microphone Level)
Off when Microphone not Active
Green when Microphone Active
Flashes Red when Audio is Present (Threshold of Limiting)
THRES
ACTIVE
REMOTE
REACH
THRES
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 9 of 32
REAR PANEL CONNECTIONS
REM SPKR (+)
REM SPKR (-)
OP MIC (+)
COMMON
Tech Works * YORBA LINDA * CA * 1-800-813-1080 * WWW. TECH4PEOPLE.COM
OP SPKR (+)
OP MIC (-)
COMMON
Logic Control Inputs:
Common sensing for Switches, or PLC
Privacy Tone Enable Sw - Active low, momentary, or sustained
Enables Privacy Tone burst temporarily forcing the Remote Speaker on
The Privacy Tone is initiated when the Intercom is activated
Or when the Intercom is un-muted
Activation from “Push to Talk” or "Page" does not sound the Privacy Tone
The tone burst also sounds every 18-20 seconds if there is continuous listening
Page Sw - Active low (Same functions as PTT)
Causes "Page Out output to carry the Operator Microphone audio signal
This Page Switch Input is diode isolated, so a relay powered +24Volts may also connect
to the same point (The Relay Coil must also have an Anti-Fly Wheeling Diode)
Push to Talk (PTT) Sw - Active Low, momentary or sustained
Forces the Remote speaker on while depressed (Sustained)
Cancels “Call Tone” (Jumper Option)
Activates the Intercom if Inactive
Does not cause the Privacy Tone to be sent
Mute Sw (Highest Priority) – Active Low, momentary, or sustained
Causes both channels to mute
Does not change the state Active or Call Flip-Flops
Sounds Privacy Tone when un-muting (Jumper Option)
Activate Sw - Active Low, momentary, or sustained
Overrides “Shut Off”
Quiescent state, Operator on
Cancels Call Tone (Jumper Option)
Cause Privacy Tone to be sent (Jumper Option)
Shutoff Sw (Lowest Priority) - Active low, momentary, or sustained, see below
Disables both Operator and Remote Speakers
(Overridden by “Activate”, “Push to Talk”, or "Page")
Call Sw - Active low, momentary, or sustained
Causes “Call Tone” to be sent to the Operator speaker
ACTIVE
OPERATOR
LEVEL
ICA-202D
ACTIVATE SW
PAGE OUT (+)
LINE OUT (+)
ACTIVE
PAGE OUT (-)
LINE OUT (-)
P-TONE SW
COMMON
PAGE SW
PTT SW
SHUT OFF SW
MUTE SW
COMMON
CALL SW
CHASSIS
+24VDC
POWER
24VDC-2A
REMOTE
OP SPKR (-)
OP EXT DN
OP EXT UP
COMMON
LEVEL
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 10 of 32
ACTIVE
OPERATOR
LEVEL
ACTIVE
REMOTE
REM SPKR (+)
REM SPKR (-)
OP MIC (+)
COMMON
Tech Works * YORBA LINDA * CA * 1- 800-813-1080 * WWW.TECH4PEO PLE.COM
OP SPKR (+)
OP SPKR (-)
OP EXT DN
OP MIC (-)
COMMON
OP EXT UP
COMMON
LEVEL
Back Panel Audio Controls:
Remote Speaker ‘Level’
Control TrimPot; set for desired listening level
Operator Speaker ‘Level’
Control TrimPot; set for desired listening level
Back Panel Indicators:
Power
Off, when no power
Green when operating normally
Remote ‘Active’, Green when Remote Listening (Operator Talking)
Operator ‘Active’, Green when Operator Listening
External Operator (Extended) Reach Control:
Two Active low, momentary, (Or sustained) inputs
16 Position stepped control, with "UP" and "DN" pulsed inputs
"UP" extends "Reach" (Increases Microphone Sensitivity above Normal level)
"DN" returns "Reach" toward Normal sensitivity
(If not used, the ICA-202D powers up to the "Normal" setting)
ICA-202D
ACTIVATE SW
PAGE OUT (+)
LINE OUT (+)
PAGE OUT (-)
LINE OUT (-)
P-TONE SW
COMMON
PAGE SW
PTT SW
SHUT OFF SW
MUTE SW
COMMON
CALL SW
CHASSIS
+24VDC
POWER
24VDC-2A
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 11 of 32
Simplified Block Diagram
OPERATOR
MICROPHONE
OR
LINE INPUT
A-TONE_ON
TALK
OP_REACH_UP_SW
OP_REACH_DWN_SW
REMOTE SPEAKER
INPUT/OUTPUT
PRE-AMP
AND
PRE-AMP
LISTEN
8
9
A
7
O
6
MIC/L
E
2
F
0
1
AIN
G
OPERATOR
ALC
PAGE
8
9
A
7
EM
R
6
IC
M
E
2
F
1
0
AIN
G
REMOTE
ALC
P
INE
A_TONE
M
UTEREMOTESPEAKER
W
HILEPAGING
TALK
C_TONE
SUM
“REMOTE
LISTEN”
LEVEL”
AND
SUM
“OPERATOR
LISTEN”
LEVEL”
PWR-AMP
PWR-AMP
OP_SOURCE
REMOTE SPEAKER
INPUT/OUTPUT
REM_SOURCE
OPERATOR SPEAKER
OP_SOURCE
PAGE
OP_SOURCE
LISTEN
REM_SOURCE
TALK
PTT
ACTIVE
PTONE_ENB_SW
CALL_SW
PTT
ACTIVE_F-F_ON
MUTE_SW
SHUTOFF_SW
ACTIVATE_SW
PTT
ACTIVE+CALL
A-TONE_ON
PTT_SW
PAGE
MUX
LINE
OUT
MUX
LINE
OUT
MUX
OR
EDGE
LEVEL
CALL TONE
CONTROL
LATCH
CANCEL
NON-LATCH
OR
OR
~200MS
AMP
SUM
~18 S
ECONDS
R
EPEATING
R
ESET
PRIVACY
TONE TIMER
PAGE
ESET
R
ACTIVE
ET
S
F-F
OR
OR
P
AGEPRE-ANNOUCETONE
A-TONE
AND
ACTIVE_F-F_ON
CALL_TONE_ON
NABLE
E
CHANGOVER
SEQUENCER
ALK
T
, 10MS
ETURN FROM TALK
R
ALK
T
LISTEN
ALERT TONE GENERATOR
0dB, HIGH
-6dB, MEDIUM
-12dB, LOW
O/S
~200MS
CALL TONE GENERATOR
WARBLE
INTERMITTENT
CONTINUOUS
0dB, HIGH
-6dB, MEDIUM
-12dB, LOW
OR
, 200MS
PAGE OUTPUT
LINE OUTPUT
A_TONE
A-TONE_ON
CALL_TONE
CALL_TONE_ON
ACTIVE
ACTIVE+CALL
LISTEN
TALK
PAGE_SW
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 12 of 32
PTT
PAGE
Jumper Options (Refer to the Block Diagram for Jumper Function)
ICA-202D-3 PCB Jumper Locations
Factory Default Positions Shown
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 13 of 32
Universal Operator Microphone/Line Input
This input can accommodate a wide range Microphone or Line inputs
The Microphone Sensitivity is adjustable with the 16 Position Rotary Switch
With ~3db/Step for a 45 dB range
By using the Gain Switch, and Jumper options the total Range is -65dB to +20dB
The Signal is processed with an ALC, to assure the Output never exceeds 0dBm
Indicators allow the Microphone Gain to be adjusted to the optimal level
Phantom Power:
Terminating Resistors referenced to +23Volts, Current limited @ 7MA , ON
Terminating Resistors connected to Common, OFF
Gain Range:
Input Gain reduced 15dB, LO
Full Gain, HI
EQ Jumpers (Two):
Both Jumpers, upper position, lowest frequency Roll-off
(Used with most gooseneck and Hanging microphones)
Only MED CUT Jumper Upper Position, Medium frequency Roll-off
(Used with most flush mounted microphones)
Only HI CUT Jumper Upper Position, Highest frequency Roll-off
(Used with most Speakers used as a microphone)
Both Jumpers Lower Position, (Line Input)
~170Hz Roll-off, Sensitivity reduced to –25dBm input for full Output
Notes:
If the Limiting occurs with the Stepped Gain Control on ”0”, “1” or ”2”
There is insufficient Headroom, use the “LO” Gain Range
For a Balanced Line Level Input the LO Gain Position is also used
The Accommodation Range for full output is ~ -10dBm to +20dBm (With 10dB of Headroom)
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 14 of 32
Remote EQ, Equalization:
EQ Jumpers (Two):
Both Jumpers, upper position, lowest frequency Roll-off
(Used with most gooseneck and Hanging microphones)
Only MED CUT Jumper Upper Position, Medium frequency Roll-off
(Used with most flush mounted microphones)
Only HI CUT Jumper Upper Position, Highest frequency Roll-off
(Used with most Speakers used as a microphone)
Both Jumpers Lower Position, (Line Input)
~170Hz Roll-off, Sensitivity reduced to –25dBm input for full Output
Paging Line Level Output:
The Operator Microphone Output is routed to the Paging Line Level Output
when the Page Switch is active
The Internal Remote Amplifier may be active or muted during a Page
Remote Speaker Carries Page Un-Mute
Remote Speaker Muted during Page Muted
A 200mS Pre-Announce Tone burst may precede the Page
Send Pre-Announce Tone ON
No Pre-Announce Tone OFF
Pre-Announce Tone Level
0dBm (Same level as Communications) HI
-6dB MED
-12dB LO
Monitoring Line Level Output:
Jumpers to select the Signal Sources
Operator Speaker sources, Remote Microphone and Call Tone
Routed ON
Not Routed OFF
Remote Speaker sources, Operator Microphone, Privacy, and Paging Pre-Announce,
Tones
Routed ON
Not Routed OFF
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 15 of 32
Call Tone Control
The three sets of Call Tone jumpers accommodate many control schemes
The Call Tone sounds through the Operator Speaker
The Call Switch may be internally latched (Jumper Option) using the internal register
Or the Call signal may be controlled by an External Controller (Jumper Option)
When the external controller is used the state of the Intercom is ignored, and the Call
signal sounds whenever the 'Call Switch' is low (The Jumper selection for Level
Triggered is used)
If the Call Switch request is latched (Jumper Option),
only a momentary closure of the Call switch is required.
When the Intercom becomes Active (Jumper Option), the Call Tone is canceled.
If the Call Switch is pressed while the Intercom is Active it is ignored.
When the PTT Switch is pressed (Jumper Option), the Call Tone is canceled.
If the Call Switch is pressed while the Intercom is Active the Call Tone will sound.
When the Call Switch is ‘edge triggered’ (Jumper Option) the normal setting, the Call
Tone switch must be released and re-pushed while the intercom is inactive (Jumper
Option) to cause a new call tone to sound. This option is helpful if the Remote Station
user is in a panic, and will not release the Call Switch.
When the Call Switch is ‘level triggered’ (Jumper Option), the Call Tone will sound
whenever the Call Tone switch is closed and the intercom becomes inactive (Jumper
Option)
Call Tone Configuration Jumpers:
Edge Triggered Call Tone ON
Level Triggered Call Tone OFF
Momentary control by external PLC, Edge Trigger=OFF Non-Latched
Use the internal Registers to sustain the call Latched
When Internal Register Sustains Call (No affect in Non-Latched)
Call Cancelled by ACTIVE State
Call Cancelled by PTT Switch
Call Tone Level
0dBm (Same level as Communications) HI
-6dB MED
-12dB LO Setup Adjustments
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 16 of 32
Level and Reach Setup and Adjustment:
ICA-202D Audio Chain Block Diagram
The ICA-202D has two adjustments for the audio, for each Channel, ‘Reach’ and ‘Level’.
Once they are setup, these settings should never need to be adjusted by the user.
The Limiter Threshold is fixed; no matter how great the input level becomes the output level will
not exceed the ‘Limiting Level’ (0dBm)
The ‘Reach’ Control sets the microphone gain. The greater the ‘Reach’ the fainter the input level
that can be heard, and of course the greater the background noise!
The ‘Reach’ is set for normal communications, to be approximately 6 dB into limiting. This
allows the user to move throughout the room, while maintaining an almost constant output level
from the limiter
Setup is accomplished with the use of an Assistant (best) or a Radio, or other sound source.
The sound source should be set at the normal expected level, and position, of the User
Setup each direction, one at a time:
For both Channels, (If the External Reach Control is not being used):
First setup the "Reach" (Pre-limiter, Microphone Gain)
Set the Reach Control to the minimum level, (Red dot, at 6 O'clock position).
Then advance the control CW, one step at a time, until the "Threshold" indicator just flashes.
Then advance control two more clicks (6dB into limiting)
Then set the (Post-limiter, Power Amplifier) Speaker "Level"
Advance the "Level" control CW for the desired listening level
It is not recommended setting the level control into the red dots
If a greater output level is desired, a higher wattage speaker tap is recommend
If the "External Reach Control" is used, it must first be set to the "Normal" Setting
This can be done by Power Cycling the ICA-202D, or by pressing (And Holding) the
"Down/Normal" Switch for approximately 4 Seconds
Then adjust the "Operator Reach" (Pre-limiter, Microphone Gain to the "Normal" setting)
Set the Reach Control to the minimum level, (Red dot, at 6 O'clock position).
Then advance the control CW, one step at a time, until the "Threshold" indicator just flashes
Do not advance the control beyond that point
Next, set the (Post-limiter, Power Amplifier) Speaker "Level"
Advance the "Level" control CW for the desired listening level
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 17 of 32
Call Tone Level:
The Call Tone signal comes through the Operator’s speaker.
This adjustment should be made after Communications levels are set.
The Call Tone level has three Steps, "HI", "MED", "LO"
Setup is accomplished by activating the ‘Call Tone’ by pushing the ‘Call’ Switch.
Select a suitable Call Tone level.
Privacy Tone Level:
(Note: the Privacy and Page Preannounce Tones share the same "Level" setting)
The Privacy Tone signal comes through the Remote speaker.
This adjustment should be made after Communications levels are set.
The Privacy Tone level has three Steps, "HI", "MED", "LO"
(The Privacy Tone must be enabled, "P-TONE-ENABLE" tied to COMMON)
Setup is accomplished by performing a sequence that causes a Privacy Tone
First push and release the ‘Shut Off’ Switch, then push the ‘Activate/On’ Switch.
The Privacy Tone will sound briefly. If your system does not have a push to ‘Activate/On’
Switch the Privacy Tone will sound briefly every 18 seconds when the Intercom is active.
Select a suitable Privacy Tone level.
Page Pre-announce Tone Level:
(Note: the Privacy and Page Preannounce Tones share the same "Level" setting)
The Page Pre-announce Tone comes through the Page Line Level Output
The Privacy Tone level has three Steps, "HI", "MED", "LO"
The Page Preannounce Tone, (Jumper Option) must be "ON"
Press the Page Switch; the Preannounce tone will sound
Select a suitable Page Pre-announce Tone Level
Paging Control:
Paging is Handled similarly to PTT, with additional Jumper Options:
There is a 200ms Pre-Announce Tone ON
There is No Pre-Announce Tone OFF
The (Internal) Remote Speaker Amplifier is Disabled during a Page MUTE
The (Internal) Remote Speaker Amplifier is Enabled during a Page UNMUTE
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 18 of 32
Integrated System Solutions
OPERATOR
MICROPHONE
OPERATOR
SPEAKER
PRE-AMP
CALL SW
SHUT OFF SW
ACTIVATE SW
MUTE SW
PTT SW
PAGE SW
P-TONE ENABLE SW
PWR-AMP
AUDIO
CONTROL
CONTROL
LOGIC
AUDIO
CONTROL
PWR-AMP
PRE-AMP
REMOTE
SPEAKER/
MICROPHONE
The ICA-202D provides a complete audio and logical interface for an integrated systems
solution. In most applications the Remote Speaker is accessed through a Switching Matrix,
controlled by a computer, or PLC.
ACTIVE
OPERATOR
LEVEL
ICA-202D
ACTIVATE SW
PAGE OUT (+)
LINE OUT (+)
ACTIVE
PAGE OUT (-)
LINE OUT (-)
P-TONE SW
COMMON
PAGE SW
PTT SW
SHUT OFF SW
MUTE SW
COMMON
CALL SW
CHASSIS
+24VDC
POWER
REMOTE
REM SPKR (+)
REM SPKR (-)
OP MIC (+)
COMMON
OP SPKR (+)
OP SPKR (-)
OP EXT DN
OP MIC (-)
COMMON
OP EXT UP
COMMON
LEVEL
Tech Works * YORBA LINDA * CA * 1- 800-813-1080 * WWW.TECH4PEO PLE.COM
24VDC-2A
The Operator microphone may be either a Dynamic, or Condenser type.
The Microphone is balanced and may be Phantom Powered.
If a flush mounted microphone is required, the Tech Works HM-1 is recommended
The Operator Speaker output is optimized for 100-Ohm voice coil speakers.
The Maximum Output is 25-Volts. Internally, the output is built out with a 66-Ohm resistance.
A 45-Ohm, 2.2-Watts voice coil or higher impedance is acceptable.
A 25-Volt speaker tapped at 5 watts or less is also acceptable.
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 19 of 32
The Remote Speaker(s) should be 25 Volt units, tapped at 2.5 Watts or less.
Since the remote speakers are also used as microphones, all remote speakers on the system
that are used for two-way communications should Similar, and be tapped the same.
It is assumed that two-way communications only takes place to one remote speaker at a time.
Speakers that are only used for paging may be tapped to any power level up to 20 Watts. It is
important that in any paging application that the total load not exceed 20 Watts.
The logic interface is ideal for external control with features designed to ease system
integration.
The ICA-202D has two Flip-Flops, one for Activation, and the other for the Call function. These
Flip-Flops are configured so that the external Control Inputs can override the internal states.
If the Shut Off input is tied to Common, Activation follows the Active input, which is ideal for
external use with an external controller
The internal Call Flip-Flop may be used, or bypassed for use by an external controller.
If the internal Call Flip-Flop is bypassed, the Call Switch input should also be set to
non-edge triggered. The Call Switch input is then sustained to cause the Call Tone to Sound.
When the Internal Call Tone Flip-Flop is used several control variations are possible.
The Call input may be configured as Edge Triggered or Level Triggered. For PLC operation this
determines whether the interface will respond to a Call Input that is pending when the Intercom
becomes inactive. In some applications any pending call should be sounded immediately. In
some systems the operator may be switching from one Station to another and not want to be
annoyed by pending calls, just new calls, when the Intercom is inactive.
Calls may either be cancelled by the Intercom being Active, or only by pressing PTT.
When the Active jumper option is chosen, a Call is ignored if the Operator is
Listening or Talking.
When PTT jumper option is used, the Call Tone will sound even if the Operator is listening.
The Call can only be cancelled by the Operator acknowledging the Call, by talking to the
Remote Station.
The ICA-202D has a separate Mute input. The Mute Input affects both channels of the intercom;
however, it does not change the activation state. The mute does affect the
Call Flip-Flop. Mute has the highest priority. When muted, all signals to both Speakers are
squelched. The mute signal is necessary on some systems to allow the Remote Speaker to
switch to a new Station without causing pops in the Operator Speaker. Mute would momentarily
be employed during switching while ‘Listening’ or returning to the ‘Listening’ state.
The PTT (Push to Talk) input activates the Intercom. If the Shut Off input is tied to common,
then PTT only activates the intercom while the signal is asserted.
The Page input has the same functionality as the PTT input, with added features.
The internal Remote Power Amplifier may be enabled, or disabled during a page.
The Operator Microphone is keyed to the Line Level Output.
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 20 of 32
The ICA-202D has a Privacy Tone (Enabled by a Back Panel contact). The philosophy of the
Privacy tone is to alert the Remote Station that the Operator is listening. The Privacy Tone is a
200mS, 1000Hz burst.
There are three conditions that cause the Privacy Tone to be sounded:
1. When the Intercom is activated by the Activate Input (Not PTT)
2. When returning from the Muted State
(The assumption being that a new Station has been selected)
3. After ~18-20 seconds of continuous listening
The ICA-202D has two ‘Line Level Outputs’ with a nominal level of 0dBm.
Paging, the Operator Microphone keyed by the Page Switch input (See above)
"Paging" may be preceded by a Preannounce Tone (Jumper Option)
"Paging" may also be routed to the Remote Speaker (Jumper Option)
Monitoring, the Operator or Remote Listening Audio (Jumper Selectable), whichever is
active,
Also, if enabled and present, Call, Privacy, and Page Tone
Operator “Reach”, Stepped Control, for extended "Reach" for listening to very low level audio
A
6
E
The Remote Microphone Gain is affected by two controls, the Rotary
"Operator Reach Switch", and the "External Stepped Control"
Each control has 16 positions
The 'Initial (Minimum) Gain’, is set by the Rotary Switch
and may be increased in 3dB steps to 45dB
The Remaining Gain Range is controlled by the External Stepped Gain Control
The External Control can always achieve Maximum Gain “Reach”,
The External Reach Control…divides the Remaining Gain Range into 16 evenly divided levels
When the Unit is Powered On, the External Control is set to Minimum
If no External Stepped Gain Control is used…
Both the “Operator” and “Remote” Reach Controls work the same way
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 21 of 32
The Reach is stepped with external controls;
Each momentary switch closure moves the setting by one step
There are 16 Levels, with 15 Steps in between
The "Up" control increases the "Reach" (Microphone Sensitivity) above the "Normal"
setting
The "Down" control decreases the "Reach"
The "Down" control has Auto-Repeat (If held for more than 1/2 second), and will return
to the "Normal" setting (One step at a time) at approximately 5 Steps/second
For PLC Applications:
The Quiescent input is an Open Circuit (Pulled internally to +6 Volts)
One Input or the other should be momentarily pulled to Common, never both at the same time
The Active (Low level) should be held 100 to 250 mS
The rest (Open Circuit) between pulses should be greater than 200mS
The "Down" Input has an Auto-Repeat function, so the "Reach" may be reset to the "Normal"
setting by holding the "Down" input Active (Low level) for 4 Seconds.
There are three configurations of these controls that have practical applications:
1. The "External Stepped Reach Control" is not used
When the ICA-202D-3 first powers up, the "External Extended Reach Control" is set to
"minimum" gain of 0dB
This essentially puts the "External Stepped Control" out of the circuit
Therefore the front panel Rotary "Reach Control" has the entire range of 45dB; 3dB/step
2. Both the "External Stepped Reach Control" and the Rotary "Reach" Switch are used
The standard setup is to set the Rotary "Reach Switch" to a "normal setting", the onset
of limiting for a 'normal' speaking level at the Remote Station
With the "External (Extended) Stepped Reach Control", set to "minimum" of 0dB
As the "External Reach Control" ("minimum" gain) is advanced,
the remainder of the 45dB of gain is divided into the 16 steps
As an example, consider a setup where the Rotary Switch is set to "12 O'clock", which
represents a microphone gain of ~24dB
The remainder of the gain (24dB) is controlled by the "Extended External Stepped
Reach Control" with 1.5dB/step
In this configuration, the Rotary Switch should never be set past the 3 O'clock position
Otherwise, very little control is available to the External Control.
3. Only the "External Stepped Reach Control" is used by an external controller PLC
The setting of the Rotary "Reach" Switch is set to "0", (Red dot, at 6 O'clock position)
Then the "External Stepped Reach Control" has the entire range, 45dB; 3dB/step
Under most conditions it is recommended when using a PLC, setup '2' is used
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 22 of 32
Application Templates
Basic Two-Station Intercom Setup
The application templates in this section show some of the common uses of the
ICA-202D. Below is the basic wiring of the components used for a simple two station
Push To Talk Intercom.
OPERATOR
PAGE OUT (+)
PAGE OUT (-)
LINE OUT (+)
LEVEL
LEVEL
ACTIVE
LINE OUT (-)
ACTIVE
P-TONE SW
COMMON
PAGE SW
PTT SW
TALK
REMOTE
REMOTE
REM SPKR (+)
REM SPKR (-)
COMMON
OP SPKR (+)
OP SPKR (-)
OP EXT DN
OP MIC (+)
OP MIC (-)
COMMON
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OP EXT UP
COMMON
ON
OFF
CALL
OPERATOR
Below are the internal jumper settings for the basic intercom functions
ICA-202D
ACTIVATE SW
SHUT OFF SW
MUTE SW
COMMON
CALL SW
CHASSIS
+24VDC
POWER
24VDC-2A
LO HI
CALL TONE
CANCEL
ACTIVE
PTT
EDGE TRIGGER
OFF
ON
NON
LATCH
LATCH
Tech Works
ICA-202
REV- D- 3
PRE-ANNOUNCE
OFF
MUTE
UN-MUTE
WARBLE
INTERMIT
CONTIN
PAGE TONE
ON
INTERNAL
AMP PAGE
CALL TONE
OPTIONS
LINE OUT
OP REM
OFF ON
CALL TONE LEVEL
ALERT TONE LEVEL
LO -12dB
MED -6dB
HI 0dB
LO -12dB
HI 0dB
GAIN
HI CUT
MED -6dB
POWER
OFF ON
PHANTOM
HI CUT
OP EQ
REM EQ
MED CUT
MED CUT
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 23 of 32
Basic Prison Intercom Setup
Below is the basic wiring of the components used for a simple Prison Guard Intercom.
The External Reach Control allows the Guard to adjust the Sensitivity to hear low level
conversations . The stepped control is pulsed to "UP" to increase sensitivty, or step "DOWN" to
reduce the sensitivity. Holding the "Down" control will cause it to auto-increment to the PresetValue
OPERATOR
REMOTE
ACTIVATE SW
REM SPKR (+)
REM SPKR (-)
COMMON
OP SPKR (-)
OP SPKR (+)
OP EXT DN
OP MIC (-)
OP MIC (+)
COMMON
OP EXT UP
COMMON
LEVEL
LEVEL
ACTIVE
PAGE OUT (+)
PAGE OUT (-)
LINE OUT (+)
LINE OUT (-)
ACTIVE
P-TONE SW
COMMON
SHUT OFF SW
MUTE SW
PAGE SW
CALL SW
PTT SW
ICA-202D
COMMON
CHASSIS
+24VDC
POWER
Tech Works * YORBA LINDA * CA * 1-800-813-1080 * WWW.TECH4PEOPLE.COM
EXTERNAL
STEPPER
CONTROL
CONSOLE
SPEAKER
25V OR 45 OHM
CONSOLE MIC
TECH WORKS
HM-1
OPERATORREMOTE
PUSH TO TALK SWITCH
EXTERNAL PAGE
Tech Works
DODC-2
ALL PAGE
SWITCH
AMPLIFIER
IF REQUIRED
TECH WORKS
PA-402
Below are the internal jumper settings for the simple Prison Guard functions
24VDC-2A
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 24 of 32
Basic PLC Prison Intercom Setup
Below is the wiring of the components used for a Basic PLC Prison Guard Intercom.
OPERATOR
REMOTE
ACTIVATE SW
REM SPKR (+)
REM SPKR (-)
COMMON
OP SPKR (+)
OP SPKR (-)
OP EXT DN
OP MIC (+)
OP MIC (-)
COMMON
OP EXT UP
COMMON
LEVEL
LEVEL
ACTIVE
PAGE OUT (+)
PAGE OUT (-)
LINE OUT (+)
LINE OUT (-)
ACTIVE
P-TONE SW
COMMON
SHUT OFF SW
MUTE SW
PAGE SW
CALL SW
PTT SW
ICA-202D
COMMON
CHASSIS
+24VDC
POWER
REMOTE
CALL 1
VPSS
REMOTE
CALL 2
REMOTE
CALL X
Tech Works ICR-116
SWITCHING MATRIX
Tech Works * YORBA LINDA * CA * 1-800-813-1080 * WWW.TECH4PEOPLE.COM
OPERATOR
CONSOLE
PTT
DOCD-1 or DODC-2
PAGE
24 CONDUCTOR RIBBON CABLE RC-24-X
24 CONDUCTOR RIBBON CABLE RC-24-X
EXTERNAL PAGING
AMPLIFIER PA-402
(IF REQUIRED FOR
ADDED POWER)
CALL-IN
RELAY SELECT
P.L.C.
BY
OTHERS
24VDC-2A
Below are the internal jumper settings for the ICA-202D when used with a PLC.
Note the Edge Trigered Call Tone is set to Continuos and the Internal Amp Page is set to Mute
on All Page. This assumes the use of an external page amplifier.
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 25 of 32
Multi Master Prison Intercom Setup
Below is the wiring of the components used for a Multi Master Prison Guard Intercom.
OPERATOR
REM SPKR (+)
REM SPKR (-)
OP SPKR (+)
OP SPKR (-)
OP EXT DN
OP MIC (+)
OP EXT UP
OP MIC (-)
COMMON
COMMON
COMMON
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OPERATOR
REMOTE
LEVEL
ACTIVE
PAGE OUT (-)
PAGE OUT (+)
LINE OUT (+)
P-TONE SW
LINE OUT (-)
COMMON
MUTE SW
PAGE SW
LEVEL
ACTIVE
PTT SW
ICA-202D
ACTIVATE SW
SHUT OFF SW
COMMON
CHASSIS
CALL SW
+24VDC
POWER
24VDC-2A
REM SPKR (+)
REM SPKR (-)
OP MIC (+)
OP MIC (-)
COMMON
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REMOTE
OP SPKR (-)
OP SPKR (+)
OP EXT DN
OP EXT UP
COMMON
COMMON
LINE OUT (+)
LINE OUT (-)
LEVEL
LEVEL
ACTIVE
ACTIVE
ACTIVATE SW
PAGE OUT (+)
SHUT OFF SW
PAGE OUT (-)
P-TONE SW
COMMON
COMMON
PAGE SW
MUTE SW
CALL SW
+24VDC
PTT SW
ICA-202D
CHASSIS
POWER
24VDC-2A
OPERATOR
CONSOLE
P.L.C.
OPERATOR
CONSOLE
P.L.C.
DATA NETWORK OR SERVER
PLC
AUDIO ROUTING MATRIX
Tech Works ICR-44
IF LOAD
PAGE
IS
LESS THAN
20 WATTS
REMOTE
CALL X
USE
ICA-202
INTERNAL
AMP
INTERCOM
REMOTE
CALL 1
PLC
RELAY SWITCHING MATRIX
Tech Works ICR-116
REMOTE
CALL 2
REMOTE
CALL 1
PLC
INTERCOM
RELAY SWITCHING MATRIX
Tech Works ICR-116
REMOTE
CALL 2
PAGE
REMOTE
CALL X
TECH
WORKS
PA-402
PAGE AMPS
AS
REQUIRED
REMOTE
CALL 1
PLC
RELAY SWITCHING MATRIX
Tech Works ICR-116
REMOTE
CALL 2
PAGE
PAGE AMPS
REMOTE
CALL X
ASSIGNED
TO EACH
SPEAKER
LOAD
INTERCOM
REMOTE
CALL 1
PLC
RELAY SWITCHING MATRIX
Tech Works ICR-116
REMOTE
CALL 2
Below are the internal jumper settings for the ICA-202D when used with a PLC.
Note the Edge Trigered Call Tone is set to Continuous and the Internal Amp Page
is set to Mute on All Page. This assumes the use of an external page amplifier.
PAGE
INTERCOM
REMOTE
CALL X
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 26 of 32
Fiber Optic Cable Remote Audio
Sometimes the Prison wants to have the guard Operator or monitoring station mile away from
the prison cells. Tech Works can help by making the audio interface to a fiber optic cable
system easy.
By using ICA-202D to power and control the Operator location and a second ICA-202D at the
Prison Cell location the integration is done with off the shelf product in a simple installation. As
shown above the Operator can talk to both Local Speakers and Remote Speakers
To interface the Operator Location to the Fiber Transceiver, an interface network is required.
Below is a detail of how to build an interface for the ICA-202D Remote Speaker connection to a
Line Level Fiber Transceiver using off the shelf components.
Below are the internal jumper settings for the interface shown above.
ICA-202D Operator Unit Jumpers ICA-202D Remote Unit Jumpers
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 27 of 32
VOIP Interface to Remote Prison Cells
If you want to go Voice Over IP and do a full integration to your PC control system and run the
whole thing over Ethernet you can do it using the ICA-202D
OPERATOR
LOCATION
ALC
LINE
OUT
INTERFACE
BARIX VIOP
OP MIC
IN
CONTROL
PCL
TECH WORKS ICA-202D INTERCOM AMPLIFIER
ALC
MICROPHONE
SPEAKER
ETHERNET
TOUCH
SCREEN
ETHERNET
PC
IP ROUTER
ETHERNET
ICA-202D MUST BE LOCATED NEAR THE
STATION SELECT RELAYS
Below are the internal jumper settings for the interface shown above.
STATION SELECT
PRISON
CELL
RELAYS
SPEAKERS
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 28 of 32
Replacing an old Dukane or Rauland Amplifier
Below is the wiring when replacing an old Dukane or Rauland Prison Guard Intercom. Because
some of these products had an internal “Page” relay that is not included with the Tech Works
ICA-202D an external relay may be requied to route the output of the Page Amplifier.
OPERATOR
REM SPKR (+)
REM SPKR (-)
OP SPKR (-)
OP SPKR (+)
OP EXT DN
OP MIC (-)
OP MIC (+)
COMMON
COMMON
COMMON
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PUSH TO TALK
SWITCH
OP EXT UP
REMOTE
LEVEL
CONSOLE
SPEAKER
CONSOLE
MIC
ACTIVATE SW
PAGE OUT (+)
PAGE OUT (-)
LINE OUT (+)
LINE OUT (-)
LEVEL
ACTIVE
ACTIVE
SHUT OFF SW
P-TONE SW
COMMON
MUTE SW
PAGE SW
PTT SW
ICA-202D
COMMON
CHASSIS
CALL SW
+24VDC
POWER
24VDC-2A
24VDC
ACTIVATE
TO PLC
COMMON
PAGE
PAGE
AMP
K
Below are the internal jumper settings for the interface shown above.
LO HI
GAIN
HI CUT
OP EQ
OFF ON
"C" BUSS
POWER
OFF ON
PHANTOM
HI CUT
REM EQ
MED CUT
MED CUT
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 29 of 32
Intercom with Recording and Paging
Below is a basic wiring diagram for intercom with a logging recorder and external paging
amplifer.
OPERATOR
REMOTE
ACTIVATE SW
REM SPKR (+)
REM SPKR (-)
COMMON
OP SPKR (+)
OP SPKR (-)
OP EXT DN
OP MIC (+)
OP MIC (-)
COMMON
OP EXT UP
COMMON
LEVEL
LEVEL
ACTIVE
PAGE OUT (+)
PAGE OUT (-)
LINE OUT (+)
LINE OUT (-)
ACTIVE
P-TONE SW
COMMON
PAGE SW
SHUT OFF SW
MUTE SW
CALL SW
PTT SW
+24VDC
ICA-202D
COMMON
CHASSIS
POWER
Tech Works * YORBA LINDA * CA * 1-800-813-1080 * WWW.TECH4PEOPLE.COM
REMOTE
CALL
Below are the internal jumper settings.
OPERATOR
TALK
ON
OFF
PAGE
24VDC-2A
PA-402
EXTERNAL
PAGING
AMPLIFIER
LOGGING RECORDER
As shown, both the Operator, and Remote are Recorded. Many other configurations are
available by combining this application with applications such as PLC control and others.
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 30 of 32
Mounting Options
Standard Desk Mount
ICA-202D
DUAL CHANNEL
INTERCOM AMPLIFIER
POWER
OPERATOR
ACTIVE
THRESREACH PAGE ACTIVE REACH
REMOTE
THRES
ICA-202D-DM
Wall or Under Counter Mount
ICA-202D
DUAL CHANNEL
INTERCOM AMPLIFIER
POWER
OPERATOR
REACH PAGE
ACTIVE
THRES
REMOTE
REACH
ACTIVE
THRES
ICA-202D-WM
ICA-202D
DUAL CHANNEL
INTERCOM AMPLIFIER
POWER
OPERATOR
REACH PAGE
ACTIVE
THRES
REMOTE
REACH
ACTIVE
THRES
WM2 Shown with an ICA-202D and a companion PA-402
Rack Mount Option
OPERATOR
REM SPKR (-)
Tech Works * YORBA LINDA * CA * 1- 800-813-1 080 * WWW.TECH4PEO PLE.COM
LEVEL
LEVEL
ACTIVE
REMOTE
OP MIC (-)
OP MIC (+)
OP SPKR (-)
COMMON
OP SPKR (+)
OP EXT DN
COMMON
OP EXT UP
COMMON
REM SPKR (+)
COMMON
LINE OUT (+)
LINE OUT (-)
PAGE OUT (-)
PAGE OUT (+)
P-TONE SW
PAGE SW
ACTIVE
ICA-202D
ACTIVATE SW
MUTE SW
SHUT OFF SW
CHASSIS
+24VDC
COMMON
CALL SW
PTT SW
POWER
24VDC-2A
ICA-202D-RM single unit rack mounted
All Tech Works Amplifiers can rack mount Front or Rear facing out.
ICA-202D
DUAL CHANNEL
INTERCOM AMPLIFIER
POWER
OPERATOR
REACH PAGE
ACTIVE
THRES
REMOTE
REACH
ACTIVE
ICA-202D
OPERATOR
DUAL CHANNEL
INTERCOM AMPLIFIER
THRES
POWER
REACH PAGE
ACTIVE
THRES
REMOTE
REACH
ACTIVE
THRES
RM2 Shown with two ICA-202D units mounted in a single rack space
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 31 of 32
PA-402 PAGING AMPLIFIER
-
PSD-
2437A -
Power Supply 24 VDC @ 3.
7 Amps
WM-1 & WM
-
2 WALL OR UNDER COUNTER MOUNT
-
RM-1 & RM
-
2 RACK MOUNT
-
VPSS
- Vandal Proof Speaker Station
DODC
-1 – Detention Operator Desk Console
DODC
-2 – Detention Operator Desk Console
HM-1-SUB
- Hidden Microphone Sub Assembly
-
Accessories
the ICA-202D. It delivers 40 Watts to 25 Volt loads at very low noise and
distortion. Perfect for Prisons or Security applications when working in large
areas or high noise.
grade power supply. This unit is UL and CSA listed and includes a 6-foot
removable power cord with a North American standard Edison connector.
ICA-202D
REMOTE
OPERATOR
DUAL CHANNEL
INTERCOM AMPLIFIER
ACTIVE
POWER
THRESREACH PAGE ACTIVE REACH
THRES
ICA-202D
REMOTE
OPERATOR
DUAL CHANNEL
INTERCOM AMPLIFIER
ACTIVE
POWER
THRESREACH PAGE ACTIVE REACH
THRES
available with a top that provides 1” metal tabs on each side of the unit for easy
attachment to either a wall or the under side of a counter. Also available in a
side by side WM-2 .
ICA-202D
REMOTE
OPERATOR
DUAL CHANNEL
INTERCOM AMPLIFIER
ACTIVE
POWER
THRESREACH PAGE ACTIVEREACH
THRES
ICA-202D
ICA-202D
DUAL CHANNEL
DUAL CHANNEL
REMOTE
OPERATOR
OPERATOR
INTERCOM AMPLIFIER
INTERCOM AMPLIFIER
REACH PAGE
REACH
REACH PAGE
ACTIVE
POWER
THRES
ACTIVE
THRES
ACTIVE
POWER
THRES
a single unit (RM-1), dual units (RM-2) (side by side), or as companions with
accessories like the PA-401 Paging Amplifier. The rack mount is 1 rack unit (1-
REMOTE
7/8”) High by EIA 19” Wide.
REACH
ACTIVE
THRES
speaker/microphone and momentary, normally open, push-to-call button. The
faceplate is a 2 gang electric box mount, 12 gage, brushed stainless steel with
steel security screens mounted between the faceplate and the loudspeaker;
tamper-resistant hardware is included.
stainless steel faceplate and vandal resistant push buttons. The base is epoxy
finished cold rolled steel. A professional condenser microphone provides clear
high quality page and talk communication. A vandal resistant 3 inch speaker is
included with steel security screens mounted between the faceplate.
An audio amplifier designed to add Power to
- is a regulated computer
The ICA-202D is
ICA-202D units can be rack mounted as either
- a complete call-in station with integral
– all steel console with brushed
stainless steel faceplate and vandal resistant push buttons. The base is epoxy
finished cold rolled steel. A Hidden condenser microphone provides clear high
quality page and talk communication. A vandal resistant 3 inch speaker is
included with steel security screens mounted between the faceplate.
Directional Condenser Microphone with an electronically balanced preamp
designed for high quality audio pick up. This is a sub assembly for flush
mounting in a console.
Intercom Relay Modules – Tech Works makes a variety of intercom Relay
modules for routing audio and call in signals. The ICR-116 is 16 Relays with
Tech Works ICR-116
connector for field wiring and interconnect cables to PLC. The ICR-44 is a snap
track mount 4 relay assembly designed to allow multiple master audio routing
by a PLC.
06/29/17 ICA-202D OPERATION AND INSTALLATION MANUAL Page 32 of 32
– all steel console with brushed
The HM-1 is an Omni-
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