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06/29/17 

ICA-202D OPERATION AND INSTALLATION MANUAL   

Page 27 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 

Summary of Contents for ICA-202D

Page 1: ...utput 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 Th...

Page 2: ...h 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 Fro...

Page 3: ...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...

Page 4: ...he 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 op...

Page 5: ...r 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...

Page 6: ...r 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 Microph...

Page 7: ...e 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 Warb...

Page 8: ...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...

Page 9: ...er 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 Flas...

Page 10: ...sed 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 chann...

Page 11: ...nded 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...

Page 12: ...E O S A TONE_ON PRIVACY TONE TIMER OR PAGE PAGE PRE ANNOUCE TONE OR RESET PTT ACTIVE PTONE_ENB_SW 18 SECONDS REPEATING 200MS ALERT TONE GENERATOR A_TONE 0dB HIGH 6dB MEDIUM 12dB LOW PAGE MUX LINE OUT...

Page 13: ...06 29 17 ICA 202D OPERATION AND INSTALLATION MANUAL Page 13 of 32 Jumper Options Refer to the Block Diagram for Jumper Function ICA 202D 3 PCB Jumper Locations Factory Default Positions Shown...

Page 14: ...nating 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 mi...

Page 15: ...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 Pa...

Page 16: ...s 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 se...

Page 17: ...th 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...

Page 18: ...y 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 s...

Page 19: ...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...

Page 20: ...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...

Page 21: ...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...

Page 22: ...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...

Page 23: ...OUNCE PAGE TONE HI CUT MED CUT OP EQ Tech Works ICA 202 HI CUT MED CUT REM EQ REV D 3 EDGE TRIGGER OFF ON MUTE UN MUTE INTERNAL AMP PAGE ACTIVE PTT CANCEL CALL TONE LATCH LATCH WARBLE INTERMIT CONTIN...

Page 24: ...Preset Value Below are the internal jumper settings for the simple Prison Guard functions OP MIC REM SPKR REM SPKR OP MIC OP SPKR COMMON OP SPKR COMMON PAGE OUT PAGE OUT 24VDC 2A P TONE SW PTT SW PAGE...

Page 25: ...PKR REM SPKR OP MIC OP SPKR COMMON OP SPKR COMMON PAGE OUT PAGE OUT 24VDC 2A P TONE SW PTT SW PAGE SW ACTIVATE SW MUTE SW SHUT OFF SW CHASSIS 24VDC COMMON ICA 202D Tech Works YORBA LINDA CA 1 800 813...

Page 26: ...V EL REMOTE POWER OP MIC REM SPKR REM SPKR OP MIC OP SPKR COMMON OP SPKR COMMON PAGE OUT PAGE OUT 24VDC 2A P TONE SW PTT SW PAGE SW ACTIVATE SW MUTE SW SHUT OFF SW CHASSIS 24VDC COMMON ICA 202D Tech W...

Page 27: ...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 interfa...

Page 28: ...ing over Ethernet you can do it using the ICA 202D Below are the internal jumper settings for the interface shown above TECH WORKS ICA 202D INTERCOM AMPLIFIER ALC ALC STATION SELECT RELAYS PRISON CELL...

Page 29: ...the internal jumper settings for the interface shown above HI CUT MED CUT OP EQ HI CUT MED CUT REM EQ OFF ON OFF ON PHANTOM POWER LO HI GAIN OP MIC REM SPKR REM SPKR OP MIC OP SPKR COMMON OP SPKR COMM...

Page 30: ...vailable by combining this application with applications such as PLC control and others OP MIC REM SPKR REM SPKR OP MIC OP SPKR COMMON OP SPKR COMMON PAGE OUT PAGE OUT 24VDC 2A P TONE SW PTT SW PAGE S...

Page 31: ...AMPLIFIER POWER ICA 202D THRES REACH PAGE ACTIVE REACH OPERATOR THRES REMOTE ACTIVE DUAL CHANNEL INTERCOM AMPLIFIER POWER ICA 202D THRES REACH PAGE ACTIVE REACH OPERATOR THRES OP MIC REM SPKR REM SPKR...

Page 32: ...k communication A vandal resistant 3 inch speaker is included with steel security screens mounted between the faceplate DODC 2 Detention Operator Desk Console all steel console with brushed stainless...

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