0 - Clear-Com
Contents
1. t lg 031410345 35183431110 SSTINA 901014 CON 07 900041 ON 03 08 242. NOILVLS 3100 31 00 TIY 2310402 OL 2018 NOLLONAL HO 9915 TYNINH31 31 9 5 350 12018 HOLIINNOD NOILVIS 113 LON OQ 53801 11 310 II SYSTEM INTERCONNECTION A INPUTS amp OUTPUTS WHAT CABLE TO USE e Intercom Qutput to the System Each intercom channel is output from the CS 210 on standard two conductor mic cable The cable is routed froa the 3 pin male XLR connectors on the CS 210 rear panel to the 3 pin female XLR input connectors on the Remote Stations One cable wire carries DC power and the other wire carries the intercom signal the shield acts as circuit ground The pin assignments on ALL 3 pin XLR intercom connectors male and fe male are PIN COMMON PIN 2 VDC PIN 3 INTERCOM AUDIO Channel A or B e Choosing Cable The CS 210 provides three output connectors for each channel so each channel can be routed separately in individual mic cables or combined from one Channel A output and one Channel 8 output onto multi p ir cable The latter is most convenient when connecting to the input terminal e strips of Clear Com s wall or custom mount two channel stations such as 11 or MR 102A These methods of course can be combined in the same When choosing interconnecting cable keep the following considerations nind 1 DC resistance affects crosstalk In permanent installa tions do not use wire smaller than 20 gauge stranded excepts runs shorter
3. The headset connector pin out assign ment is PIN 1 nic common PIN 2 nic hot 6 PIN 3 headphone common PIN 4 headphone hot DO NOT place the headset s within two feet of an AC power trans former or the will pick up a hua To meet optimum performance specs the headsets used handsets nics etc should have the following characteristics e Microphone type dynanic Impedance 150 250 ohms Output Level 554 Headphone Type dynamic Output Impedance 50 2000 58 system should now be ready to run e Dreseing Reema i Ag 7 N Moo 2 13 used route 2 onio mac Nor CONNEC hor CP 300 TRE 5 TOURING INTERCOM SYSTEM Portable s pub a ni AHO EOE Line ST OE OER dr Typical Intercom Systems FACTORY INTERCOM SYSTEM 9 III OPERATION OF THE CS 210 MAIN STATION Front Panel Controls and Connectors The CS 210 controls and connectors are described below in the order they ap on the CS 210 front panel from left to right pear OLRAFROSKS S 2008 am station 1 ot Reset Short ane 8 0222 c i A 5 CMT MS 200B CS 210 MS 200B Shown Next to the circuit b
4. will be sent on Individual trimpots permit independent adjustment of the program level fed to the selected channel s without affecting PGM level in the CS 210 s headset output The trimpots are temporarily internally adjustable They are located directly next to the Monitor Select buttons on the PC board i If program is not wanted in either channel the trimpots should be set fully CCW MIC TO LINE GAIN LEVEL INCREASE In effecting a 4dB Mic to Line increase in gain level the following changes have been made Change 27K OHM R66 R67 43K OHM 1 5K OHM R31 2 7K OHM CSMSADD DOC REV E e 11 17 87 I INTRODUCTION A THE CLEAR COM CONCEPT Clear Com is closed circuit in tercom system that provides high intelligibility two way communica tions in high or low noise envi ronments A basic intercom systen contains or multi channel Main Station interconnected with various remote headset and speaker Stations Clear Com manufactures a wide var iety of portable rack mount and custom mount intercoms All are compatible allowing systems to be set up according to specific needs The Clear Com System interfaces with virtually any other type of communications systems call Clear Com or see your dealer for info Clear Com Stations normally inter connect with standard 2 conductor shielded microphone cable they include inputs for XLR type 3 pin connectors One wire in the mic cable ca
5. 0013 210055 210139 210140 240010 240015 240032 250219 250220 390005 470020 470043 390010 11 510002 510004 510006 510012 510035 510053 510065 500089 520025 520027 520029 610000 640000 710154 810009 820030 Description Filter Choke Headset Connector 4 pin XLR male External Speaker Jack Rear Panel Connector 3 XLR male Rear Panel Connector 3 pin XLR female Rubber Foot 1 2 Square Volume knob 1 2 Dia Carry Strap 8 brown w hardware CS 210 Chassis CS 210 Chassis Cover Lamp with monitor switch asy Program Intercom Volume Controls Sidetone Adjust Pot LED red panel mount w retainer Power Switch rocker illumin Toggle Switch mic on off on mom Toggle Switch mini speaker Push button momentary call S A Monitor Select Switch pair Slide Switch line voltage select Slide Switch program assignment Speaker 3 round 16 ohm Fuse 5 amp slow blow Fuseholder Circuit breaker 9 amp Power Cord 1 077 Strain relief for power cord CS 210 printed circuit board assy 5 210 5 200 Operation k Service Manual Electret Gooseneck Mic Option Kit INO qM qM 002 57 7 012520002 5A 34v 50001 IW SOVeWIONDIN S 3274 2 SAS m UI0 189 SAHO NI HY SHOLSISJH
6. 25 VAC 50 60 Hz power consumption is 60 watts maximum 1 Use standard shielded mic cable see previous section ALWAYS AVOID BENDS IN THE CABLING allow at least 3 behind rack mount units for cable extending from rear panels 2 Route all cables from the Main Station to the Remote Stations Pin e assignments on ALL 3 pin intercom connectors are PIN 1 common PIN 2 30 volts DC PIN 3 intercom audio 3 Route cables away from heavy AC power sources such as lighting pan els electric motors or power transformers 4 In permanent installations BE SURE TO INSTALL THE SYSTEM IN ACCORDANCE WITH APPROVED LOCAL BUILDING CODE 5 If program monitoring required input the external signal to the 3 pin female connector on the CS 210 rear panel The station opera tor hears the program in the headset mixed with the intercom activ ity The program pre amp s gain is switch selectable on rear panel for either mic level 65dBv nominal input signal or line level 1SdBv nominal The input is balanced and the impedance e 100k ohms in line position 600 ohas in mic position e 6 Turn on power switch it should illuminate plug in headset s and set intercom Program and Sidetone levels NOTE about HEADSETS AND MICS The CS 210 headset connectors like e all Clear Com dynamic headset connector s are 4 pin male XLR The connector labeled Headset 2 works with the Mic On Off Momentary On toggle switch above it
7. 500 feet and BELDEN 8760 18 gauge stranded for up to 5000 feet x If conduit is available when installing permanent Remote Stations run interconnect cable through the conduits to each wail mounted unit NOTE Signal ground Pin on intercom connectors and Chassis ground on all Remote Stations are NOT the same point Do NOT connect Pin 1 and the chassis together The chassis is insulated from the signal ground with a capacitor 01 microfarad l 4kV This eliminates the hum and potential shock hazards that can arise if stations are at a different ground potential The only place the chassis amp signal ground are con nected together is in the CS 210 Main Station through a 10 ohm resistor sIf you choose not to use Belden cable use and equivalent type with sin ilar wire gauge and capacitance Cable especially in longer runs should have as low a DC resistance as possible Multi Channel Cable Considerations When installing a system that includes two channel or more stations each channel may be routed individually to the remote station with separ ate mic cables OR two channels may be routed together with two pair individually shielded cable Belden 8723 Crosstalk When multiple channels are fed to remote stations the amount of cross talk is proportional to the amount of DC resistance in the ground return 2 ohms or less is ideal and will give you 40dB of isolation Anything greater than 2 ohms will increase crosstal
8. CS 210 MS 200B Two Channel Main Stations INSTRUCTION and SERVICE MANUAL 67 Intercom Systems 945 Camelia St Berkeley California 94710 415 527 6666 Clear Com 810009 4 88 REV C INTRODUCTION A The Clear Com Concept B The CS 210 MS 200B II SYSTEM INTERCONNECTION A Inputs amp Outputs What Cable to Use Portable Installation Cable Permanent Installation Cable Multiple Power Sources Loop Through Set Up Signaling Configuration Interconnection Procedure Typical Two Channel Systems OPERATION A Front Panel Controls amp Connectors B Rear Panel Controls amp Connectors C Warranty amp Maintenance TROUBLE SHOOTING 8 210 5 2008 SPECIFICATIONS CS 210 MS 200B PARTS LISTING SYSTEM SCHEMATICS NOTICE e While Clear Com makes every attempt to maintain the accuracy of the information contained in its product manuals the information is subject to change without notice ADDENDUM TO CS 210 MS 200B MANUAL REV E The program feed has been modified to provide separate level adjustment for each intercom channel The discussion about Program Volume on page ll is therefore incorrect and should be replaced by the following PROGRAM VOLUME The Program Volume knob controls only the program level heard in the station s headset output This control does not affect the level of program sent to the intercom lines A switch on the rear panel selects which of the intercom channels program
9. able Defective remote b Renedy Loss of AC power a Plug unit into depen dable AC source Replace fuse if it blows repeatedly bridge rectifier or other component prob ably shorted inside the power supply Have power supply fixed Remove cables one at atime from Main Station unitl faulty line is located Check for shorts between Pins 1 amp 2 Check remote unit or bu22 in system SS Excessive back ground noise pick up by mic Inductive pick up caused by close proximity of Main or Remote Station to pow er lines or trans formers 10 ohm chassis groung resistor R14 in power supply is opens Inductive pick up by headset mic check by switching mic on and off distance from nic to lips is too far volume too high too many mics on in entire systen 16 a Relocate offending unit b Check resistance between chassis and Pin l of connector make sure it s 10 ohms If not open power sup ply and replace res istor c Move mic away from hum field or use Carbon or electret headset a Move closer to mic b Lower headset speaker volume c Turn off all unused mics Symptom Cause Renedy e System Feedback Accoustical Check sidetone levels Check termination Volume too high at one station Two or more speaker stations have mics on simult
10. al jumpers to provide that termination that is if it is the only power supplying station in the system The intercom line terminations are removable resistors appropriately marked on the printed circuit board They can be pulled to allow the CS 210 to operate a remote station if another power supply is connected to the system If your system does include a second CS 210 or other Main Station or Power Supply system termination is provided by just ONE source The termination switches in all Power Supplies Main Stations must be Off except at one master location See Multiple Power Sources Unconnected Channel Inputs Outputs If your system includes a multi channel station that has one or more of its channels not physically connected e g empty input connector the unconnected channel s MUST be terminated at that station THIS APPLIES TO ALL STATIONS MAIN REMOTE OR POWER SUPPLY 12 Rear Panel Controls and Connectors The 08 210 controls and connectors are described below in the order they appear on the CS 210 rear panel from left to right Ext Spkr Mains Select F y u 2 WARNING FUSE Sey de aS Clear Co m interc m systems AR Res 0 Stage Announce Output Channel A Outputs ance 9 50 60 Hr PROGRAM INPUT j pin female XLR connector pin out assignment is Pin 1 ground Pin 2 input Pin 3 input An auxiliary program input an
11. aneously speak one at a time per channel Power Supply s 10 ohm resistor is opened when the system ground comes contact with something hot with respect to the Main Station Earth Ground Should this occur we recommend you carefully check the system ground and AC distribution in the area NOTE THIS IS A POTENTIALLY DANGEROUS SITUATION IF IT OCCURS A SHOCK HAZARD MAY OCCUR BETWEEN METAL BOOM OF HEADSET AND GROUND CS 210 SPECIFICATIONS AMPLIFIER DESIGN IC amplifiers including solid state switching and signaling circuits Current limited and short circuit protected MICROPHONE PRE AMP Input Low impedance lk ohm for 200 ohm nominal dynamic elements Input Level 55 dBv nominal 10 dBv max before clippings Nominal Gain 37 8 Frequency Response 250 Hz 12kHz with a contoured response to enhance voice intelligibility Gain Adjust 5 dB Limiter Range 25 8 HEADPHONE SPEAKER AMPLIFIER Drives any load of at least 16 ohms to full output 18 dBv Distortion lt 0 2 THD at 2 Gain from intercom line 37 dB max Frequency Response 150 18kHz 2 dB Power Amp 4 PROGRAM AMPLIFIER Line Level Maximum input before clipping 12 dBv Minimum input for nominal l amp dBv Line Level 18dBv Input impedance 100k ohms balanced Maximum gain from program line input to headset speaker output 37dB Mic Level Maximum input before clipping 36dBv Minimum input for nominal l amp dBv line leve
12. ct buttons one for Channel A one for Channel B These buttons light dimly when engaged Either channel be monitored separately or both si multaneously without tying the two channels together The CS 210 controls the headset listen level of channel activity with a Volume Knob on the front panel Stage Announce Paging On its rear panel the CS 210 pro vides output line level bal anced from the mic preamp The Stage Announce button on the front panel activates this output allowing the 08 210 operator to speak into the mic or handset and obtain access to an external speak er amp system The Stage Announce button also mutes the operator s voice output to the intercom chan nels Call Signaling Visual Call Signaling attracts the attention of people who have removed their headsets or turned off their speakers The CS 210 front panel provides a Call but ton Pressing it signals the sta tions on any channe whose Monitor Select button is engaged and il luminated When a remote station sends a Call Signal the lamp in the Monitor Select button associated with that Station s channel light brightly whether or not the Monitor 13 On Proqram Input The CS 210 accepts a balanced mic level OR line level program input Which can be monitored in the head set s The external program is assignable to either or both chan nels and mixes with the intercon Signal The volume of progra
13. d for mon itoring If the Monitor Select button for Channel A is On pressing Call will signal all stations on Channel A only If both Monitor buttons are on pressing Call causes the lamps at all stations to light When remote station activates the signal circuit the CS 210 Monitor Select button for the station s channel will light brightly whether on or off PROGRAM VOLUME The Program Volume knob adjusts the volume of program input which is nixed with the intercom activity at either headset output It does not affect the volume of the program being sent out on the intercom lines Program Level The level of the program input being sent to the individual intercom Channels is adjustable by means of recessed screwdriver adjustments next to their respective channel monitor switches SIDETONE ADJUST The Sidetone Adjust knob controls the overall volume level of the oper ator s voice as he she hears it in the headset and simultaneously pre vents feedback when the CS 210 is connected to an external speaker It does not affect the level of the operator s voice going to other sta tions or the level of any incoming signals Sidetone level needs to be set just once if at all even when stations join or leave the system INTERCOM VOLUME This knob adjusts the overall volume of intercom activity heard by the CS 210 operator s STAGE ANNOUNCE The Stage Announce function lets the CS 210 operator make announcements via an ext
14. d level select switch are located on the CS 210 rear panel The CS 210 accepts a balanced or unbalanced input eith er mic level or line level input level select switch is on rear panel The 5 210 operator can monitor program along with intercom activity in the headset s and mix program with the intercom signal on one or both Channels The input impedance is 100k ohms in the line position 600 ohms in the mic position A 20dBv nominal signal line level input drives the line to full output 65dBv nominal for mic level If inputting a balanced signal apply it to Pins 2 and 3 If inputting an unbalanced signal ground Pin 2 or Pin 3 and apply the signal to the other input pin STAGE ANNOUNCE OUTPUT 3 pin male XLR connector pin out assignment is Pin ground Pin 2 output Pin 3 output LEVEL SELECT Slide switch choose mic level or line level depending upon which type of signal is input to the progran connector CHANNEL SELECT A A B B Slide switch choose which channel s will receive program input to mon itor either Channel A only both A and B or Channel B only 13 CHANNEL A amp B OUTPUTS 3 pin male XLR connectors pin out assignment is Pin ground Pin 2 DC voltage e Pin 3 intercom audio channel A or B MAINS SELECT Slide switch choose 115V or 230V depending on source of AC power The CS 210 is set up with a fuse for operation from 115VAC you must change the fuse from 1 2 amp value
15. ernal speaker amp system For these paging applications the CS 210 provides a balanced line level output signal to the Stage An nounce connector 3 pin male XLR on the rear panel The front panel push button activates this output and simultaneously mutes the operator s voice to the intercom channels HEADSET CONNECTORS MIC ON OFF ON SWITCH There are two dynamic headset connectors on the CS 210 front panel the one labeled Headset 2 is associated with the Mic On Off Momentary toggle switch above it NOTE In the Momentary On position the listen level at the headset and speaker outputs is reduced by approximately 6dB This provides greater acoustic feedback margin in applications where the headset mic or optio nal gooseneck Mic is used only occasionally 11 When there is no input to either headset connector the CS 210 s mic pre amplifier shuts off automatically This eliminates any noise pick up at the unused input o The headset connector pin out assignment is PIN mic common PIN 2 mic hot PIN 3 headphone common PIN 4 headphone hot When operating the system DO NOT place the headset s within two feet of an AC power transformer or the mic s will pick up a hun SPEAKER ON OFF SWITCH MS 200B ONLY This switch shuts off BOTH internal and external speaker functions OTHER OPERATIONAL CONSIDERATIONS Termination One audio termination per channel is required and the CS 210 is set up with intern
16. f cable If the line were cut at one point activity on the channel continues Signaling Confiqurations in Multi Channel Systems In normal circumstances the Call light on two channel selectable remote station which communicates on one channel at a time illumin ates only when someone sends a nal on the channel currently being used by that station not the other This is because the Call signal travels on the intercom audio line in the form of DC volt age However you can MODIFY the two channel cable that is input to multi channel stations KB 11A RM 2 102 so that no matter what channel that group of stations is using their Call lights will go on when either Channel A stations or Channel B stations send a sig nal The diagram below shows a group of two channel stations talking Channel B who want to receive call signals from stations using Channel A this is one way signaling Chan nel B cannot send a signal to Chan nel A This is accomplished by placing four diodes 914 type in series on the two channel intercom line as shown The call signal follows the direction of the diodes Call sig naling is now possible from A stations to B stations ALTERNATIVE SIGNALLING INTERCONNECTION SET UP After determining system configuration and channel assignment pick a location for the 08 2101 it can be anywhere as long as it is provided with a source of 105 1
17. k Each channel must be fed in its own separate shield Tie any unused wires in the interconnect cable to ground Pin 1 thereby further improving the crosstalk Before you install the system consider the following pointers to help determine how to configure the intercom connections Multiple Power Sources Clear Com Main Stations and Power Supplies can be paralleled together in an intercom system having an extra source provides increased current capability you can add more stations to the mile of cable and back up power supply If using two CS 210 Main Stations termination for the system must occur in one source only the term ination resistors should remain in one Main Station and be removed in the other These resistors R85 Channel A and R84 Channel 8 are mounted in sockets on the unit s PC board See diagran CS 210 7 BACK UP 9 TERNA DON 0 CS 210 D 9 2 TERMINATION OM DU L POWER SET UP DOUBLES SYSTEM CAPACITY amp PROVIDES BACK UP POWER Loop Through Method The common method to interconnect Stations is with a daisy chain M shown here using one channel REMOTE stations Y CS 210 2 OUTPUT B DAISY CHAINS This works well but if the line were broken anywhere along the feed all communication would stop An alternative shown below solves a potential problem by using TWO Channel A or B etc output con 2661078 for one stretch o
18. l 65dBv Input impedance 600 ohms balanced Maximum gain from program mic level input to headset speaker output 85dB Frequency Response 150Hz 2 Power Supply Output Voltage 30 VDC regulateds04 Output Current 1 amp max Channel Separation 50 dB Signal to Noise 255 dB 18 OPERATING CONDITIONS Channel Monitoring Push button selectable A B or both Call Circuitry Receives a signal from remote stations whether or not channel is monitored The Call button sends a signal only on channel s being monitored Capacity Will support up to 60 headset stations or 12 speaker Stations System Impedance 200 ohms internally terminated jumper removable System Level 18 dBv nominal 0 dB before clippings Siqnaling Call Light Sensitivity 4 VDC max Call Voltage 11700 min Stage Announce Balanced line level transformer isolated 600 ohm output from mic pre amp CONNECTORS Headset 2 XLR 4 pin male Channel Outputs 6 XLR 3 pin male Stage Announce 1 XLR 3 PIN MALE Program Input 1 XLR 3 pin female Ext Speaker 1 4 mono phone jack POWER REQUIREMENTS 105 125 OR 210 250 VAC 50 60 Hz switch selectable from rear panel 60 watts max DIMENSIONS 3 1 2 H x 9 11 16 W x 11 11 16 D front to back 89 mm x 254 mo x 305 mm ENVIRONMENTAL TOLERANCE 0 50 degrees C 32 122 degrees F 0 dBv is referenced to 0 775 volts RMS 5 210 MAIN STATION PARTS LISTING Part Number 180000 21
19. m feed to the two intercom channels is independently adjustable with front panel controls Program volume for the operator s headset is adjust able with a knob on the front panel Sidetone The Sidetone Adjust control on the front panel allows the CS 210 oper ator to vary the level of his her own voice as heard in the headset lowering the amount of sidetone helps suppress acoustic feedback when using the CS 210 with an ternal speaker and a gooseneck nic Power Supply Protection 5 210 power supply requ lated current limited and pro vides 30 volts DC at one ampere from 1159 or 2307 switch select able AC mains supply The CS 210 has circuit breaker to protect the system from miswired cable or shorts in the lines If short occurs the front panel circuit breaker pops out and the adjacent red LED illuminates Removing the short then pressing the circuit breaker button automatically resets the systen Termination The 08 210 provides audio termina tion for the intercom Easy Interconnection The 08 210 provides three 3 pin male XLR outputs for output of Channel A connectors are wired in parallel and three of the same for Channel B output Intercom signals are fed from the CS 210 with stand ard mic cable see next section 0 mea 310 3 0 NNOW TIVM 012 59 29 Ho sued JOl2npuoo om 67 CANNVHO OML NOLLVTIVLSNI 1 03
20. nce and place a minimum load on the line Audio level remains constant never fluctuating even when stations leave or join the line Clear Com was designed to provide the highest reliability intercom system for use in critical communi cation environments Our company commandment THOU SHALT NOT FAIL B THE CS 210 MAIN STATION The CS 210 is a portable two chan nel main station with a regulated power supply and a versatile itoring system It features excel lent speech intelligibility in all noise levels The 5 2008 is a Rack Mounted unit featuring a built in speaker but is otherwise identical to the CS 210 5 210 contains a mic preamp with a limiter and can support two dynamic headsets handsets The mic circuit of Headset 1 always on The mic circuit of Headset 2 is controlled by the front panel mic On Off switch which allows the mic to be locked On up position locked Off middle position or operated Momentarily down posi tion The CS 210 s power amp can drive a standard Clear Com headset to levels greater than 110 dB SPL or an external 16 ohm speaker Monitoring System The CS 210 provides DC voltage and the ability to talk amp listen on two separate channels It supports and monitors two intercom lines con taining as many as 60 remote head set or 12 remote speaker stations The 5 210 operator monitors the intercom channels by pressing the locking Monitor Sele
21. reaker reset button is a red LED that glows when the breaker pops indicating the presence of a short circuit in the wiring or in a station After identifying and correcting the problem press the reset button and the system is ready to run MONI TOR SELECT BUTTONS The CS 210 operator chooses which channel s to monitor with the locking Monitor Select buttons which light dimly when activated Pressing the Monitor button for Channel A or B allows the CS 210 operator using a headset handset plugged into the unit s front panel to talk and listen to all stations using that channel i e connected to the related outputs from the CS 210 rear panei The monitoring buttons let you mon itor each channel separately or both at once without tying them together The Monitor Select buttons function during call signaling Monitor Select button whether on or off lights brightly when a station on the associated channel sends a Call signal Use grease pencil in the space provided below each Monitor Select button to write the channel functions or to identify stations on each channel e g Channel A Dressing Rooms Channel B Lighting Crew 10 CALL Visual Call Siqnalinq Pressing the CALL button activates the Visual Signal circuit in the in tercom system allowing you to attract the attention of other operators who have removed their headsets or turned off their speakers The Call button signals all stations on the channel selecte
22. rries DC power 30volts from the Main Station to the remote Stations and the other wire ries the audio signal the shield acts as common ground Audio ter Mination is required at only one point in the intercom system and is usually provided by the Main Station or Power Supply Clear Com is a distributed ampli fier system each main and remote station contains its own mic amplifier power amplifier for headset or speaker and signaling circuitry Every intercom has Automatic Headset Detection a cir cuit that shuts off the mic preamp when the mic or headset is not con nected 30 background noise is not increased by an unused but on line connected station Low impedance mic input lines 200 ohms and spe Cially designed circuitry make Clear Com channels virtually immune to RF and dimmer noise Clear Com Main Stations Power Sup plies and some Remote Stations provide an auxiliary program input with its own volume control which allows the station operator to mon itor external audio Visual Signal Circuitry a standard feature on most stations allows the user to attract the attention of operators who have removed their headsets or turned off their speak ers Depending upon the type of Main and Remote Stations selected a maximum amount of Remote Stations from 12 speaker to 100 headset can be connected along one mile of wire Remote Stations bridge the intercom line at a very high impeda
23. than 100 feet Keep the total resistance under 100 ohms e 2 Clear Com Systems operate with cable that has no more than 50 from conductor to conductor and no more than 70 pF from conductor to shield PORTABLE INSTALLATION CABLE Typical cable for connecting the CS 210 to the Remote Stations is rubber 9 jacketed two conductor shielded microphone cable We suggest you try BELDEN 8413 24 gauge stranded for intercom lines up to 100 feet in length and BELDEN 8412 20 gauge stranded for lines up to 5000 feet s continued SYSTEM INTERCONNECTION CONTINUED e Portable Ipterconnection Methods Portable Remote Stations each have a pair of input and output connectors which are wired in parallel allowing you to set up a daisy chain when installing the system A diagram in this section illustrates the daisy chain method As an alternative Clear Com s Model QP 100 Quadruple Line Splitter is a small interconnect device that accepts on cable put and provides three outputs Both the daisy chain and line splitting methods lessen the cable needed and simplify the installation process PERMANENT INSTALLATION CABLE To install wall mount and custom mount remote stations we recommend you use vinyl insulated and jacketed cable it costs less and is easier to pull through conduit than the rubber insulated cable Use low capaci tance cable We suggest you try BELDEN 8762 20 gauge stranded for applications up to
24. to 1 4 amp slow blow if operation from 230VAC is required EXTERNAL SPEAKER Accepts standard 1 4 tip sleeve phone plug to connect an external speak er to the CS 210 MS 200B Minimum recommended impedance is 16 ohms In the MS 200B the speaker switch controls both internal and external speaker functions Also when an external speaker is plugged in the internal speaker is automatically switched off 14 N C WARRANTY and MAINTENANCE Before shipping we test each unit individually to vensure that it meets or exceeds all specifica tions All units are guaranteed by Clear Com against defects in mater ials and workmanship for one year following date of purchase 90 days for headsets see warranty card enclosed with each unit Our Engineering and Service Depart ments will gladly give you technical advice and assistance If you have any questions regarding operations modifications or plications of your intercom systen call us between 9 and 5 at 415 861 6666 Pacific Standard Time IV Symptom System is non operable power switch is not illuminated A A ee Shorted or mis a Circuit breaker trips repeated ly short cir cuit LED ren ains lit a b TROUBLESHOOTING Cause Internal fuse is b blown could be caused by power supply failure wired intercon nect c
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