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Clear-Com KB-211, User Manual

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Clear-Com KB-211 User Manual Download Page 31

Summary of Contents for KB-211

Page 1: ...KB 211 KB 211GM TWO CHANNEL SPEAKER STATIONS USER MANUAL...

Page 2: ......

Page 3: ...ion talk button operates in electronic momentary or latching mode Monitoring can be done through the headset the integral speaker or both simultaneously The KB 211 offers both visual and audible call...

Page 4: ...to the ON or CLOSED position 4 Install the KB 211 into the four gang outlet box or V Box For additional information refer to the Clear Com PL Pro System Installation Manual 5 Set Listen Levels and Sid...

Page 5: ...Talk button while speaking Release it when finished Latching Press and release the button quickly to latch the Talk function Press and release the button again to turn off the Talk function Talk Indic...

Page 6: ...the Speaker ON OFF Switch is turned off The Tone Alert plays through both the speaker and headset if the Speaker ON OFF Switch is turned on 4 Intercom Level Control Turn this control to set the listen...

Page 7: ...h also controls whether the Tone Alert is heard through the speaker The speaker volume will automatically dip when the talk function is set unless the VOX function is enabled 8 Mic Select Switch KB 21...

Page 8: ...one on top of the microphone mounting flange and turn it clockwise to lock the microphone in place 12 VOX Control KB 211GM only When the panel microphone is selected on the KB 211GM the VOX control sh...

Page 9: ...disabled by turning the control fully counterclockwise 14 Option Switches Three Option switches are provided They should be configured when the system is set up and shouldn t be changed in normal oper...

Page 10: ...le the operator is talking 15 Call Signal Jumper In some installations it is important to receive a call signal from either channel regardless of the setting of the Channel selector The plug on jumper...

Page 11: ...vel control The Program Input accepts a balanced or unbalanced line level audio signal from 20 dBv to 10 dBv If this input is connected to the stage announce SA output of a Main Station it can be used...

Page 12: ...t be installed when optional modules are not used When the optional EB 4W or EB TW modules are used both P1 and P3 must be removed In the KB 211GM P2 is replaced by the VOX module Save these jumper pl...

Page 13: ...ll Intercom Volume Speaker On Off TW Option Channel Switch Ch A Speaker Power Ch B Call Send Receive RMK Microprocessor Talk Headset Output Balanced Program Input Speaker Dip Program Mute Mic Mute Com...

Page 14: ...may not be receiving AC power Solution Check connections and cable EQ LIM Mic Select Headset Mic Panel Mic Talk Sidetone Null Call Light Call Intercom Volume Red Green Speaker On Off TW Option Channe...

Page 15: ...W options are not used Hum or buzz in the system Scenario 1 Inductive pickup caused by close proximity of this speaker station or connected stations to power lines or transformers Solution Relocate th...

Page 16: ...lockwise direction Note VOX is intended for close in operation Excessive crosstalk Scenario 1 High DC resistance has a ground return Solution Use heavier cable to add additional conductor s to the gro...

Page 17: ...If equipment other than Clear Com intercom equipment must be connected to the intercom line please contact Clear Com application or service personnel for information or recommendations Scenario 2 Far...

Page 18: ...2 01 uF Ceramic Disc SMD 50V 10 151160 C13 C37 C38 C40C31 C29 047 uF Ceramic Disc SMD 50V 10 151168 C18 C35 1 uF Ceramic Disc SMD 50V 10 151172 C10 C25 C32 C33 C34 C36 C45 22 uF Ceramic Disc SMD 50V 1...

Page 19: ...C LM384 POWER 4W OP AMP 14 PIN 480012 IC5 IC 7805L POS 5V REGULATOR TO 92 PKG 480088 IC11 Diode BAV70 DUAL DIODE COM CATHODE SMD 481019 D9 D12 D15 D16 IC 833 DUAL OPAMP SMD 481023 IC1 IC2 IC8 Transist...

Page 20: ...uminum 16V 20 150146 C11 22 uF Tantalum 10V 10 150158 C14 Resistors Value Power Type Tol Part Designator 4 7K OHM 1 4 Carbon Film 5 410013 R1 R12 R16 R17 R13 6 8K OHM 1 4 Carbon Film 5 410036 R2 1 5K...

Page 21: ...Clear Com Intercom Systems KB 211 KB 211GM Two Channel Speaker Stations Clear Com Intercom Systems 1999 19 Rev A FIGURE 8 Main PCB Component Layout...

Page 22: ...KB 211 KB 211GM Two Channel Speaker Stations Clear Com Intercom Systems Rev A 20 Clear Com Intercom Systems 1999 This page is a place holder...

Page 23: ...Clear Com Intercom Systems 1999 21 Rev A FIGURE 9 KB 211 Schematic...

Page 24: ...KB 211 KB 211GM Two Channel Speaker Stations Clear Com Intercom Systems Rev A 22 Clear Com Intercom Systems 1999 This page is a place holder...

Page 25: ...Clear Com Intercom Systems KB 211 KB 211GM Two Channel Speaker Stations Clear Com Intercom Systems 1999 23 Rev A FIGURE 10 VOX PCB Component Layout...

Page 26: ...KB 211 KB 211GM Two Channel Speaker Stations Clear Com Intercom Systems Rev A 24 Clear Com Intercom Systems 1999 FIGURE 11 VOX Schematic...

Page 27: ...esponse 250 Hz to 12 kHz contoured for intelligibility Limiter Range 20 dB Headphone Amplifier Load Impedance Range 50 ohm to 2k ohm Output Level at least 20 dBV across 600 ohm Distortion 0 5 THD at 1...

Page 28: ...Headset Mic switch KB 211GM only 1 Program Level control 1 Intercom volume control 1 Sidetone control 1 Talk button 1 Call button 1 VOX control KB 211GM only 1 Channel selector 1 Speaker On Off switch...

Page 29: ...l implied warranties including the implied warranty of merchantability are limited to the duration of this express limited warranty Neither Clear Com nor the dealer who sells Clear Com products is lia...

Page 30: ...Systems 1999 Non Warranty Repair Equipment that is not under warranty must be sent prepaid to Clear Com If requested an estimate of repair costs will be issued prior to service Once repair is approved...

Page 31: ......

Page 32: ...4065 Hollis Street Emeryville CA 94608 510 496 6666 Fax 510 496 6601 Manual Part Number 810253 Rev A...

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