CLEAR KB-702 User's Manual
Contents
1. I SINGLE CHANNEL In some installations the KB 702 is intended to be used only with one intercom channel Setting the single channel switch to the on position will connect the KB 702 to the one intercom channel regardless of the position of the front panel channel selector In two channel installations this switch must be set to the off position 2 LONG LINE If along cable run is unavoidable and approaches 700 ft 213 5 or more set the long line option switch to the on position The ability to set a sidetone null depends upon properly setting this switch 3 LATCH DISABLE Setting the latch disable switch to the on position will disable the latching function of the talk button In this mode the talk button must be continuously pressed while the operator is talking 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 P1 makes the call light respond to either a the selected channel or to b either channel depending upon its orientation By default the jumper is set to the selected channel position When the TW or 4 Wire KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS Option modules are installed this jumper is not used In TW operation the call signal always originates on channel A In 4 Wire operation the call signal is not used 16 Intercom Line Connection The KB 702 contains a 5 terminal plug on co2. Pin 1 Ground shield Pin 2 Signal Pin 3 Signal Program Input Cable Wiring Pin3 o 9 Pin 1 KB 702 Program XLR Input Connector Connector Figure 6 Program Input Cable Wiring Option Board Jumpers The three jumper plugs P1 P2 and P3 must be installed when optional modules are not used When the optional EB7 4W four wire or EB7 TW modules are used both P7 and P3 must be removed In the KB 702GM 72 is replaced by the VOX module Save these jumper plugs for possible future use after removing them The KB 702 will not operate without either these jumper plugs or the optional modules installed KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS INSTALLATION 1 Unpack the unit and inspect for any damage that may have occurred in shipping 2 Set the option switches to the default up position 3 Connect the intercom lines If only one intercom line is to be connected turn option switch 1 to the on or closed position 4 Install the KB 702 into the four gang outlet box or V box For additional information refer to the Clear Com System Installation Manual 5 Set listen levels and sidetones Refer to the listen level and sidetone setting topics in the Operation chapter of this manual 6 The speaker station should now be operating properly 7 Read the rest of this manual for further information KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS 2 2 KB 702 KB 702GM
3. TWO CHANNEL SPEAKER STATIONS MAINTENANCE This chapter provides maintenance information including block diagrams and tips for solving problems Caution These servicing instructions are for use by qualified personnel only To reduce the risk of electrical shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so BLOCK DIAGRAM FOR THE KB 702 EQ LIM eee Intercom Volume Speakerspeaker Hoan Ge 3 On Off Mic Speaker a el M i Mic Mute Long Lina Headset Output Talk Talk Am v Lo Balanced OF gt gt Ea ES Program Input Call Alert Program Microprocessor Tone Level Level Call Call LT Light a _ 0 Common Latch ar RE Disable Call Send amp O 30 VDC RMK Power Receive o Ch B T HO Ch A TW Option ma GE Ground Switch 1 O o o Ch B e 7 4 Wire o Input Ch A 16 VAC Rectifier Power 2 Wire 4 Wird ON m o Select elec E o 97 chp po s 4 Wire 4 Out 4 Wire i Ch A ix Option O J Figure 3 7 KB 702 Block Diagram KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS BLOCK DIAGRAM FOR TH
4. and entertainment lighting control apparatus for professional use Part 2 Immunity And thereby compliance with the requirement of Electromagnetic Compatibility Directive 2004 108 EC and Low Voltage Directive 2006 95 EC This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS OPERATION INTRODUCTION Congratulations and thank you for choosing this Clear Com product The KB 702 and KB 702GM two channel speaker stations are powerful user friendly units that can serve as versatile intercom stations Please read this manual completely to better understand the functions of these products For questions not addressed in this manual contact the dealer or Clear Com directly Clear Com applications support and service people are ready to help DESCRIPTION The Clear Com KB 702 is a two channel speaker station ideal for theatre live performances industrial applications and small TV facilities It features excellent speech intelligibility even in high noise environments and can be tailored to your needs through its programmable options In addition the Clear Com KB 702GM contains a jack for an optional Clear Com gooseneck panel microphone and a close in voice controlled circui
5. figure and described by the following text The controls can be accessed without completely removing the panel from its wall box or V Box enclosure by removing the top two screws and loosening the bottom two screws a few turns Then lean the panel out from the wall The controls will then be accessible as shown in the lower view of Figure 1 3 The numbers in the left column of the following descriptions refer to Figure 1 3 KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS 1 5 13 14 15 View from top of KB 702 an I T an aa Front Panel 13 14 Figure 1 3 Internal Adjustments and Connections Call Alert Tone Level Control This control adjusts the volume of the call alert tone sound This is normally adjusted when the system is set up and there should be no need to adjust it in normal operation This feature can be disabled by turning the control fully counterclockwise Option Switches Three option switches are provided They should be configured when the system is set up but are not changed in normal operation Note the on position of each switch is toward the circuit board and the off position is toward the front panel The default position of the switches is in the off position The function of each switch is as follows
6. the intercom Setting a comfortable level of sidetone will ensure that the intercom line sounds alive and also helps you modulate your voice relative to other voices on the line Typically different sidetone null settings are needed depending upon whether you are using the speaker Use one of the following procedures to correctly set the sidetone level control Sidetone Adjustment Procedure for Headset 1 Set the intercom level control to a comfortable level by having someone talk to you from another station 2 Press the talk button and speak into the microphone while turning the sidetone null control slowly back and forth until you hear your voice at a comfortable level in the headset Sidetone Adjustment Procedure for Gooseneck Mic KB 702GM only or hand held push to talk mic with the speaker turned on 1 Set the VOX control fully counterclockwise to disable this feature 2 Set the intercom level control to a comfortable level 3 Press the talk button and speak into the microphone while turning the sidetone null control slowly back and forth There should be a point where your voice and any accompanying acoustic feedback disappears This is the null point 4 Readjust the VOX control Refer to the VOX control paragraph in this section Program Level Control Adjust the program level control to set the program audio level heard in the headset or panel speaker Note Do not force the trimpots past their stop points This
7. this speaker station or connected stations to power lines or transformers Relocate the offending unit or wiring If the cable run is exceptionally long consider adding and using the EB7 4W four wire option module Requires an additional four wire interface at the opposite end of the long run System feedback Acoustical Intercom level control at this station or another station is set too high Sidetone null control at this station or another station is not adjusted correctly Adjust Adjust Refer to the chapter Operation Channel not terminated Set the main station or power supply termination switch for that channel to the on position Channel switch set to an unconnected channel If only one intercom line is connected set option switch 1 to the on or closed position to link both channel switch positions to the same intercom line A headset extension cord was used Headset extension cords are not recommended VOX problems KB 702GM only Stays tripped amber light on Sensitivity set too high KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS Turn VOX sensitivity control in a counter clockwise direction 3 3 SYMPTOM CAUSE SOLUTION Will not trip with voice Sensitivity set too low Turn VOX sensitivity control in a clockwise direction Note VOX is intended for close in operation Excessive crosstalk High DC resistance has a
8. will damage them Speaker On Off Switch The speaker on off switch turns the front panel speaker on or off This switch also controls whether the tone alert is heard through the speaker The speaker volume will automatically dip whenever the talk function is set unless the VOX function is disabled Mic Select Switch KB 702GM only The mic select switch selects whether the panel microphone or the headset microphone is active If the VOX feature is enabled it is only operational when the panel microphone is active Channel Switch This switch selects whether the speaker station is active on intercom channel A or channel B Headset Connector The headset connector is located on the front panel All Clear Com headsets are recommended for use with the KB 702 The Clear Com handheld push to talk microphone will also plug into the headset connector The following is a description of the characteristics of a suitable headset KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS Mic Type Dynamic see technical specifications for details Headphone Dynamic see technical specifications for details The wiring of the headset is to be as follows Pin 1 Mic common Pin 2 Mic hot Pin 3 Headphone common Pin 4 Headphone hot The mic and headphone wiring in the headset cord must be individually shielded Do not connect pins 1 and 3 together Headset extension cords or headset Y cables are not recommended because they will increa
9. COMMUNICATION SYSTEMS CLEAR COM ENCORE KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS INSTRUCTION MANUAL KB 702 KB 702GM Two Channel Speaker Stations Instruction Manual 2007 Vitec Group Communications All Rights Reserved Part Number 8104927 Rev 2 Vitec Group Communications LLC 850 Marina Village Parkway Alameda CA 94501 U S A Vitec Group Communications 7400 Beach Drive Cambridge Research Park Cambridgeshire United Kingdom CB25 9TP Vitec Group Communications Room 1806 Hua Bin Building No 8 Yong An Dong Li Jian Guo Men Wai Ave Chao Yang District Beijing PR China 100022 Clear Com is a registered trademark of Vitec Group Communications The Clear Com Logo is a registered trademark of Vitec Group Communications CONTENTS on acca sore ral Merete AU did Dos ea Intr duetion A A 1 1 Descriptions ae eL 1 1 Operation Pp anne ee 1 2 Front Patel ke 1 2 Internal Adjustments and Connections eee eee 1 5 INSTALLATION 3 22 sands 2 MAINTENANCE 225 wa a ge air 3 Block Diagram for the KB 702 ann PA 3 1 Block Diagram for the KB 02GM sra anna nes 3 2 Troubleshooting eh ob pa 3 3 TECHNICAL SPECIFICATIONS 2 155 as aa RE UE RR RN 4 KB 702 KB 702GM Two Channel Speaker Stations 22 2 2220 4 A 5 Warranty Periods en EE UR ee 5 i Tec
10. E KB 702GM ge EQ Sidetone Mic GE LIM Null a olume Speakelgpeaker On Off Long Line o Headset 5 Output Talk B Balanced Program Input Call Alert Program Tone Level Level Microprocessor o Ch A a Sound TW Option Channel Switch T 4 Wire 5 Ch A did 16 VA Rectifier Power 2 Wire 4 Wird AO 4 Select qq pet iid CB d 4 Wire t 4 Wire o cha Ou pul Option J Figure 3 8 KB 702GM Block Diagram 3 2 KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS TROUBLESHOOTING SYMPTOM CAUSE SOLUTION System does not operate Talk button does not light No intercom connection to the KB 702 If the EB7 4W four wire option module is connected the KB 702 may not be receiving AC power Check connections and cable The KB 702 has an internal failure Unit requires servicing Speaker does not operate Talk button lights amber when pressed Speaker switch turned off volume knob turned all the way down or channel switch set to unused channel Adjust controls appropriately Speaker plug or wiring has come loose Make sure speaker is connected internally Plug P3 missing on circuit board Plug 23 must be installed in jack 3 if the EB TW or EB7 4W options are not used Hum or buzz in system Inductive pickup caused by close proximity of
11. IONS KB 702 KB 702GM TWO CHANNEL SPEAKER STA TIONS dBu is an absolute measurement 0 dBu is referenced to 0 775 volts RMS Panel Microphone Input KB 702GM Input Type Input Impedance Mic Limiter Threshold Mic Limiter Range Headset Microphone Input Input Type Input Impedance Mic Limiter Threshold Mic Limiter Range Program Line Input Maximum Level before Clipping Input Impedance Headset Output Load Impedance Output Impedance Output Limiter Threshold Maximum Output Level before Distortion Speaker Output Load Impedance Max Output Level before 1 Distortion Party Line Output Off Noise Output Impedance Party Line Input Crosstalk Max level before Clipping Sidetone Null Capability KB 702GM only KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS Electret 2 2dBu 3dB gt 15dB Dynamic gt 1KO 2dBu 3dB gt 15dB gt 20dBu gt 5KQ gt 80 lt 250 5dBu 3dB gt 17dBu gt 40 20dBu 2dBu lt 74dBu 10KO 60dB gt 12dBu gt 25dB 4 2 Frequency Response Panel Mic Party Line KB 702GM only Headset Mic Party Line Program Input Headset Out Program Input Speaker Out Party Line Headset Out Party Line Speaker Out Max Distortion Panel Mic Party Line KB 702GM only Headset Mic Party Line Program Input Headset Out Program Input Speaker Out Party Line Headset Out Party Line Speaker Out Noise Panel Mic Party
12. Line KB 702GM only Headset Mic Party Line Program Input Headset Out Program Input Speaker Out Party Line Headset Out Party Line Speaker Out Max Gain Panel Mic Party Line KB 702GM only Headset Mic Party Line Program Input Headset Out Program Input Speaker Out Party Line Headset Out Party Line Speaker Out Power Input Voltage Range Input Current Idle Input Current Max Internal Adjustments and Connections Intercom Line Program Input Option Switches Call Signal Jumper3 Call Alert Tone Level Control KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS 300 16KHz 3dB 300 15KHz 3dB 200 18KHz 3dB 200 18KHz 3dB 200 18KHz 3dB 200 18KHz 3dB lt 0 5 lt 0 5 lt 0 2 lt 0 5 lt 0 2 lt 0 5 lt 65dBu lt 70dBu lt 60dBu lt 60dBu 50dBu 50dBu 37dB 41dB 2dB gt 18dB gt 24dB gt 34dB gt 40dB 20 30 VDC lt 90mA lt 110mA Five terminal connector Three terminal connector Three DIP switches Three sets of options jumpers Level adjustment control Front Panel Connectors Panel Mic KB 702GM only 1 1 4 in 0 64 cm panel mounting jack Headset 1 XLR 4M Front Panel Controls amp Indicators KB 702GM Panel headset mic switch Program monitor level control Sidetone null control Talk button Call button Speaker ON OFF switch Channel select switch Speaker volume control VOX control VOX in
13. amaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 13 WARNING To reduce the risk of fire or electric shock do not expose this product to rain or moisture Please familiarize yourself with the safety symbols in Figure 1 When you see these symbols on this product they warn you of the potential danger of electric shock if the station is used improperly They also refer you to important operating and maintenance instructions in the manual KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS ET CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol alerts you to the presence of uninsulated dangerous voltage within the product s enclosure that might be of sufficient magnitude to constitute a risk of electric shock Do not open the product s case This symbol informs you that important operating and main tenance instructions are included in the literature accompanying this product Figure Safety Symbols EMC AND SAFETY The KB 702 and KB 702GM stations meet all relevant CE and FCC specifications set out below EN55103 1 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 1 Emissions EN55103 2 Electromagnetic compatibility Product family standard for audio video audio visual
14. dicator Front Panel Controls amp Indicators KB 702 1 Program monitor level control 1 Sidetone null control 1 Talk button 1 Call button 1 Speaker ON OFF switch 1 Channel select switch 1 Speaker volume control Environmental 32 122 F 0 50 C Dimensions KB 702 KB 702GM 8 25 in Wx 4 5 in Hx 1 75 in D 210 mm x 114 mm x 44 mm Weight KB 702 0 99 lbs 0 45 Kg KB 702GM 1 1 Ibs 0 50 Kg Notice About Specifications While Clear Com makes every attempt to maintain the accuracy of the information contained in its product manuals that information is subject to change without notice Performance specifications included in this manual are design center specifications and are included for customer guidance and to facilitate system installation Actual operating performance may vary KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS 4 3 4 4 KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS VGC offers 24 x 7 customer support if you have an Extended Warranty or Service Contract Return Material Authorization RMA numbers are required for all returns Both warranty and non warranty repairs are available WARRANTY LIMITED WARRANTY Vitec Group Communications VGC warrants that at the time of purchase the equipment supplied complies with any specification in the order confirmation when used under normal conditions and is free from defects in workmanship and materials during the warranty p
15. el 44 1223 815000 Email customerservicesEMEA vitecgroup com North America Canada Mexico Caribbean amp US Military Tel 1 510 337 6600 Email customerservicesUS vitecgroup com Asia Pacific amp South America Tel 1 510 337 6600 Email customerservicesAPAC vitecgroup com VGC has the right to inspect the equipment and or installation or relevant packaging NON WARRANTY REPAIRS AND RETURNS For items not under warranty you must obtain an RMA by contacting the User Support Center VGC representatives will give you instructions and addresses for returning your equipment You must pay all charges to have the equipment shipped to the support center and returned to you in addition to the costs of the repair EXTENDED WARRANTY If you purchase an Extended Warranty you are also given access free of charge to the User Support Center 24 hours a day 7 days a week You can purchase an extended warranty at any time during the first two years of ownership of the product The purchase of an extended warranty extends to five WARRANTY WARRANTY years the warranty of any product offered with a standard two year warranty The total warranty period will not extend beyond five years Any purchase of an extended warranty provides 24 x 7 customer support in addition to the warranty immediately upon purchase of the warranty extension Note VGC does not offer warranty extensions on UHF wireless intercom systems or on any product with a 1 yea
16. eriod During the warranty period VGC or any service company authorized by VGC will in a commercially reasonable time remedy defects in materials design and workmanship free of charge by repairing or should VGC in its discretion deem it necessary replacing the product in accordance with this limited warranty In no event will VGC be responsible for incidental consequential or special loss or damage however caused WARRANTY PERIOD The product may consist of several parts each covered by a different warranty period The warranty periods are Cables accessories components and consumable items have a limited warranty of 90 days Headsets handsets microphones and spare parts have a limited warranty of one year UHF wireless IFB products have a limited warranty of one year UHF wireless intercom systems have a limited warranty of three years All other Clear Com and Drake brand systems and products including beltpacks have a limited warranty of two years The warranty starts at the time of the product s original purchase The warranty start date for contracts which include installation and commissioning will commence from the earlier of date of the Site Acceptance Test or three months from purchase TECHNICAL SUPPORT To ensure complete and timely support to its customers VGC s User Support Center is staffed by qualified technical personnel Telephone and email technical support is offered worldwide by the U
17. g on screw terminal strip Male and female 3 pin XLR connectors are provided on the four gang V box for an inline connection to one of the intercom channels KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS The optional EB7 TW daughter board module can be installed to provide an interface to two intercom channels on a single microphone cable Also the EB7 4W four wire daughter board module is available to allow long distance connections using separate pairs of wire for send audio and receive audio The EB7 4W four wire option supports two channel operation The KB 702 and KB 702GM are compatible with all Clear Com party line intercoms OPERATION Normal operation of the KB 702 speaker station requires access only to the front panel controls The controls located elsewhere on the unit are intended to be set and forget in nature For intercom operation set the listen level control to the desired level and press the talk button when talking If a headset or handset is used set the sidetone control for each channel for the desired amount of sidetone in the earphone If a hand held push to talk mic is used or if the panel mic is used on the KB 702GM set the sidetone controls for minimum feed through to the speaker to prevent acoustic feedback FRONT PANEL The controls indicators and connectors found on the KB 702 and KB 702GM front panels are shown in the following figures and are described by the following text The numbers in the lef
18. ground return Use heavier cable add additional conductor s to ground return If the cable run is exceptionally long consider adding and using the EB7 4W four wire option module Multi channel cable pairs are not individually shielded Replace cable with individually shielded pairs Headset cables are not wired properly or shielded properly Correct wiring Use headsets with properly shielded wiring Refer to the chapter Operation Program signal sounds distorted Program level control set too high Turn the program level control counter clockwise Overload of program input circuit Reduce the gain of the program signal at the source such as an audio mixer Call signal does not function Excessive DC loading of intercom line Remove any audio transformers or other equipment that may be connected across the intercom line 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 Far too many terminations on the intercom line Check all main stations and power supplies to make sure each intercom channel is terminated at only one point Plug P missing on circuit board Plug P must be installed in jack JZ if the EB7 4W or EB7 TW options are not used 3 4 KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS TECHNICAL SPECIFICAT
19. hnical Support a Be 5 i Warranty Repairs and id the btn he Les bee dad 5 1 Non Warranty Repairs and Returns xo daa ds Hrn 5 ii Extended Warranty ests eoa deus Whole ates PE RE 5 ii Service en belies era du shiek 5 iii E I REP INO AE 5 iii KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS i KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS IMPORTANT SAFETY INSTRUCTIONS Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth SY aR BE Do not block any ventilation openings Install in accordance with the manufacturers instructions Please read and follow these 8 Do not install near any heat sources such as radiators heat registers stoves instructions before operating or other apparatus including amplifiers that produce heat this product 9 Only use attachments accessories specified by the manufacturer 10 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 11 Unplug this apparatus during lightning storms or when unused for long periods of time 12 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is d
20. m cause other than part defect and malfunction The VGC warranty does not cover any defect malfunction or failure caused beyond the control of VGC including unreasonable or negligent operation abuse accident failure to follow instructions in the manual defective or improperly associated equipment attempts at modification and repair not approved by VGC and shipping damage Products with their serial numbers removed or defaced are not covered by this warranty This warranty does not include defects arising from installation when not performed by VGC lightning power outages and fluctuations air conditioning failure improper integration with non approved components defects or failures of customer furnished components resulting in damage to VGC provided product This limited warranty is not transferable and cannot be enforced by anyone other than the original consumer purchaser This warranty gives you specific legal rights and you may have other rights which vary from country to country WARRANTY
21. n illuminates amber to indicate an active talk and the VOX light illuminates amber to indicate that the panel microphone is in use This will automatically dip the speaker 2 Call Button and Light Pressing the ca button will send a call signal on the selected channel All the call lights on that channel will then flash Call signals can also be sent while talking if required The call button will light when pressed or whenever a call signal is present on the selected channel An internal option jumper can be set to allow the call button to light when a call signal is present on either channel 3 Tone Alert An audible tone alert can be enabled to sound when a call signal is received on the selected channel or either channel This can be useful when the operator s attention has been drawn away from the KB 702 indicator panel The audible tone alert level can be adjusted or turned off by an internal control The tone alert will not sound if a call signal originates at the KB 702 station or if the speaker on off switch is turned off The tone alert KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS 3 10 plays through both the speaker and headset if the speaker on off switch is turned on Volume Control Turn this control to set the volume required on the speaker or headset This control does not affect the tone alert level or the program input level Sidetone Control Sidetone is the level of your own voice that you hear while talking on
22. nnector for intercom line connection This connector is intended to be unplugged from the circuit board when connecting the intercom line and then plugged back on when the wiring is completed The connections for each pin are visible on the circuit board when the connector is unplugged The pinout of this connector is as follows Pin 1 NC Pin 2 Channel A Audio Pin 3 Channel B Audio Pin 4 Power Pin 5 Ground Shield One Channel Cable Wiring Pin 5 6 o 3 3 Channel A Pin 11965 XLR Connector KB 702 Intercom Connector Figure 1 4 One Channel Cable Wiring Two Channel Cable Wiring Pin 5196 o 3 3 Pin 11965 KB 702 Intercom XLR Connector Connectors Figure 1 5 Two Channel Cable Wiring 17 Program Input A 3 terminal plug on connector provides the program input to the station Program is fed to the headset and speaker The level to the KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS 7 18 speaker or headset is controlled by the program level control The program input accepts a balanced or unbalanced line level audio signal If this input is connected to the stage announce SA output of a main station it can be used as a paging input Since the level of this input is independently adjustable from the intercom audio volume it can be used to override the intercom audio The pinout of the program input connector is as follows
23. r or 90 day warranty SERVICE CONTRACT VGC also offers service contracts that provide 24 x 7 telephone support advance replacements training proactive maintenance on site visits and no charge for repair or replacement of equipment For more information contact your authorized dealer distributor or sales representative LIABILITY THE FOREGOING WARRANTY IS VGC S SOLE AND EXCLUSIVE WARRANTY THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY OTHER REQUIRED IMPLIED WARRANTY SHALL EXPIRE AT THE END OF THE WARRANTY PERIOD THERE ARE NO OTHER WARRANTIES INCLUDING WITHOUT LIMITATION WARRANTIES FOR CONSUMABLES AND OTHER SUPPLIES OF ANY NATURE WHATSOEVER WHETHER ARISING IN CONTRACT TORT NEGLIGENCE OF ANY DEGREE STRICT LIABILITY OR OTHERWISE WITH RESPECT TO THE PRODUCTS OR ANY PART THEREOF DELIVERED HEREUNDER OR FOR ANY DAMAGES AND OR LOSSES INCLUDING LOSS OF USE REVENUE AND OR PROFITS SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES OR THE LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU IN ANY EVENT TO THE MAXIMUM EXTENT PERMITTED UNDER APPLICABLE LAW VGC S LIABILITY TO CUSTOMER HEREUNDER SHALL NOT UNDER ANY CIRCUMSTANCES EXCEED THE COST OF REPAIRING OR REPLACING ANY PART S FOUND TO BE DEFECTIVE WITHIN THE WARRANTY PERIOD AS AFORESAID This warranty does not cover any damage to a product resulting fro
24. se crosstalk between channels 11 Panel Mic Connector KB 702GM only Clear Com recommends the GM 9 and GM 18 plug in panel microphones for use with the KB 702GM The GM 9 is 9 in 23 04 cm long and the GM 18 is 18 in 46 08 cm long Both are the electret type The 1 4 in 0 64 cm phone jack on the microphone mates with the panel mic receptacle on the front panel of the KB 702GM To install a GM 9 or GM 18 microphone use the following steps 1 Remove the plastic plug from the jack if present 2 Check and unscrew the set screw in the mic mounting flange to make sure it is clear of the threads in the bushing 3 Screw the microphone into the bushing hand tight Turn the set screw on top of the mic mounting flange clockwise to lock the microphone in place 12 VOX Control KB 702GM only When the panel microphone is selected on the KB 702GM the VOX control should be adjusted for proper operation This control is located to the right of the panel mic connector Use a narrow flat blade screwdriver such as a greenie or tweaker for this adjustment When the adjustment is correctly set the VOX light illuminates amber when speaking into the panel microphone Turning the control clockwise makes the KB 702GM more sensitive to your voice The VOX feature can be disabled by turning the VOX control fully counterclockwise INTERNAL ADJUSTMENTS AND CONNECTIONS The controls and connectors found inside the KB 702 are shown in the following
25. ser Support Center The User Support Center is available to VGC s customers during the full course of their warranty period Telephone support during the warranty period will be offered at no charge between 09 00 and 17 00 according to the customer s local time zone In addition for customers who purchase an Extended Warranty or Service Contract 24 hour customer support is offered immediately upon purchase of such agreement For more information contact your authorized dealer distributor or sales representative Instructions for reaching VGC s User Support Centers are given below Telephone for Europe Middle East and Africa 49 40 6688 4040 Telephone for the Americas and Asia 1 510 337 6600 Email vitec support AVC de Once the standard warranty period has expired the User Support Center will continue to provide telephone support if you have purchased an Extended Warranty or Service Contract In these cases you will have access to telephone support 24 hours per day 7 days per week WARRANTY REPAIRS AND RETURNS Before returning equipment for repair contact a User Support Center to obtain a Return Material Authorization RMA VGC representatives will give you instructions and addresses for returning your equipment You must ship the equipment at your expense and the support center will return the equipment at VGC s expense For out of box failures use the following contact information Europe Middle East and Africa T
26. t VOX This circuit allows automatic alternate dipping of the panel microphone and the speaker in response to conversation Selectable two channel talking and or listening allows the operator to communicate on either of the intercom channels The dual action talk button is electronic momentary or latching Monitoring can be done through the headset the integral speaker or both at once The KB 702 offers both visual and audible call signaling to attract the attention of operators The remote mic kill RMK feature on main stations will turn off any open mics on the KB 702 A balanced program input allows the monitoring of external audio using the headset or speaker This program input can also be used as a paging function The KB 702 speaker station accepts dynamic headsets A sidetone control allows the operator to vary the level of his her own voice as heard in the headset and speaker The integral speaker can be turned on or off by a convenient front panel switch An automatic speaker dipping circuit will lower the level of the speaker whenever the talk button is activated This feature helps minimize acoustical feedback The KB 702 receives power from the Clear Com intercom line The unit mounts either in a standard four gang electrical outlet box or in an optional Clear Com four gang V box The extra thick front panel and compact surface mount circuitry maintains legendary Clear Com ruggedness The two intercom channels connect to a plu
27. t column refer to Figure 1 1 and Figure 1 2 E o 00 gt Clear Com Channel Select W N D Volume Headset p Program Level rs o MY Off On Sidetoi Talk Speake 2 Channel Speaker Station KB 702 Y Figure 1 1 KB 702 Front Panel KB 702 KB 702GM TWO CHANNEL SPEAKER STATIONS 5 Micrdphone Channel S lect VO A Head O 7 Headset D Level Sidetone 9 Speaker o off On Talk 2 Channel Speaker Station KB 702GM Figure 1 2 KB 702GM Front Panel 1 Talk Button and Indicator The za k button activates the microphone feed to the selected intercom channel It has a dual action momentary or latching depending upon how the button is pressed If desired the latching function can be defeated using an internal option switch The following describes the various functions of this button e MOMENTARY Press and hold the za k button while you are speaking Release it when you are finished The button lights amber when the talk function is active and blue when it is inactive e LATCHING Press the button quickly to latch the talk function Press the button again to turn off the talk function e VOX INDICATION On the KB 702GM when the VOX feature is enabled the talk butto
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