CLEAR KB-702GM user manual

User manual for the device CLEAR KB-702GM

Device: CLEAR KB-702GM
Category: Speaker
Manufacturer: CLEAR
Size: 0.72 MB
Added : 6/7/2014
Number of pages: 28
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Abstracts of contents
Summary of the content on the page No. 1

CLEAR-COM ENCORE
KB-702/KB-702GM TWO-CHANNEL SPEAKER STATIONS
INSTRUCTION MANUAL

Summary of the content on the page No. 2

KB-702/KB-702GM Two-Channel Speaker Stations Instruction Manual © 2007 Vitec Group Communications All Rights Reserved Part Number 810492Z 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, P.R. China 100022 Clear-Com is a regi

Summary of the content on the page No. 3

CONTENTS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Front Panel . . . . . . . . . . . . . . . . . . . .

Summary of the content on the page No. 4

KB-702/KB-702GM TWO-CHANNEL SPEAKER STATIONS ii

Summary of the content on the page No. 5

IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. Please read and follow these 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. instructions be

Summary of the content on the page No. 6

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 1: Safety Symbols EMC AND SAFETY The KB-702 and KB-702GM stations meet all relevant CE and FCC

Summary of the content on the page No. 7

OPERATION 1 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-C

Summary of the content on the page No. 8

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

Summary of the content on the page No. 9

11 12 8 9 3 2 4 Microphone Channel Select VOX A B Volume Panel Mic Call Headset Headset Program Level Sidetone Speaker Off On Talk 2-Channel Speaker Station K KB-702GM B-702GM 1 10 5 7 6 Figure 1-2: KB-702GM Front Panel 1. Talk Button and Indicator: The talk 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 opti

Summary of the content on the page No. 10

plays through both the speaker and headset if the speaker on/off switch is turned on. 4. 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. 5. Sidetone Control: Sidetone is the level of your own voice that you hear while talking on the intercom. Setting a comfortable level of sidetone will ensure that the intercom line sounds alive and also helps you modulate your voice relati

Summary of the content on the page No. 11

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 increase crosstalk between ch

Summary of the content on the page No. 12

18 17 P3 Must be installed if no option P2 Must be installed if no option P1 Call P1 Call on on Both Selected 15 16 View from top of KB-702 Front Panel 13 14 Figure 1-3: Internal Adjustments and Connections 13. 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. 14.

Summary of the content on the page No. 13

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 connector 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

Summary of the content on the page No. 14

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: Pin 1 --- Ground (shield) Pin 2 --- + Signal Pin

Summary of the content on the page No. 15

INSTALLATION 2 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 side

Summary of the content on the page No. 16

KB-702/KB-702GM TWO-CHANNEL SPEAKER STATIONS 2-2

Summary of the content on the page No. 17

MAINTENANCE 3 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/ Sidetone LIM Intercom Null Speaker Speaker Volume On/Off Headset Speaker Mic Dip Mic Long Line Mute Headset Ou

Summary of the content on the page No. 18

BLOCK DIAGRAM FOR THE KB-702GM Headset EQ/ Sidetone Mic LIM Intercom Null Speaker Speaker Volume On/Off Mic Select Speaker Dip Panel Mic Mic Dip / Mute Long Line Headset VOX Output Talk/ VOX Talk Balanced Program Red / Program Mute Green Input Call Alert Program Tone Level Level Microprocessor Call Call Single Common Light Chan. Latch +30 VDC Call Send & Disable Power Receive Ch. B RMK Ch. A Ground TW Option Channel Switch Ch. B 4-Wire Input Ch. A Rectifier Power 16 VAC 2-Wire / 4-Wire Select C

Summary of the content on the page No. 19

TROUBLESHOOTING SYMPTOM CAUSE SOLUTION System does not operate. Talk No intercom connection to the Check connections and cable. button does not light. KB-702. If the EB7-4W four-wire option module is connected, the KB-702 may not be receiving AC power. The KB-702 has an internal failure. Unit requires servicing. Speaker does not operate. Talk Speaker switch turned off, volume Adjust controls appropriately. button lights amber when knob turned all the way down, or pressed. channel switch set

Summary of the content on the page No. 20

SYMPTOM CAUSE SOLUTION Will not trip with voice. Sensitivity set Turn VOX sensitivity control in a too low. clockwise direction. Note: VOX is intended for close-in operation. Excessive crosstalk High DC resistance has a ground Use heavier cable; add additional return. 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 Replace cable with individually individually shielded.


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