Encore™ MS-702 Two-Channel Main Station Instruction Manual
Document Reference Encore MS-702 Two-Channel Main Station Instruction Manual Part Number: 810342Z Rev. 4 Legal Disclaimers Copyright © 2013 HME Clear-Com Ltd. All rights reserved. Clear-Com, the Clear-Com logo and Encore are registered trademarks or trademarks of HM Electronics, Inc. The software described in this document is furnished under a license agreement and may be used only in accordance with the terms of the agreement.
CONTENTS IMPORTANT SAFETY INSTRUCTIONS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Front Panel . . . . . . . . . . . . . . . .
ii Two-Channel Main Station
IMPORTANT SAFETY INSTRUCTIONS Please read and follow these instructions before operating this product. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
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 maintenance instructions are included in the literature accompanying this product.
OPERATION INTRODUCTION The MS-702 two-channel main station is a powerful, yet user-friendly unit that can serve as the heart of a Clear-Com system. Congratulations on choosing this Clear-Com product. Clear-Com was established in 1968 and remains the market leader in providing intercoms for entertainment, broadcast and industrial applications. The ruggedness and high build-quality of Clear-Com products defines the industry standard.
speaker when the announce button, talk buttons or program interrupt are activated. This feature helps minimize feedback. The MS-702 also incorporates a dual-channel program interrupt system (IFB). When activated, one or more stations can interrupt the program audio to either another intercom station or a talent wearing Clear-Com’s wired or wireless talent receivers. Clear-Com’s stand-alone IFB system can also be connected to this station.
18 19 5 12 14 9 7 8 6 2 8 26 10 5 1 6 7 3 11 Figure 1: Front Panel 1. Talk Buttons: Each channel has an illuminated talk button for activating the microphone feed to that channel. Each talk button has a dual action (momentary or latching feature) depending on how the button is pressed. If desired, the latching function for each channel can be defeated using the option switches on the rear panel.
button will flash while the call button is pressed, indicating the presence of a call signal on the line. 3. Tone Alert: An audible tone alert can be enabled to sound when a call signal is received on either channel. This can be useful when the operator's attention has been drawn away from the MS-702 indicator panel. Press the tone alert button to alternately enable or disable the audible tone alert. The button illuminates blue when the audible tone alert is enabled.
7. Program ON-OFF-INTRPT Switches: The program on-off-intrpt switches are used to manually or automatically control program audio feed into the intercom lines. The settings are as follows: • ON: The channel will receive program audio when the switch is set to on. The audio level for each channel can be adjusted with the program level trimpots. • OFF: The channel will not receive program audio when the switch is set to off.
pressed to quiet the line in this situation. Those needing to communicate can then set their talk functions to on as needed. Note: The RMK switch can only function if the MS-702 main station is powering all of the stations in the system. The switch momentarily interrupts power to the other beltpacks and stations in the system. If there are other power supplies or main stations in the system, then the RMK switch cannot interrupt power and therefore cannot work. 12.
1. Check and unscrew the set screw in the mic mounting flange to make sure it is clear of the threads in the bushing. 2. Screw the microphone into the bushing hand tight. 3. Turn the set screw on top of the mic mounting flange clockwise to lock the microphone in place. 19. Headset Connector: The headset connector is located on the front panel. All Clear-Com headsets are recommended for use with the MS-702.
in normal operation. The default position of the switches is in the off (up) position. The function of each switch is as follows: 1. MOM TALK A: Setting the momentary talk A switch to the on position will disable the latching function of the channel A talk button. In this mode, the talk button must always be held in continuously while the operator is talking on channel A. 2. MOM TALK B: Setting the momentary talk B switch to the on position will disable the latching function of the channel B talk button.
17. Power Switch: The power switch can be used to turn AC power to the MS-702 on and off. When in the on position, the front-panel talk buttons illuminate blue. 20. AC Power Connection: An IEC type 320 connector is provided to interface to the appropriate AC power cord to be used. Voltages from 90 to 240 VAC at 50 or 60 Hz are acceptable. The MS-702 will automatically adjust for the power applied, so there are no manual switches to set power line voltage or frequency. 21.
Pin 1 --- Ground (shield) Pin 2 --- - Signal Pin 3 --- + Signal The audio output is balanced and transformer isolated. It has a 600 ohm impedance and a nominal output level of 0 dBV. A shielded twisted pair cable should be used in the cable wired to this connector. 24. Relay Out: A dry set of relay contacts is provided through a 1/4-in. (0.64 cm) jack to activate external switching as needed when the announce button is pressed.
8. Connect the unit to AC mains electricity. RE-SETTING PROGRAM INTERRUPT OPTIONS When you set one of the front-panel Program ON-OFF-INTRPT switches to the INTRPT position, any talk signal activated on that channel interrupts the program audio during the talk signal. You can change this option so that activating a call signal, rather than a talk signal, interrupts the program audio for the duration of the signal. You do this by re-setting an internal jumper on the station’s internal circuit board.
In the default position, the jumper plug covers pins 1 and 2, which causes talk signal activation, rather than call signal activation, to interrupt the program audio. JP5, for channel A 1 2 3 Talk signals interrupt program audio JP6, for channel B 1 Call signals 2 3 interrupt program audio FOR EITHER CHANNEL: To interrupt program audio during talk signals, place jumper plug over pins 1 and 2. To interrupt program audio during call signals, place jumper plug over pins 2 and 3.
INSTALLATION 1. Unpack the unit and inspect for any damage that may have occurred in shipping. 2. Connect the proper AC mains cable. 3. Install the MS-702. Note: For additional information, refer to the Clear-Com System Installation Manual. 4. Connect the AC to the mains circuit. Note: Information on the mains power requirement is given on the underside of the unit. 5. 6. 7. 8. Connect the intercom lines. Set the two termination switches on the rear panel to on.
Clear-Com® MS-702 Two-Channel Main Station Instruction Manual 2-2
MAINTENANCE INTRODUCTION This chapter provides maintenance information, including a block diagram and troubleshooting tips. 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.
TROUBLESHOOTING TIPS SYMPTOM System does not operate. Blue talk buttons do not illuminate and short lights do not illuminate. CAUSE SOLUTION No AC power to the MS-702. Make sure the power switch on the rear panel is turned on. Check the AC connection and cable. Plug into a dependable AC source. The MS-702 has an internal power supply failure. Unit requires servicing. System does not operate when power switch is turned on. Blue talk lights and red short lights wink.
SYMPTOM CAUSE 10 Ohm chassis ground resistor is open. SOLUTION Check the DC resistance for 10 Ohms between the chassis and pin #1 of any intercom connector. If this condition occurs, it is because the system ground came into contact with something that was “HOT” with respect to the power supply earth ground. Carefully check the system ground and AC distribution in the area. Warning: This is a potentially dangerous situation. A shock hazard may exist between a remote station headset and ground.
SYMPTOM CAUSE SOLUTION 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.
SPECIFICATIONS dBv is an absolute measurement. 0 dBv is referenced to 0.775 V RMS. Headset Microphone Pre-Amp Input Type: Impedance: Input Level: Frequency Response Gain from headset mic to intercom line: Panel Microphone Pre-Amp Input Type: Input Level: Frequency Response Gain from panel mic to intercom line: Dynamic 1KΩ -55 dBV nominal; -10 dBV max.
Short Circuit Reset Time: Hum and Noise: < 15 s < -80 dBv Station Capacity Capacity: Maximum of 60 headset stations or 20 speaker stations, distributed over both channels Rear Panel Connectors Intercom: Announce Out: Announce Relay: Program: Hot Mic / IFB Interface: AC Power: (6) XLR-3M (3 per channel) (1) XLR-3M (audio) (1) 1/4 in. (0.64 cm) phone jack (relay) (1) XLR-3F (1) 1/4 in. (0.
Weight 5.0 lbs. (2.75 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.
4-4 Clear-Com® MS-702 Two-Channel Main Station Instruction Manual
LIMITED WARRANTY This document details the Clear-Com Standard Limited Warranty for all new products for sale within all regions with the exception of Military, Aerospace, and Government (MAG). EXCEPT AS SET FORTH HEREIN ("LIMITED WARRANTY"), CLEAR-COM MAKES NO OTHER WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT OF THIRD PARTY RIGHTS, OR FITNESS FOR A PARTICULAR PURPOSE, ALL OF WHICH ARE EXPRESSLY DISCLAIMED. 1.
(5) All software products, including Concert (Client and Server), ECS, Production Maestro and Logic Maestro are warranted for one year and shall substantially conform to published specifications. The media on which the Software is furnished is warranted to be free of defects in material and workmanship (under normal use) for a period of one year. (6) Any Clear-Com products that are listed within the last time buy period have the same Limited Warranty for their type 1.i 1 - 1.i.5 as above.
h) Software Upgrades i) Software Upgrades include new Features and/or Functional Enhancements and are not included as part of the Standard Warranty but may be purchased at the published rates. ii) Note: In the absence of a Software Update containing a program correction and no available workaround to mitigate the problem, at the discretion of Service, Sales, Engineering, or Product Management, the Customer may be provided a Software Upgrade under warranty. 2. Exclusions.
Clear-Com® Standard Limited Warranty iv
