Clear-Com Cellcom Instruction Manual

CLEAR-COM ENCORE EF-701M INTERFACEINSTRUCTION MANUAL

viii EF-701M INTERFACEEMC AND SAFETYThe EF-701M Interface meets all relevant CE and FCC specifications set out below:EN55103-1 Electromagnetic compat

EF-701M INTERFACE 1-1OPERATIONINTRODUCTIONCongratulations on choosing this Clear-Com product. Clear-Com was established in 1968 and remains the market

1-2 EF-701M INTERFACEThe EF-701M 4-Wire and Matrix Direct Interface is a flexible and powerful tool for connecting 2-wire intercom systems or station

EF-701M INTERFACE 1-3Figure 1-1: Connecting a party-line channel to a Matrix intercomCONVERTING A PARTY-LINE CHANNEL TO 4-WIRE AUDIO The EF-701M Inter

1-4 EF-701M INTERFACEconverted to go over the chosen transmission medium, it must be reconverted to 2-wire mode to properly connect to the party-line

EF-701M INTERFACE 1-5in Figure 1-3. At the other end of the fiber there is another EF-701M unit and PL system with walkie-talkies interfaced through a

1-6 EF-701M INTERFACEhorizontally in one-rack unit (1RU) of space and will offer sufficient vertical clearance to accommodate a variety of mounting m

EF-701M INTERFACE 1-7system that the EF-701M connects to via the DB-15) must accept line-level (-15 dBu to +4 dBu) 4-wire audio and, if call signal is

1-8 EF-701M INTERFACEFRONT PANEL CONTROLS Figure 1-5: Front panel of an EF-701M unitLocal Send controls the audio signal level from the local 2-wire

EF-701M INTERFACE 1-9Sidetone Null Adjustment This set of three trimpots includes R=Resistance, L=Inductance, and C=Capacitance. These compensate for

EF-701M Interface Instruction Manual© 2007 Vitec Group Communications. All rights reserved.Part Number 810363Z Rev. 1Vitec Group Communications, LLC.

1-10 EF-701M INTERFACEREAR PANEL SETTINGS AND CONNECTORS Figure 1-6: Rear panel of an EF-701M unitMode-Switch Settings The two switches on the rear

EF-701M INTERFACE 1-11Table 1-1: EF-701M’s mode-switch settings3-Pin XLR Connector (Party Line I/O)The female 3-pin XLR jack on the EF-701M’s back pan

1-12 EF-701M INTERFACEDB-15 Connector When mode-switch 1 is set to 4-wire mode (OFF), the DB-15 connects to additional interfaces or converters (or t

EF-701M INTERFACE 2-1INSTALLATION CONNECTING THE EF-701M INTERFACECONNECTING THE EF-701M TO A MATRIX PORTTo connect the EF-701M directly to a Clear-Co

2-2 EF-701M INTERFACENote that when the EF-701M is set to Matrix Direct mode (mode-switch 1 ON), the internal baud rate jumpers have no effect. The t

EF-701M INTERFACE 2-3The four pairs of cable used for full operation include one each for audio in and audio out and one each for RS-422 data in and d

2-4 EF-701M INTERFACEFigure 2-1: Connector Pinout Configurations129310411512613714815- RS-422 Local Receive- RS-422 Local Transmit+ RS-422 LocalRecei

EF-701M INTERFACE 2-5CONNECTING THE EF-701M TO RTS-TW EQUIPMENTTo use the EF-701M with RTS-TW equipment you can either set the mode switch to the “RTS

2-6 EF-701M INTERFACELEVELSEF-701M front-panel controls affect the following “listen levels”: the sidetone and volume at the users’ stations or beltp

EF-701M INTERFACE 2-7NULLING“Sidetone” is the sound of the operator’s own voice in his or her headset or speaker. With interfaces, it is necessary to

EF-701M INTERFACE iCONTENTSOPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Introduction . . . . . . . . .

2-8 EF-701M INTERFACEAdjusting the NullNormally, the following adjustment is made once during installation. (If the configuration of the local party-

EF-701M INTERFACE 2-9Troubleshooting Tips for Nulling • If the “R” control is turned fully counterclockwise, the line has multiple terminations or a r

2-10 EF-701M INTERFACEINTERNAL ADJUSTMENTSThe only user-adjustable internal setting is selection of the baud rate for the RS-422 data. The factory-se

EF-701M INTERFACE 2-116.Lift off the cover. 7.Make the necessary adjustments of jumpers P3 and P4 (shown in the following table).To set a jumper to th

2-12 EF-701M INTERFACETRANSMISSION METHODSDIRECT CONNECTION There are many instances where twisted-pair cable is available for audio connections. Thi

EF-701M INTERFACE 2-13Simply connect the 4-wire audio and 4-wire data between EF-701M units utilizing this cable. This will form a direct connection b

2-14 EF-701M INTERFACEThere are two basic modes of fiber-optic transmission. In a multimode fiber, the light travels through the fiber via multiple p

EF-701M INTERFACE 2-15Just as with analog cable, the longer the fiber-optic cable, the more signal degradation occurs. Cable splices and connectors al

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EF-701M INTERFACE 3-1MAINTENANCETROUBLESHOOTING TIPSListed below are symptoms, causes, and solutions for some of the more common problems that may occ

ii EF-701M INTERFACEINSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Connecting the EF-701M Interface . .

3-2 EF-701M INTERFACEAudio Troubleshooting Tips Symptom Cause SolutionSquealing feedback, levels too high, distortion, call signal stays on.The local

EF-701M INTERFACE 3-3Levels don’t match from one end to the other. 1. Additional level adjustments may be available on the modems.2. Clear-Com/RTS jum

3-4 EF-701M INTERFACEData Troubleshooting TipsSymptom Cause SolutionData LED is off even though units are connected at each end.1. Problem in the wir

EF-701M INTERFACE 3-5Call signal is locked on at one end. 1. Local PL problem. 2. DB-15 is wired incorrectly at other end. This will happen if an RTS-

3-6 EF-701M INTERFACENulling Troubleshooting TipsSymptom Cause SolutionNo audio; green LED is off. EF-701M is not receiving power. EF-701M units at

EF-701M INTERFACE 3-7Unsatisfactory null. 1. Unstable PL system due to excessive cabling, a high number of stations, transformers connected across the

3-8 EF-701M INTERFACEBlock DiagramFigure 3-1: EF-701M Block DiagramFigure 3-2: EF-701M Block Diagram4-WireInputHybrid Null4-WireOutputGainAdj.GainAdj

EF-701M INTERFACE 4-1GLOSSARYCategory 3, 5, 5e, or 6 cable: EIA/TIA 568 category specification relating to the performance of network cabling. All are

4-2 EF-701M INTERFACEThe EF-701M Interface connects 2-wire intercom systems or stations together over various 4-wire transmission media. In doing so

EF-701M INTERFACE 4-3Null: (noun) 1. Adjustment on the intercom that controls the amount of sidetone heard by the operator. 2. The degree of sidetone

EF-701M INTERFACE iiiData Troubleshooting Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Nulling Troubleshooting Tips .

4-4 EF-701M INTERFACE

EF-701M INTERFACE 5-1SPECIFICATIONSEF-701M TECHNICAL SPECIFICATIONSdBu is an absolute measurement. 0 dBu is referenced to 0.775 volts RMSCLEAR-COM FO

5-2 EF-701M INTERFACEDistortionParty Line - Matrix <=0.5%Matrix - Party Line <=0.5%NoiseParty Line - Matrix <=-50dBuMatrix - Party Line <

EF-701M INTERFACE 5-3Front Panel Connectors and ControlsTS1 Earphone (1) 3.5mm Jack SocketLevel Adjust (2) Rotary ControlNull Adjust (3) Rotary Contro

5-4 EF-701M INTERFACE

WARRANTY iLIMITED WARRANTYVitec Group Communications (VGC) warrants that at the time of purchase, the equipment supplied complies with any specificati

ii EF-701M INTERFACE• Cables, accessories, components, and consumable items have a limited warranty of 90 days.• Headsets, handsets, microphones, and

WARRANTY iiiInstructions for reaching VGC’s User Support Centers are given below.Telephone for Europe, Middle East and Africa: +49 40 6688 4040 or +44

iv EF-701M INTERFACENorth America, Canada, Mexico, Caribbean & US Military Tel: +1 510 337 6600 Email: [email protected] Pa

WARRANTY vEXTENDED WARRANTYYou can purchase an extended warranty at the time of purchase or at any time during the first two years of ownership of the

iv EF-701M INTERFACE

vi EF-701M INTERFACEOF USE, REVENUE, AND/OR PROFITS). SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES OR

WARRANTY viiThis limited warranty is not transferable and cannot be enforced by anyone other than the original consumer purchaser. This warranty gives

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EF-701M INTERFACE vIMPORTANT SAFETY INSTRUCTIONS1. Read these instructions.2. Keep these instructions.3. Heed all warnings.4. Follow all instructions.

vi EF-701M INTERFACE11. Unplug this apparatus during lightning storms or when unused for long periods of time.12. Refer all servicing to qualified se

EF-701M INTERFACE viiFigure 1: Safety SymbolsCAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENThis symbol alerts you to the presence of uninsulated dangerousvo