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R M - 7 0 2 T W O - C H A N N E L R E M O T E S T A -

3 - 1

MAINTENANCE

INTRODUCTION

This chapter provides maintenance information.

Figure 3-18: Audio Block Diagram for the RM-702

RM-702

Headset

Mic

Panel Mic

Gain

Panel

Mic

Jack

XLR4

Main

Pgm

Program

Level A

Output

Hot Mic /

IFB Out

Main

Pgm

Listen

Program

Level

XLR4

Headset

Limiter

Line

Length

Sidetone

Null

Intercom

Line A

Program

Level B

Listen

Line

Length

Sidetone

Null

Intercom

Line B

Main

Pgm

Main

Pgm

Main

Pgm

Power A

Channel A

XLRs (2)

Power B

Channel B

XLRs (2)

+30VDC

Call

Signal

Send &

Receive

System Logic

Front Panel

Switches,

Buttons, &

Indicators

Annc Rly

Control

To All

Switches

Intercom

Line A

A
B

Intercom

Lines

Main

Pgm

Footswitches

Intercom

Line B

Spkr

On/Off

Mute

Mic

Limiter

Option Switches

Содержание ENCORE RM-702

Страница 1: ...RM 702 TWO CHANNEL REMOTE STATION I N S T R U C T I O N M A N U A L CLEAR COM ENCORE ...

Страница 2: ...e engineering No part of this document may be reproduced in any form by any means without prior written authorization of Clear Com an HME Company Clear Com Offices are located in California USA Cambridge UK Montreal Canada and Beijing China Specific addresses and contact information can be found on Clear Com s corporate website www clearcom com Clear Com Contacts Americas and Asia Pacific Headquar...

Страница 3: ... Station Powering 2 3 Cable Considerations 2 3 Description of Front panel Connectors 2 4 Headset Connector Front Panel 2 4 Panel Mic Connector Front Panel 2 4 Description of Rear Panel Connectors 2 5 Intercom Line Connectors Rear Panel XLR 3 2 Male 2 Female 2 5 IFB Hot Mic Rear Panel 1 4 Inch Phone Jack 2 5 Accessory Rear Panel DB 15F 2 6 Description of Options and Adjustments 2 6 DIP Switch Optio...

Страница 4: ...ed to Studio Output 2 17 Remote Control of Talk Switches 2 18 Inadequate Side tone Adjustment 2 18 MAINTENANCE 3 1 Introduction 3 1 TECHNICAL SPECIFICATIONS 4 1 RM 702 Two Channel Station 4 1 LIMITED WARRANTY 5 I Warranty Period 5 i Technical Support 5 i Warranty Repairs and Returns 5 ii Non Warranty Repairs and Returns 5 ii Extended Warranty 5 ii Service Contract 5 iii Liability 5 iii ...

Страница 5: ...paratus 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 damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been expo...

Страница 6: ... 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 CAUTION RISK OF ELECTRIC SHO...

Страница 7: ...rophone cable using 3 pin XLR connectors One wire carries the DC power from a main station or power supply to all remote stations and the other wire carries two way duplex audio information The shield acts as a common ground One termination per channel is needed throughout the intercom network and is usually located in the main station or power supply Clear Com is a distributed amplifier system ea...

Страница 8: ...ability The latching feature may be disabled if desired The talk buttons can also be remote controlled for footswitch or other use Monitoring activity is possible through the speaker or headset or both at once The RM 702 features visual call signaling to attract the attention of operators who have removed their headsets or turned off their speakers This station accepts dynamic headsets The station...

Страница 9: ...the talk function alternately turning it on or off MOMENTARY Pressing the button for longer than 1 4 second will turn the button press into a momentary function such that when the button is released the talk function will turn off In any case the talk function is activated all of the time the button is pressed TALK INDICATION The talk button illuminates yellow when a talk is activated and blue whe...

Страница 10: ...letely off SIDETONE CONTROLS Each channel has a sidetone null control This control sets the amount of the microphone that is heard in the earphone from that channel This control is a true hybrid null control and therefore is sensitive to changes in line loading For headphone use it is best to find the null for a given channel and then rotate the control clockwise to obtain the desired sidetone lev...

Страница 11: ...se the microphone input to directly talk to a system external to the intercom such as a paging speaker amplifier in another room A dry set of relay contacts on the rear panel is also available for activating external switching as needed when the announce button is pressed The button illuminates amber when pressed Pressing the announce button momentarily disables any active talks Active talk circui...

Страница 12: ...R M 7 0 2 T W O C H A N N E L R E M O T E S T A T I O N 1 6 ...

Страница 13: ...line connection The following subjects are discussed Intercom line connection Line termination Station powering Cable considerations INTERCOM LINE CONNECTION The RM 702 provides male and female XLR 3 connectors for each intercom line which are looped through CONNECTING OR ISOLATING RM 702 CHANNELS An internal jumper in the RM 702 unit allows you to defeat the power channel isolation of the unit as...

Страница 14: ...e main circuit board locate the JP4 three pin jumper The jumper is located on the rightmost upper portion of the circuit card when viewed from the front of the unit The label J4 appears behind the jumper A jumper plug is placed over pins 2 and 3 4 Do one of the following To connect the two channels place the jumper plug over pins 1 and 2 Figure 2 3 Jumper Set to Connect Channels To isolate the two...

Страница 15: ...n stations and power supplies provide switch selectable termination networks on all intercom output lines It is up to the user to determine where the termination will be provided An unterminated line will cause excessive levels possible oscillation of line drivers and severe unbalance of hybrid null networks A double or multiple terminated line will cause low levels and severe unbalance of hybrid ...

Страница 16: ...lly shielded is acceptable for use in multi channel systems For cross talk considerations the shields must be tied together on both ends of the cable to produce the lowest possible DC path for ground return DESCRIPTION OF FRONT PANEL CONNEC TORS HEADSET CONNECTOR FRONT PANEL Note The following is a description of a recommended headset Mic Type Dynamic for details see the technical specifications W...

Страница 17: ... jack marked IFB HOT mic provides an output signal from the selected microphone This output is intended to work with Clear Com s MA 704 IFB control panel A control signal into this connector from the MA 704 causes all active talks from the station to cease and only sends the IFB output The pin description of the connector is as follows Tip Microphone audio output Ring Control signal 15 VDC Sleeve ...

Страница 18: ...the rear of the connector DESCRIPTION OF OPTIONS AND ADJUST MENTS DIP SWITCH OPTION SWITCHES REAR PANEL Twelve DIP switches on the rear panel enable various options in the station PROGAM ENABLE A Enables program audio on channel A when set to the on position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ACCESSORY CONNECTOR DB 15F Foot Switch Common Foot Switch B Foot Switch A GND Announce Relay N C Contact ...

Страница 19: ... the intercom line s This will allow announcements to be made without being heard over the intercom channels INTRPT EXT IFB When the hot mic output is connected to Clear Com s IFB system and the interrupt external IFB switch is set to the on position pressing a key on the IFB system will disconnect the selected headset or panel microphone from the intercom line s This allows the RM 702 microphone ...

Страница 20: ...t board To re set the program interrupt option 1 Please observe anti static procedures Static electricity can damage a circuit card Please ground yourself and tools before touching the circuit card 2 Remove the cover of the RM 702 by removing the eight Phillips screws 3 On the main circuit board locate one of the following For channel A The JP5 three pin jumper located in the center of the circuit...

Страница 21: ... panel microphone and a headset microphone have the same volume when worked at about 2 in 5 08 cm To adjust the panel microphone gain you must open the unit Ground yourself and tools before touching the circuit board as circuit boards can be damaged by static electricity Remove the top cover of the unit and locate the jumper labeled R161 It is located on the leftmost side of the circuit board towa...

Страница 22: ...switch To change the setting of the line length compensation DIP switches move either the long line A or long line B DIP switch to the on position for intercom lines longer than 1 000 ft 304 8 PROGRAM FEED ON ANNOUNCE You can set up the announce feature so that program audio is sent out on the announce line as well as the announce audio You set this option up by using an internal jumper on the cir...

Страница 23: ...R M 7 0 2 T W O C H A N N E L R E M O T E 2 1 1 4 Remove the jumper plug from the pins and place it over pins 1 and 2 This is the on position Program audio will now accompany the announce audio ...

Страница 24: ...nected to the program input of station 2 It provides a program feed from the studio via a dial up telephone line Its DIP switch options are set to insert program audio on channel B and interrupt the program when a call signal is present on channel B The option DIP switches for placing a call signal on channel B is set on both RM 702s Now whenever either RM 702 initiates a talk to the announcers it...

Страница 25: ...nnel B is set on both RM 702s Now either RM 702 will interrupt the program feed to the announcer when a talk is initiated from it to the announcers A PA amplifier is connected to the announce output of the first RM 702 such that the operator of that station could talk directly to everyone in the studio ACTUAL APPLICATIONS This section describes detailed instructions for various types of applicatio...

Страница 26: ...rcom connectors are as follows Pin 1 Ground shield Pin 2 Power Pin 3 Audio The following application shows the practical connection of the intercom lines in the block diagram of the cable school television studio Figure 2 12 Connecting a Small Cable School Television Studio The entire system is wired using male female microphone cables looped through each station except for the HB 702s The HB 702 ...

Страница 27: ...t either the A or B potentiometer marked Program Level located under either the A or B channel s volume knob to the lowest setting This control affects the program volume going out onto the selected intercom line Feeding Channel A or B Intercom Line To feed the A or B channel with program material Connect the program source to the proper pins on the DB 15 Make sure the appropriate A or B rear pane...

Страница 28: ...alanced input connect the signal to pin 8 and connect the shield to pins 15 and 7 Connecting Party Line Products As Program Sources If other Clear Com products such as an AC 701 telephone interface are to be used as a program source directly use the following interconnection cable Pin 14 of the DB 15 accessory connector provides 30 VDC to power the external device Connecting pins 7 and 15 together...

Страница 29: ...R M 7 0 2 T W O C H A N N E L R E M O T E 2 1 7 Figure 2 14 Connecting Party Line Products As Program Sources ...

Страница 30: ...k with the PIC 4704 An MA 704 is located at each location where program interrupt is to be initiated Each MA 704 has its own panel mounted microphone which when mounted next to an intercom station with a panel mounted microphone causes panel congestion with two microphones at a single location The RM 702 has a 1 4 in 0 64 cm phone jack output on its rear panel intended to connect directly to an MA...

Страница 31: ...station Isolated relay contacts are also available for controlling some external devices such as a PA amplifier to another room To connect to the announce output connect a shielded twisted pair cable to pins 6 and 13 of the accessory connector and use pin 5 for connection of the shield A relay is provided that activates when the announce button is pressed and its contacts are available on the acce...

Страница 32: ...ve Figure 2 17 Connection of External Talk Switches INADEQUATE SIDE TONE ADJUSTMENT The receive circuits of the intercom channels have been optimized for an intercom line length of up to 1 000 ft 305 m The capacitance of the intercom line must be compensated for in the receive circuits if a good sidetone null is to be achieved When using a speaker a good sidetone null is necessary to achieve a usa...

Страница 33: ...en A Program Level XLR4 Headset Headset Limiter Line Length Sidetone Null Intercom Line A Program Level B Listen B Line Length Sidetone Null Intercom Line B Main Pgm 3 2 Main Pgm Main Pgm Power A 3 1 2 Channel A XLRs 2 Power B 3 1 2 Channel B XLRs 2 30VDC 30VDC Call Signal Send Receive System Logic Front Panel Switches Buttons Indicators Annc Rly A Control To All Switches Intercom Line A A B Inter...

Страница 34: ...R M 7 0 2 T W O C H A N N E L R E M O T E S T A T I O N 3 2 ...

Страница 35: ...ance 1KΩ Mic Limiter Threshold 0dBu 3dB Mic Limiter Range 15dB Program Line Input Maximum Level before Clipping 20dBu Input Impedance 5KΩ Headset Output Load Impedance 8Ω Output Impedance 25Ω Output Limiter Threshold 5dBu 3dB Maximum Output Level before Distortion 17dBu Speaker Output Load Impedance 4Ω Max Output Level before 1 Distortion 20dBu 2dBu Party Line Output Off Noise 74dBu Output Impedan...

Страница 36: ...ne 0 5 Headset Mic Party Line 0 5 Headset Mic Line Out 0 5 Program Input Party Line 0 2 Program Input Headset Out 0 2 Program Input Speaker Out 0 5 Party Line Headset Out 0 2 Party Line Speaker Out 0 5 Noise Panel Mic Party Line 65dBu Headset Mic Party Line 70dBu Headset Mic Line Out 55dBu Program Input Party Line 85dBu Program Input Headset Out 60dBu Program Input Speaker Out 60dBu Party Line Hea...

Страница 37: ...1 XLR 4M Front Panel Controls Indicators 1 Panel headset mic switch 1 Announce button 2 Program send level controls 1 Program monitor level control 2 Listen controls 2 Sidetone null controls 2 Talk buttons 2 Call buttons 1 Speaker ON OFF switch Environmental 32 122o F 0 50o C Dimensions Dimensions 19 in W x 1 75 in H x 7 0 in D 483 mm x 44 5 mm x 178 mm Weight Weight 5 2 lbs 2 36 Kg Notice About S...

Страница 38: ... 7 0 2 T W O C H A N N E L R E M O T E S T A T I O N 4 4 are design center specifications and are included for customer guidance and to facilitate system installation Actual operating performance may vary ...

Страница 39: ...hones 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 co...

Страница 40: ... 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 Clear Co...

Страница 41: ...ty provides 24 x 7 customer support in addition to the warranty immediately upon purchase of the warranty extension Note Clear Com does not offer warranty extensions on UHF wireless intercom systems or on any product with a 1 year or 90 day warranty SERVICE CONTRACT Clear Com also offers service contracts that provide 24 x 7 telephone support advance replacements training proactive maintenance on ...

Страница 42: ...control of Clear Com 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 Clear Com 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 install...

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