Clear-Com Encore Partyline Installation Manual

Clear-Com Encore Partyline Installation Manual
Installation Manual | Encore Partyline Systems
Installation
Manual
Encore Partyline
A guide to installation
and use for Encore
Partyline Systems
Part Number: 399G134 Rev B
Date: 24 May 2018
Installation Manual | Encore Partyline Systems
Document Reference
Document title
Part Number: 399G134 Rev B
Legal Disclaimers
Copyright © 2018 HME Clear-Com Ltd.
All rights reserved.
Clear-Com and the Clear-Com logo are trademarks or registered 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.
The product described in this document is distributed under licenses restricting
its use, copying, distribution, and decompilation / reverse 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; Dubai, UAE;
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 Headquarters
California, United States
Tel: +1.510.337.6600
Email: [email protected]
Europe, Middle East, and Africa Headquarters
Cambridge, United Kingdom
Tel: +44 1223 815000
Email: [email protected]
Canada Office
Quebec, Canada
Tel:+1 (450) 653-9669
China Office
Beijing Representative Office
Beijing, P.R.China
Tel: +8610 65811360/65815577
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Installation Manual | Encore Partyline Systems
Please read and follow these instructions before operating this product.
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.
8. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produces heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades, with one blade wider than the other. A
grounding-type plug has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If the provided plug does
not fit into your outlet, consult an electrician for replacement of the obsolete
outlet.
10. Protect the power cord from being walked on or pinched particularly at
plugs, convenience receptacles, and the point where they exit from the
apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. 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.
13. Unplug this apparatus during lightning storms or when unused for long
periods of time.
14. 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 exposed to rain or moisture, does not
operate normally, or has been dropped.
15. WARNING: To reduce the risk of fire or electric shock, do not expose this
product to rain or moisture.
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Installation Manual | Encore Partyline Systems
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 speaker station is used improperly. They also refer you to
important operating and maintenance instructions in the manual.
Figure 1: Safety Symbols
Waste Electrical and Electronic Equipment (WEEE)
The European Union (EU) WEEE Directive (2012/19/EU) places an obligation on
producers (manufacturers, distributors and/or retailers) to take-back electronic
products at the end of their useful life. The WEEE Directive covers most ClearCom products being sold into the EU as of August 13, 2005. Manufacturers,
distributors and retailers are obliged to finance the costs of recovery from
municipal collection points, reuse, and recycling of specified percentages per
the WEEE requirements.
Instructions for Disposal of WEEE by Users in the European Union
The symbol shown below is on the product or on its packaging which indicates
that this product was put on the market after August 13, 2005 and must not
be disposed of with other waste. Instead, it is the user’s responsibility to
dispose of the user’s waste equipment by handing it over to a designated
collection point for the recycling of WEEE. The separate collection and recycling
of waste equipment at the time of disposal will help to conserve natural
resources and ensure that it is recycled in a manner that protects human
health and the environment. For more information about where you can drop
off your waste equipment for recycling, please contact your local authority,
your household waste disposal service or the seller from whom you purchased
the product.
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CONTENTS
1
2
Introduction .............................................................................................. 8
1.1
The Clear-Com Concept ......................................................................... 8
1.2
Power Distribution and Short Circuit Protection ......................................... 9
Installing an Intercom System ................................................................ 12
2.1
Single-Channel System ........................................................................ 12
2.2
Multi-Channel System .......................................................................... 13
2.2.1
Crosstalk Considerations in a Multi-Channel System ........................... 14
2.3
Intercom Cable Considerations .............................................................. 16
2.4
Installing the Stations .......................................................................... 19
2.5
Connections ........................................................................................ 19
2.5.1
Intercom Line Connection: .............................................................. 19
2.5.2
Line Termination: .......................................................................... 20
2.5.3
Headset Connector: ....................................................................... 20
2.5.4
Panel Mic Connector: ..................................................................... 21
2.5.5
Hot Mic Out / IFB System: .............................................................. 21
2.5.6
Stage Announce Output: ................................................................ 22
2.5.7
Relay Out: .................................................................................... 22
2.5.8
Program Input: ............................................................................. 22
2.5.9
External Speaker:.......................................................................... 23
2.5.10 Auxiliary Connector: ...................................................................... 23
2.5.11 AC Power Connection: .................................................................... 23
3
4
5
Configuring Clear-Com Products to Work Together ................................. 24
3.1
TW-47 Two-Way Radio Interface............................................................ 24
3.2
KB-701 Speaker Station ....................................................................... 24
3.3
RM-702 Remote Station ....................................................................... 25
System Checkout ..................................................................................... 27
4.1
Check Termination ............................................................................... 27
4.2
Check Intercom Cable Resistance .......................................................... 27
4.3
Final Tests .......................................................................................... 28
Troubleshooting ...................................................................................... 29
5.1
System does not operate ...................................................................... 29
5.2
Red SHORT LED illuminated .................................................................. 29
5.3
Both red SHORT LEDs are illuminated ..................................................... 29
5.4
Hum or buzz in system ......................................................................... 30
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Installation Manual | Encore Partyline Systems
5.5
System feedback (Acoustical) ................................................................ 30
5.6
Excessive crosstalk .............................................................................. 31
5.7
Program signal sounds distorted. ........................................................... 31
5.8
Call signals do not function. .................................................................. 31
5.9
Call Signals do not turn off.................................................................... 31
6
Typical Applications ................................................................................. 32
6.1
Cable or School Television Studio........................................................... 32
6.2
Theatre 1 ........................................................................................... 34
6.3
Theatre 2 ........................................................................................... 36
6.4
Theatre 3 ........................................................................................... 38
6.5
ENG/EFP Truck .................................................................................... 40
7
Program Audio to Announce Output Option ............................................. 41
7.1
Theatre Application .............................................................................. 41
7.2
Setting the Option ............................................................................... 43
7.3
System Setup ..................................................................................... 44
8
Appendix 1: Partyline Products (to assist in upgrading existing systems)
45
9
Glossary .................................................................................................. 48
10
Technical Support and Repair Policy ..................................................... 51
10.1
Technical Support Policy .................................................................... 51
10.2
Return Material Authorization Policy .................................................... 53
10.3
Repair Policy .................................................................................... 54
11
Compliance ........................................................................................... 56
Acknowledgement ......................................................................................... 60
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1
Introduction
Congratulations on choosing Clear-Com products. Clear-Com was established
in 1968 and remains the market leader in providing intercom for
entertainment, educational, broadcast and industrial applications. The
ruggedness and high build-quality of Clear-Com products is the industry
standard. In fact, many of our original beltpacks and Main Stations are still in
daily use around the world.
We recommend that you read through this manual completely to better
understand how to install your intercom system. Please pay particular
attention to the section on system wiring, as improper wiring detracts from the
performance of the system or causes system failure. If you encounter a
situation or have a question that this manual does not address, contact your
dealer or call Clear-Com direct at the factory. Our applications support and
service people are standing by to assist you. Thank you for selecting ClearCom for your communications needs.
1.1
The Clear-Com Concept
Clear-Com is a closed-circuit intercom system that consistently provides highclarity communication in both high-noise and low-noise environments. A basic
system consists of a single- or multi-channel Power Supply or Main Station
connected to various single- or multi-channel Remote Stations, such as
beltpacks and loudspeaker stations.
Clear-Com is a distributed amplifier system; each Main or Remote Station
houses its own microphone preamplifier, headset or speaker power amplifier,
and signaling circuitry. Stations bridge the intercom line at a very high
impedance and place a minimum load on the line. The audio level always
remains constant, and does not fluctuate as stations leave and join the system.
Low-impedance mic input lines and specially designed circuitry make ClearCom channels virtually immune to RFI and dimmer noise.
Clear-Com stations are interconnected with two-conductor, shielded
microphone cable (or individually shielded multi-pair cable as required).
Portable stations are connected with 2 conductor cables with 3-pin XLR
connectors. One wire, connected to pin 2, carries the DC power from a Main
Station or Power Supply to all Remote Stations. The other wire, connected to
pin 3, carries the 2-way (duplex) audio information. The shield, connected to
pin 1, 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 Main Stations, Power Supplies and certain Remote Stations each
have an auxiliary program input with its own volume control, which allows an
external audio source to be fed to the intercom system.
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Visual Signal Circuitry (Call Lights), a standard feature on all Main and Remote
Stations, allows the user to attract the attention of operators who have
removed their headsets. Certain stations also have an audible Tone Alert
feature which can be useful for this purpose.
Clear-Com manufactures a wide variety of both portable and fixed-installation
units. All are compatible with each other. Clear-Com intercom systems can also
interface with other communication systems and devices.
1.2
Power Distribution and Short Circuit Protection
A Main Station or Power Supply is the heart of an intercom system. It has
special features which are not found in traditional designs. It must supply lownoise DC current to multiple intercom lines. It must continue to operate in
adverse conditions such as low AC line voltage, momentary shorts on the DC
power lines to the stations, and excessive peak loads during power-on
conditions.
Use the calculator available on this hyperlink (see Fig. 1-1 for illustration) to
determine how many Speaker Stations and Beltpacks can be powered in
varying combinations by a Main Station or Power Supply. Additional power
supplies can be connected for additional power capability if required by the
application. The current requirements of Clear-Com Remote Stations and
Beltpacks vary with model and use. A station which is simply '"on" and not
being used may draw only a small amount of current. Contact your dealer or
Clear-Com if you require further assistance in determining the overall current
requirements of your system.
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Fig 1-1: Screenshot of Power Supply Calculator available on Clear-com website
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Installation Manual | Encore Partyline Systems
For example, the MS-702 provides DC power to operate Clear-Com beltpacks
and remote stations. The power is distributed between the two channels and
will support up to 40 RS-601 beltpacks or 10 speaker stations or 12 headset
stations.
Clear-Com’s fail-safe design automatically shuts down the power to a channel
when a short circuit or electronic overload is sensed on that channel. The other
channel will continue to operate normally. Once the fault condition is removed,
the MS-702’s fail-safe circuit will restore power, even under full load
conditions. LED indicators signal a short or overload on either channel.
The DC power output details are:
• 1.2A continuous output
• 2A peak output (not exceeding the 1.2A rating for more than 2 seconds
per 1 minute period)
The station internal power supply senses the difference between short-term
and long-term shorts and overload conditions. After the first few times a short
or overload occurs, the power supply will try to restore power after only 0.5
seconds. If the short or overload persists or occurs repeatedly, the power
supply will take progressively longer (to a maximum of 20 seconds) to try to
restore power. This protects the power supply from damage due to
overheating. Once the short is removed, the channel will recover, even under a
full load condition. Shorts are generally caused by miswiring or damaged
cables. Overloads are generally caused by connecting too many beltpacks and
stations to a channel.
Figure 1-1 Clear-Com line termination
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2
Installing an Intercom System
When considering how to install and wire an intercom system, several factors
must be taken into account. These include the number of stations, the length
of the cable runs and whether single or multiple channels are required. If
multi-channel stations are connected with multi-pair cables, then crosstalk
becomes an important issue. Crosstalk is not a factor with single-channel
systems or multi-channel systems where each channel is run on its own
individual cable to single-channel Remote Stations. While the physical
considerations include ease of installation, type of cabling, station location,
etc., the electrical considerations are concerned primarily with the capacitance
between conductors on the intercom line, and the DC resistance in the ground
return of the intercom line.
Note: PIN 1 and the shell of the XLR plug on the interconnect cables should NOT be
connected together.
Excessive resistance in the conductors of the cable results in a loss of sidetone
null at Remote Stations, and some overall loss of level. Excessive resistance in
the ground conductor or shield greatly increases crosstalk between channels.
This can significantly affect the performance of multi-channel systems.
2.1
Single-Channel System
In a single-channel system, there are two general methods of wiring Remote
Stations to the Power Supply. Any one method may be used exclusively in a
small system, and both may be used in various combinations for a larger
system.
1)
Daisy Chain: Remote stations and beltpacks are wired from one
station to the next and so on along each line connected to a Main
Station. This requires the least amount of cable, but may be impractical
due to the system layout. Also, if a break occurs in the line, all stations
down line of the break will be disconnected from the party line.
Figure 2-1 Party Line Daisy Chain
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2)
Hub or Star: Each Remote Station is wired directly back to a Main
Station or to a split of a line wired directly to a Main Station.
Figure 2-2 Party Line Hub Configuration
2.2
Multi-Channel System
In a multi-channel system where each channel is run on its own cable and
connected only to single channel Remote Stations as in the following diagram,
there are no crosstalk issues because the channels do not share a common
ground. Consult the table in the next section for cable recommendations.
Figure 2-3 Multi-Channel Party Line
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It is also important to centrally locate the multi-channel Main Station or Power
Supply containing the termination. Crosstalk does not exist at the termination
point, but can increase in proportion to the length of the wiring to multichannel stations. If the termination is centrally located and the wiring length
guidelines in the following section are adhered to, then crosstalk will be at a
minimum.
2.2.1
Crosstalk Considerations in a Multi-Channel System
In a multi-channel system where multiple channels are run from a Main Station
to a Remote Station as in the following diagram, crosstalk can be an issue.
This is because the channels will share a common ground at both ends of the
cable run.
When multiple channels are fed to Remote Stations, the amount of crosstalk
between channels is proportional to the DC resistance of the ground return
path back to the channel terminations. To minimize this crosstalk between
channels when running more than one channel in a multi-pair cable, keep the
DC resistance of the ground return as low as possible. Ideally, this should be
less than 2 Ohms. This can be achieved as follows:
• Keep cable runs under 500 feet. If a longer cable run is unavoidable
and approaches 1000 feet or more, make sure the appropriate lone line
option switches or jumpers are set in the stations. Refer to the
individual station manuals for further information.
• Use a cable whose common shield has a low DC resistance.
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• Connect unused cable wires of a multi-pair cable to the Pin 1 shield.
Note: All multi-pair cables must have individually shielded pairs.
The performance of a Clear-Com system depends upon the use of Clear-Com
or Clear-Com approved compatible headsets. Use of headsets other than these
can induce crosstalk into a multi-channel system through the headset cable.
Clear-Com also recommends against the use of headset extension cables or
headset "Y" cables, as they will increase crosstalk into a multi-channel system.
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2.3
Intercom Cable Considerations
The Clear-Com intercom line is intended to run on one shielded cable pair per
intercom channel. One conductor carries audio, and the other conductor carries
the DC power for Remote Stations. The shield serves as the ground return for
the audio and power conductors. When choosing interconnect cable, keep the
following considerations in mind:
• Keep cable runs under 500 feet. The DC resistance of the ground or
common conductor affects crosstalk. For permanent installation runs
longer than 500 feet, do not use wire smaller than 20 gauge. The
capacitance of the interconnect cable affects system frequency
response and sidetone stability. Total capacitance should not be greater
than 0.25 uF.
Figure 2-4 High Frequency Loss
• Ground Isolation: The Pin 1 ground connection of each XLR
connector must be isolated from the chassis. Pin 1 should not be
connected to the shell of the XLR connector.
• Multi-pair Cable: Individually shielded multi-pair cable is acceptable
for use in multi-channel systems. For crosstalk considerations the
shields must be tied together on both ends of the cable to produce the
lowest possible DC resistance path for the ground return.
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Figure 2-5 Wire chart for Encore
Installation Manual | Encore Partyline Systems
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Installation Manual | Encore Partyline Systems
Note: For better than 50 dB channel crosstalk use:
• Portable Installation Cable: Practical cable for portable system
interconnections is flexible, two-conductor, shielded microphone cable. We
suggest using BELDEN #9463F (20 Gauge). It is also possible to use 22
Gauge wire (BELDEN 8451).
• Permanent Installation Cable: Vinyl-jacketed shielded pair is the cable of
choice for permanent installations. Placing the cable in conduit is
recommended but not necessary. We recommend BELDEN #9207 (20
Gauge)
Make sure all cabling and installations are inspected and approved by the
local fire authority.
2.4
Installing the Stations
First, choose the location for the Main Station or Power Supply. These units require
access to AC power. They should be located away from other equipment that
generates excessive amounts of heat. Also, choose locations for each Remote
Station and Speaker Station. Choose general locations and areas of use for the
beltpacks. Determine the locations for other Clear-Com equipment which will
connect to the intercom lines. The choice of location will depend upon and often
define the wiring scheme. It is very helpful to create a drawing showing where each
component will be located as well as where the wiring will run.
It is recommended to install all stations connected to the same AC for
returns and ground.
2.5
Connections
The following sections describe the connections provided on the intercom stations:
2.5.1
Intercom Line Connection:
The rear panel of Main Stations, Power Supplies, Remote Stations, and other
stations contain between one and three 3-pin male XLR connectors for each
intercom line. These connectors are wired in parallel. Any single-channel station or
channel of a multi-channel station connected on a line plugged into Channel A of the
Main Station will be "party-lined" with all the other stations on that channel. In a
multi-channel system, the goal is to assign specific people to the correct group, i.e.
the other people they need to be in contact with the most. This is particularly
important when the party line users are on a single-channel beltpack or station; less
so if they are on multi-channel stations. The pinout of the intercom connectors is as
follows:
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•
•
•
•
2.5.2
Pin 1 --- Ground (Shield)
Pin 2 --- Power
Pin 3 --- Audio
Shell is not connected to chassis
Line Termination:
The fundamental concept of Clear-Com Party-Line intercom is that all channels are
terminated in one location, preferably at a Main Station or Power Supply.
Note: All intercom lines must be terminated. Care must be taken not to double-terminate
a line. All unused intercom lines must also be terminated.
Switching the channel terminations ON and OFF is done with switches or jumpers on
the Main Station. In most systems, the terminations should be in the ON position
(default setting). Clear-Com Power Supplies also provide switch-selectable
termination networks on all intercom lines. Refer to the User Manual for the specific
Main Station or Power Supply for the exact location. It is up to the user to ensure
that the terminations are set correctly. An unterminated line will cause excessive
levels, possible oscillation of line drivers, and squealing in the headsets. An
intercom line with double or multiple terminations will cause low levels and the
inability to null the headsets.
The termination switches on a Main Station should be set to the OFF position only if
the channel is terminated by another Main Station or Power Supply in the system.
If there are no other Main Stations or Power Supplies terminating the line,
the termination switch on each channel of the Main Station should be
switched to ON.
2.5.3
Headset Connector:
The headset connector is located on the front panel of all stations. Clear-Com
headsets are recommended, but others can be used if they meet the following
requirements:
•
•
Mic Type --- Dynamic; 150 to 250 Ohms impedance; -55 dB output
level
Headphone --- Dynamic; 50 to 2000 Ohms impedance
The wiring of the headset is to be as follows:
•
•
•
•
•
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Pin 1 --- Mic common
Pin 2 --- Mic hot
Pin 3 --- Headphone common
Pin 4 --- Headphone hot
Shell is not connected to chassis
Installation Manual | Encore Partyline Systems
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 channels.
If you choose to ignore this warning, the schematic below may work for you:
Headset extension cable (if you must have one)
2 separate shielded pairs
All shields onnectedto pin 1 at one end
2.5.4
Panel Mic Connector:
Clear-Com recommends the GM-9 and GM-18 plug-in panel microphones for
use with all stations having a panel mic connector. The GM-9 is 9 inches long
and the GM-18 is 18 inches long. The microphone is an electret type. The ¼inch phone jack on the microphone mates with the Panel Mic receptacle on the
front panel.
To install a GM-9 or GM-18 microphone, use the following steps:
Check the set screw in the mic mounting flange to make sure it is clear of the
threads in the bushing.
Screw the microphone into the bushing hand tight.
Set the set screw on top of the bushing to lock the microphone in place.
2.5.5
Hot Mic Out / IFB System:
Some Main and Remote Stations have an interface to the External Line In jack on
Clear-Com's IFB System. This connection is a ¼-inch phone jack on the rear panel.
It provides a 0 dBu output signal from the selected headset or panel microphone on
the station. It connects using a standard 2-wire and shield stereo ¼-inch plug-toplug cable such as the Clear-Com P/N 73016501 (18 inch) or P/N 73016502 (5
foot). It allows the station's microphone to be used to cue talent through the IFB
System. A control signal sent into this connector from the IFB System can optionally
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disconnect the station's microphone from the intercom line(s). The jack is wired as
follows:
•
•
•
2.5.6
Ring --- Ext. IFB Control Signal Input
Tip --- Hot Mic Audio Output
Sleeve --- Ground (Shield)
Stage Announce Output:
Some Main and Remote Stations have a 3-pin XLR male connector on the rear panel
to feed into a studio PA. Pressing the Announce button on the front panel places the
audio from the selected headset or panel microphone on the rear panel connector.
Optionally, pressing the Announce button can also disconnect the selected headset
or panel microphone from the intercom line(s). This option is controlled by the
Interrupt Announce option switch. Simultaneously, if the program audio feed to the
Announce Output is enabled, it is interrupted by the announcement. Program audio
feed to the Announce Output is selected by setting a jumper on the Main board to
the ON position. The pinout of the Announce Out connector is as follows:
•
•
•
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 dBu. A shielded twisted pair cable should be used in
the cable wired to this connector.
2.5.7
Relay Out:
On some Main and Remote Stations with an Announce button, a dry set of relay
contacts is provided through a ¼-inch jack, DB-15F, or screw terminals on the rear
panel. These contacts can activate an external device such as a PA amplifier to
another room. The contacts are rated for 2.0 Amps at 24 VDC. If screw terminals
are provided on the Main Station, their connections are labeled N/C, C and N/O. The
¼-inch jack is wired as follows:
•
•
•
2.5.8
Ring --- Normally Closed Contact --- N/C
Tip --- Common Contact --- C
Sleeve --- Normally Open Contact --- N/O
Program Input:
A 3-pin XLR female connector on most Main Stations and Power Supplies provides
the program input to the intercom system. The Program Input accepts a balanced or
unbalanced line-level audio signal from -20 dBu to +10 dBu. There is an option to
feed program audio to the Announce Output. This is selected by setting a jumper on
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Installation Manual | Encore Partyline Systems
the Main board to the ON position. When this option is selected, a 0 dBu signal on
the Program Input will produce a 0dBu signal on the Announce Output.
The pinout of the Program Input connector is as follows:
•
•
•
2.5.9
Pin 1 --- Ground (Shield)
Pin 2 --- + Signal
Pin 3 --- - Signal
External Speaker:
Some Main Stations provide an 8 Ohm external speaker output through a ¼-inch
jack.
2.5.10 Auxiliary Connector:
Some Main Stations provide a DB-15 type Auxiliary connector on the rear panel.
This allows connection to a variety of devices, depending upon the capabilities and
features of that particular Main Station. Refer to the Main Station User Manual for
further details on the connections provided.
2.5.11 AC Power Connection:
An IEC type 320 connector is provided on most Main Stations and Power Supplies to
interface to the appropriate AC power cord to be used. Refer to the chart on the
inside back cover of this manual. Main Stations and Power Supplies can either be
switched between 115 or 230 VAC operation or will automatically adjust to voltages
from 100 to 240 VAC at 50 or 60 Hz. Consult the User Manual for information on the
particular unit.
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3
Configuring Clear-Com Products to Work
Together
Clear-Com Intercom Systems are designed to integrate with many other Clear-Com
products. The following sections describe some frequently used configurations. Most
of these configurations involve the use of Clear-Com's versatile Call signal. This
signal travels silently through the intercom wiring and is often used to get the
attention of operators who have removed their headsets. However, as the following
descriptions show, it can also be used to control a variety of functions.
3.1
TW-47 Two-Way Radio Interface
It is often important to link walkie-talkies into an intercom system to extend
communication to remote persons. The TW-47 Two-Way Radio Interface connects
between an intercom line and a variety of walkie-talkies, using one walkie-talkie as
a base station. Refer to the TW-47 Instruction Manual for details describing the
connection of the TW-47. To interface with the TW-47, the option switches of the
Main or Remote Station must be set as follows:
• Enable the Momentary Talk option switch or jumper on the appropriate
channel of the Main or Remote Station. Refer to the User Manual for the
Main or Remote Station to locate this switch or jumper. This will cause the
Talk button to have a momentary only action and not latch.
• Enable the Call on Talk option switch or jumper on the appropriate channel
of the Main or Remote Station. Again, refer to the User Manual for the Main
to locate this switch or jumper. This will cause the Call signal to be activated
whenever the Talk button is held down.
When the Talk button is depressed, the Call signal will be activated, causing the
transmitter connected to the TW-47 to be keyed. Audio on the intercom line will
then be transmitted over the two-way radio. When the Talk button is released, the
Call signal will disappear and audio from the receiver of the two-way radio will
appear on the intercom line, allowing a reply.
3.2
KB-701 Speaker Station
KB-701 devices are single channel speaker stations. In the following description the
current model KB-701 is cited but the functionality is similar or identical on the
earlier stations.
The KB-701 Speaker Station provides intercom communication capability in places
where wearing a headset is not feasible. It can be optioned for several remote
control functions. Refer to the appropriate Instruction Manual for details on setting
the option switches.
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A Main or Remote Station can control the microphone on a KB-701 set to Remote
Listen operating mode, allowing the KB-701 operator to talk "hands free." When the
option switches of the KB-701 are set to this mode, depressing the Call button on
the Main or Remote Station will turn on the microphone of the KB-701. Care must
be taken in the design of the intercom system to make sure that the call signal will
not be needed for other functions on the same channel. For example, it would not
be possible to interface both the TW-47 and a KB-701 in Remote Listen mode on the
same intercom channel. In this case, separate intercom channels should be used for
each interface.
The KB-701 also has Remote Page and Remote Listen-Page modes. In these modes,
the speaker of the KB-701 can be turned on by a Call signal from the Main Station.
The flexibility of Clear-Com Main and Remote Stations allows the following
variations on these modes:
• A Main or Remote Station can be used to talk to other intercom stations,
and enable the KB-701 speaker only when necessary. To talk to all intercom
stations except the KB-701, press the Main or Remote Station Talk button.
To talk to the KB-701 as well, press both the Call and Talk buttons.
• A Main or Remote Station can enable the KB-701 speaker whenever the
operator is talking to other intercom stations. Set the Call on Talk option
switch or jumper for the channel the KB-701 is on. This will cause the Call
signal to be activated whenever the Talk button is held down. This will have
the effect of turning on the KB-701 speaker whenever the Talk button is
pressed. If it is preferable to prevent the Talk button from latching, set the
Momentary Talk option switch or jumper for that channel to the ON position.
This will cause the Talk button to have a momentary only action and not
latch.
3.3
RM-702/RM-802-IM Remote Station
An MS-702/RM-802-IM Main Station can be configured to provide program audio on
a channel but allow this audio to be interrupted whenever the Talk button for that
channel is pressed. If a Remote Station, such as the RM-702 is used along with the
Main Station in this configuration, it can be important to have the program audio
interrupted by the operator of either station. To do this, the Main or Remote
Stations must be set up as follows:
• Enable the Momentary Talk option switch or jumper on the appropriate
channel of the Main and Remote Stations. Refer to the User Manual for to
locate this switch or jumper. This will cause the Talk button to have a
momentary only action and not latch.
• Enable the Call on Talk option switch or jumper on the appropriate channel
of the Main and Remote Stations. Again, refer to the User Manual for these
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stations to locate this switch or jumper. This will cause the Call signal to be
activated whenever the Talk button is held down.
• Feed the program audio into the Program Audio connector on the Remote
Station.
With this setup, any Call signal on this intercom channel, including Call signals from
beltpacks, will cause the program audio to be interrupted.
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4
System Checkout
Before you turn on the power, perform the following tests:
4.1
Check Termination
3)
There should be one and only one termination for each channel in the
system. This termination is usually set to ON at the Main Station or Power
Supply. To ascertain that only one termination is present on the channel,
perform the following test:
Note: The location of the termination switch varies with model. On some products, the
termination switches are on the rear panel; on others they are jumpers inside the
unit. Consult the unit's manual for the location.
1)
Using a multimeter, measure the resistance between pins 1 and 3 on one of
the Channel A XLR connectors at the rear of the unit.
2)
If the channel is terminated properly, then the resistance should measure
approximately 4,000 – 5,000 Ohms. A very high channel resistance means
the channel is not terminated. Channel resistance of 2,000 Ohms indicates
a double-termination. If a double-termination is indicated, locate the other
terminated Power Supply or Main Station and set its termination to OFF.
3)
Repeat for the other channels.
4)
Check resistance between Chassis Ground and pin 1. Using an Ohmmeter,
measure the resistance from pin 1 on the Main Station or Power Supply to
chassis ground. The measurement should read 10 Ohms. A high reading
(over 100 Ohms) indicates that the 10 Ohm resistor in the unit has failed
and requires replacement. Failure to perform the replacement will result in
an audible "buzz" in the system. A reading of less than 10 Ohms (or a short)
typically indicates that the shell and pin 1 of one of the interconnect cables
are shorted together. Test the individual cables until the culprit is located
and repair or replace the cable.
Note: Pin 1 and the shell of the XLR plug on the interconnect cables should NOT be
connected together.
4.2
Check Intercom Cable Resistance
For minimal crosstalk, the ground resistance of the intercom cables should be as low
as possible, preferably less than 2 Ohms. Disconnect an intercom line from the Main
Station or Power Supply. At the point in the intercom line furthest from the unit,
connect a clip lead jumper between pins 1 and 2. Back at the "powered" end, use an
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Ohmmeter to measure the resistance between pins 1 and 2. A value of less than 4
Ohms is ideal, but a value of 4 to 10 Ohms is acceptable.
4.3
Final Tests
After you turn the power ON:
1)
Check for proper voltage on pin 2 of any intercom line or jack in a channel.
It should read 26-30 Volts.
2)
Test for proper operation of Call Signaling. Activate the Call Signal on any
beltpack or station. The call light on the Main Station should illuminate and
then go out when the call button is released. If enabled, the Tone Alert
should sound. Activate the Call Signal on the Main Station. The call lights on
any beltpacks or stations should illuminate and then go out when the call
button is released.
3)
Adjust the sidetone on this and all stations. (Refer to the manual for each
specific unit for instructions.) Using the headset or panel mic, make sure
that the Main Station can communicate with attached beltpacks or stations.
Check that other stations can be heard through the panel speaker.
4)
If connected, check that Program Input, Announce Output and Hot Mic
Output / IFB System jacks are functional. Verify the operation of the
controls that affect the function of these inputs and outputs. Refer to the
User Manual of the particular Main Station.
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5
Troubleshooting
5.1
System does not operate
No power to main station or power supply. Green POWER LED is not illuminated and
no SHORT LED's are illuminated
1)
Cause: No AC power to the main station or power supply.
Solution: Make sure the power switch on the rear panel is turned ON.
Check AC connection and cable. Plug into dependable AC source.
2)
Cause: Main Station or Power Supply has an internal Power Supply failure.
Solution: Unit requires servicing.
5.2
Red SHORT LED illuminated
1)
Cause: Short or overload on that channel due to a shorted or incorrectly
wired cable.
Solution: Remove cables one at a time from system until the faulty line is
located. (The red Short LED will then turn off.) Check for shorts between
pins 1 and 2 or improper cable wiring. Once the short is removed, the main
station or power supply will reset automatically and the power will come
back up within several seconds.
2)
Cause: Defective Remote Station.
Solution: Check Remote Station and replace if necessary.
5.3
Both red SHORT LEDs are illuminated
1)
Cause: System is overloaded.
Solution: Remove cables, one at a time from system to help determine
where the excess current requirements lie. Re-evaluate system current
needs.
2)
Cause: Short in multipair cable.
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Solution: Remove cables, one at a time from system until the faulty line is
located. Check for shorts between pins 1 and 2 or improper cable wiring.
5.4
Hum or buzz in system
1)
Cause: Inductive pickup caused by close proximity of this Main Station or
connected Remote Stations to power lines or transformers.
Solution: Relocate offending unit.
2)
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 happens, it is because the system ground came into
contact with something that was "HOT" with respect to the Power Supply
earth ground. If this occurs, carefully check the system ground and AC
distribution in the area.
This is a potentially dangerous situation. A shock hazard may exist
between the metal boom of a Remote Station headset and ground.
5.5
System feedback (Acoustical)
1)
Cause: Listen level control at this station or a remote station is set too high.
Solution: Adjust.
2)
Cause: Sidetone null control at this station or a remote station is not
adjusted correctly.
Solution: Adjust. See the user manual for the relevant unit.
Cause: Channel unterminated.
Solution: Set the Main Station or Power Supply termination switch for that
channel to the ON position.
3)
Cause: A headset extension cord was used.
Solution: Headset extension cords are not recommended.
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5.6
Excessive crosstalk
1)
Cause: High DC resistance in ground return.
Solution: Use heavier cable; add additional conductor(s) to ground return.
2)
Cause: MULTI-CHANNEL cable pairs are not individually shielded.
Solution: Replace cable with individually shield pairs.
3)
Cause: Headset cables are not wired properly or shielded properly.
Solution: Correct wiring. Use headsets with properly shielded wiring.
5.7
Program signal sounds distorted.
1)
Cause: Overload of Program Input circuit.
Solution: Reduce Program Input level or reduce the gain of the program
signal at the source, such as an audio mixer.
5.8
Call signals do not function.
1)
Cause: Excessive DC loading of intercom line.
Solution: Remove any audio transformers or other equipment which 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 advice.
2)
Cause: Far too many terminations on the intercom line.
Solution: Check all Main Stations and Power Supplies to make sure each
intercom channel is terminated at only one point.
5.9
Call Signals do not turn off
Text to be supplied by C.B.
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6
Typical Applications
6.1
Cable or School Television Studio
Figure 6-1 Party Line Studio Application
The typical Cable or School Television Studio installation shown in the preceding
diagram is centered around a two-channel Main Station, which also powers the
system. The Director operates this station and an Assistant Director operates a twochannel Remote Station. A line of single-channel beltpacks is connected to Channel
A. The beltpacks are used by camera operators and floor managers. Communication
between these people and the Director and Assistant Director is on Channel A. Twochannel Headset Stations are wired to both channels A and B and are used by the
video and graphics people. This allows them the flexibility of communicating on
either Channel A or Channel B.
Program feed audio is connected to the Remote Station so it can be heard by the
Director as well as the Talent and Announcers. A Call signal can interrupt the
program audio that feeds into the Remote Station. Talent and Announcers use
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Talent Receivers which are connected to Channel B. The Director and Assistant
Director must be able to interrupt this program audio to cue the Talent and
Announcers, so Channel B would be programmed as follows:
• The Momentary Talk B option switch on the Main and Remote Stations must
be set to the ON (down) position. This will cause the Channel B Talk button
to have a momentary only action and not latch. Refer to the appropriate
User Manuals for the location of these settings.
• The Call on Talk B option switch on the Main and Remote Stations must be
set to the ON (down) position. This will cause the Channel B Talk button to
activate the Call signal.
• The Channel B On-Off-Interrupt switch on the Remote Station must be set
to the INTERRUPT position. The Channel A On-Off-Interrupt switch must be
set to the OFF position, assuming that program audio should not be heard
on this channel.
• The Channel B Program Level trimpot on the Remote Station should be
adjusted so that the program feed is at a comfortable level for the Talent
and Announcer.
If desired, the Director could turn on the Party Line Link (A+B) switch on the Main
Station during rehearsals to combine the communication between everyone on both
channels.
The Main or Remote Station speaker can be turned on whenever necessary, when
others in the area need to hear. If it is turned on, it will automatically dip in level
whenever the panel or headset microphone is on.
A PA amplifier can be connected to the Announce Output of the Main Station,
allowing the Director to make announcements to everyone in the studio. The Relay
Out connection can be used to switch the PA amplifier if necessary. Depending upon
the situation, these announcements may tend to interfere with communication on
the intercom line. If this is a problem, set the Interrupt Announce Option Switch on
the Main Station to the ON position. This will prevent announcements from being
heard on the intercom line.
Although this application was illustrated using 2-channel Main and Remote Stations,
it could have been implemented using 4-channel (or more) stations. Doing so could
further split the functional areas and allow more individual conversations to occur at
once.
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6.2
Theatre 1
Figure 6-2 Party Line Theatre Application Example 1
In the preceding diagram of a typical Theatre installation, the Stage Manager
operates a two-channel Main Station, which also powers the system. Several singlechannel beltpacks are connected to Channel A. The beltpacks are used by curtain,
spot, patch panel, and light board operators. Communication between these people
and the Stage Manager is on Channel A.
Some Main Stations contain a Tone Alert function. This will audibly signal the Stage
Manager if the stage personnel press the Call buttons on their beltpacks. If needed,
the Tone Alert function can be enabled using the button on the front panel. The
volume of this signal can be set using the Tone Alert Volume control.
An audio mixing console output from the stage pickup microphones is connected to
the Program Input of the Main Station. If desired, this audio can be placed at a low
(or any) level on Channel A. The level can be adjusted using the Channel A Program
Level trimpot. If this audio is to be interrupted by communication from the Stage
Manager, then the Channel A On-Off-Interrupt switch should be set to the
INTERRUPT position. If stage microphone audio should be heard on Channel A at all
times, the On-Off-Interrupt switch should be set to the ON position. If it is not
desirable to have audio from the stage microphones on this intercom channel, the
On-Off-Interrupt switch should be set to the OFF position.
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The Program Level control can be used to adjust the stage microphone audio level
the Stage Manager hears. Whenever the Stage Manager does not need to monitor
this, the Program Level control can be turned fully counter-clockwise.
Channel B is connected to Speaker Stations such as the Clear-Com KB-701/KB-702
which are installed in the green room and in dressing rooms. These Speaker
stations should be optioned for Normal operation, which enables the speaker and
allows a push-to-talk function for replying to the Stage Manager. Channel B on the
Main Station would typically be programmed as follows:
• The Momentary Talk B option switch must be set to the ON position. This
will cause the Channel B Talk button to have a momentary only action and
not latch. The Stage Manager could then only be heard by the actors and
actresses in the Green Room and Dressing Rooms when the Channel B Talk
button is held down.
• The Channel B On-Off-Interrupt switch must be set to the INTERRUPT
position. This causes the Channel B Talk button to interrupt the audio from
the stage microphone.
• The Channel B Program Level trimpot should be adjusted to a comfortable
level in the Speaker Stations.
The stage microphone audio can then be heard by the actors and actresses in the
green room and dressing rooms. The stage microphone audio heard by the waiting
actors and actresses will be interrupted whenever the Stage Manager talks to them.
Because of the two-channel capability, communication between the Stage Manager
and stage equipment operators cannot be heard by the actors and actresses, and
vice-versa. This eliminates confusion and miscommunication. If desired, the Stage
Manager can turn on the Party Line Link (A+B) switch on the Main Station during
rehearsals to combine the communication between everyone on both channels.
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6.3
Theatre 2
Figure 6-3 Party Line Theatre Application Example 2
In this example of another typical Theatre installation, the Stage Manager operates
a two-channel Main Station, which also powers the system. Several single-channel
beltpacks are connected to Channel A. The beltpacks are used by props and scenery
people. Communication between these people and the Stage Manager is on Channel
A.
Several single-channel beltpacks are also connected to Channel B. The beltpacks are
used by sound, light board, patch panel, and spot operators. Communication
between these people and the Stage Manager is on Channel B.
A mixing board audio output from the stage pickup microphones is connected to the
Program Input of the Main Station. Using the Program Audio to Stage Announce
option, this audio is routed out the Stage Announce output of the Main Station and
into an external power amplifier. This amplifier drives speakers in the Green Room,
Hallways, and Dressing Rooms. The people in these rooms will then be able to hear
sound from the stage. The Stage Manager presses the Announce button on the Main
Station to communicate with the people in these rooms. When this happens, the
audio from the stage is interrupted automatically. As long as the Stage Manager
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does not have a Talk set, the announcement is heard only by the people in the
Green Room, Hallways, and Dressing Rooms, but not by the people on intercom
Channels A or B.
To adjust the stage announce and program levels:
1)
Press the Announce button and adjust the program audio power amplifier for
the correct level from the speakers connected to it. The Stage Announce
output will provide a 0 dBu signal to the stage announce amplifier.
2)
With the Announce button released, adjust the Mixing Console so that the
Program level is correct as heard through the speakers connected to the
stage announce amplifier. The output from the Mixing Console will likely be
0 dBu or less.
3)
If the Program Audio is to be heard on the intercom channels, adjust the
Program Level controls for the channels accordingly. Refer to the MS-702,
MS-704/RM-704, or SB-704 Station manual to locate these controls.
4)
If the Stage Manager is to hear the Program Audio, adjust the Program
Level control on the MS-702, MS-802-IM, MS-704, RM-704, RM-802-IM or
SB-704 Station. If or whenever the Stage Manager does not need to monitor
this, the Program Level control can be turned fully counter-clockwise.
If the program audio on the intercom channel(s) is to be interrupted when the
Stage Manager presses the Talk button, then the On-Off-Interrupt switch for that
channel should be set to the INTERRUPT position. If stage microphone audio should
be heard on a channel at all times, its On-Off-Interrupt switch should be set to the
ON position. If it is not desirable to have audio from the stage microphones on an
intercom channel, its On-Off-Interrupt switch should be set to the OFF position.
Because of the multiple-channel capability, the Stage Manager can communicate
individually to three separate areas: Props and Scenery, Sound and Lighting, and
Costuming, Makeup, and Talent. This eliminates confusion and miscommunication.
If desired, the Stage Manager can turn on the Party Line Link (A+B) switch on the
Main Station during rehearsals to combine the communication between the Props
and Scenery channel and the Sound and Lighting channel.
The drawback of the Program Audio to Stage Announce option is that the people in
the Green Room, Hallways, and Dressing rooms cannot communicate back to the
Stage Manager. This may not be drawback in all cases. The benefit of this option is
that it adds an additional channel of communication from the Stage Manager.
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6.4
Theatre 3
Figure 6-4 Theatre Application Example 3
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In most systems:
It will be necessary to plug multiple intercom stations into AC power outlets
throughout the building. Backstage, Front 0f House, Projection Booth, Orchestra Pit,
Costuming & Makeup dressing rooms, etc. Plugging intercom stations into AC
outlets across a large building can create ‘ground’ currents. The round AC ‘ground’
ins are not exactly the same voltage in all locations due to wiring differences. These
small current difference in the AC ground wire create noise in the intercom system.
Whenever possible:
All intercom equipment should be plugged into a single power outlet strip.
In this way, all the intercom equipment grounds are the same, returning to the
same AC power distribution panel.
In places where a quiet connection to the AC power is not possible, a MT701 isolator
can be used, to transformer couple the audio, optically pass call signals and lift
grounds.
In this example (Figure 6-4):
The backstage system is separately powered with all terminations ON. The Front of
House system is also separately powered. There is a 2-channel main station in the
Front of House booth, electrically coupled to the IC line with the MT-701 but with
isolation in the power and ground connections. It is this isolation from the Back
Stage main station that avoids 60Hz hum and noise.
Note: It is best to avoid using multiple MT-701s on a single channel.
Excellent articles on this subject of grounding for audio are on the internet.
Recommended are the grounding articles by Bill Whitlock at Jensen. These articles
are available from the Jensen Transformer company website. Also, check his
reprints from the AES and Sound Communications magazine.
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6.5
ENG/EFP Truck
Figure 6-5 Party Line Eng/EFT Truck Application
In the preceding diagram of a typical ENG/EFP Truck installation, a 2-Channel Main
Station powers the intercom system. The Director operates the Main Station, and an
Engineer operates the Remote Station. A line of single-channel beltpacks is
connected to Channel A and are used by camera operators and floor managers.
Communication between these people and the Director is on Channel A. If 4channel (or more) stations were used in this application, the functional areas of
communications could be further split to allow more individual conversations to
occur at once.
A System Interface such as the Clear-Com TW-12C system interface can be used to
interconnect with another intercom system which may be on site, whether or not it
is a Clear-Com system. It isolates the intercom audio and compensates for level and
impedance differences. It also isolates and translates call signals for single channel
RTS systems. Channel B is connected to a Talent Receiver for Talent or an
Announcer. Program feed audio from the studio feed can be heard by the Director
and Engineer, as well as the Talent or Announcer. The Call on Talk B and
Momentary Talk B options switches on the Main and Remote Stations would be set
to the ON (down) position. This would cause the program audio heard by the Talent
and Announcer to be interrupted whenever the Director talks to them, but only
while the Director is holding the Talk button.
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7
Program Audio to Announce Output Option
The MS-702, MS-802-IM, MS-704, RM-704, RM-802-IM and SB-704 products
include the Program Audio to Stage Announce Output option. This option allows
audio from the main Program Audio input to be routed through the Stage Announce
output. Pressing the Announce button interrupts this audio and instead routes audio
from the selected panel or headset microphone through the Stage Announce output.
This facility is also available as standard on the MS-702, MS-802-IM, MS-704, RM704, RM-802-IM and SB-704 products.
7.1
Theatre Application
One application of the Stage Announce option is illustrated in the following diagram:
Figure 7-1 Party Line Theatre Application
In the preceding diagram of a typical Theatre installation, the Stage Manager
operates a two-channel Main Station, which also powers the system. Several singlechannel beltpacks are connected to Channel A. The beltpacks are used by props and
scenery people. Communication between these people and the Stage Manager is on
Channel A.
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Several single-channel beltpacks are also connected to Channel B. The beltpacks are
used by sound, light board, patch panel, and spot operators. Communication
between these people and the Stage Manager is on Channel B.
A mixing board audio output from the stage pickup microphones is connected to the
Program Input of the Main Station. Using the Program Audio to Stage Announce
option, this audio is routed out the Stage Announce output of the Main Station and
into an external power amplifier. This amplifier drives speakers in the Green Room,
Hallways, and Dressing Rooms. The people in these rooms will then be able to hear
sound from the stage. The Stage Manager presses the Announce button on the Main
Station to communicate with the people in these rooms. When this happens, the
audio from the stage is interrupted automatically. As long as the Stage Manager
does not have a Talk set, the announcement is heard only by the people in the
Green Room, Hallways, and Dressing Rooms, but not by the people on intercom
Channels A or B.
If desired, the stage audio can be placed at a low (or any) level on Channel A
and/or Channel B. The level can be adjusted using the Program Level trimpots for
each channel. If this audio is to be interrupted whenever the Stage Manager presses
the Talk button, then the On-Off-Interrupt switch for that channel should be set to
the INTERRUPT position. If stage microphone audio should be heard on a channel at
all times, its On-Off-Interrupt switch should be set to the ON position. If it is not
desirable to have audio from the stage microphones on an intercom channel, its OnOff-Interrupt switch should be set to the OFF position.
The Program Level control can be used to adjust the program audio level the Stage
Manager hears. If or whenever the Stage Manager does not need to monitor this,
the Program Level control can be turned fully counter-clockwise.
Because of the multiple-channel capability, the Stage Manager can communicate
individually to three separate areas: Props and Scenery, Sound and Lighting, and
Costuming, Makeup, and Talent. This eliminates confusion and miscommunication.
If desired, the Stage Manager can turn on the Party Line Link (A+B) switch on the
Main Station during rehearsals to combine the communication between the Props
and Scenery channel and the Sound and Lighting channel.
The drawback of the Program Audio to Stage Announce option is that the people in
the Green Room, Hallways, and Dressing rooms cannot communicate back to the
Stage Manager. This may not be drawback in all cases. The benefit of this option is
that it adds an additional channel of communication from the Stage Manager.
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7.2
Setting the Option
The setting for the Program Audio to Stage Announce option is an internal jumper
which may be positioned in either an ON or an OFF position. Products containing
this option are shipped from the factory with the option turned OFF.
Refer to the model’s operating manual for instructions on setting this jumper.
The other jump switches available on the MS-702/MS-802-IM are
•
•
•
•
Detail
Detail
Detail
Detail
B, JP1: alert tone delay
C, JP5: call/talk interrupt select
E, JP3: headset limiter
H, JP4: channel combine
On other models, these options are available as switches on the front panel. See the
instruction manual for each device for more information.
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7.3
System Setup
After connecting the MS-232, MS-702, MS-802-IM, MS-440, MS-704, RM-704,
RM-802-IM, SB-440 or SB-704 Station, perform the following steps to assure
that the audio level will be correct at each listening point:
1)
Press the Announce button and adjust the stage announce power
amplifier for the correct level from the speakers connected to it. The
Stage Announce output will provide a 0 dBu signal to the stage
announce amplifier.
2)
With the Announce button released, adjust the Mixing Console so that
the Program level is correct as heard through the speakers connected
to the stage announce amplifier. The output from the Mixing Console
will likely be 0 dBu or less.
3)
If the Program Audio is to be heard on the intercom channels, adjust
the Program Level controls for the channels accordingly. Refer to the
MS-232, MS-702, MS-802-IM, MS-440, MS-704, RM-704, RM-802-IM,
SB-440 or SB-704 Station manual to locate these controls.
4)
Lastly, if the Stage Manager is to hear the Program Audio, adjust this
level on the, MS-232, MS-702, MS-802-IM, MS-440, MS-704, RM-704,
RM-802-IM, SB-440 or SB-704 Station.
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8
Appendix 1: Partyline Products (to assist in
upgrading existing systems)
The following table provides information on Party Line products indicating which model
numbers have similar functionality to assist in upgrading existing systems where the
current products are no longer available. As the functionality of the equivalent products
may be slightly different the user should check the product manuals for details.
DESCRIPTION
ENCORE
PRODUCT
PARTY LINE
PRODUCT
INDUSTRIAL AND
MARINE PRODUCT
2-Channel Main Station
MS-702
MS-222
MS-200
MS-802-IM
2-Channel Remote Station
RM-702
RM-220
RM-802-IM
2-Channel Portable Station
CS-702
CS-222
4-Channel Main Station
MS-704
MS-400A
4-Channel Remote Station
RM-704
4-Channel Switchboard Main
Station
SB-704
SB-412A
12-Channel Source
Assignment Panel
RCS-2700
RCS-2000
Single Channel Wall Mount
Speaker Station
KB-701
KB-212
KB112
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2-Channel Wall Mount
Speaker Station
KB-702
KB-702GM
KB-211
KB-211GM
2-Channel Wall Mount
Headset Station
HB-702
MR-202
4-Channel Wall Mount
Headset Station
HB-704
MR-704
2-Channel Power Supply
PS-702
PS-232
4-Channel Power Supply
PS-704
PS464
Program Interrupt Controller
PIC-4744
PIC-4704
PIC-4000
System Interface
TWC-12C
TWC-12B
4-Wire Interface
IF4W4
IF4B-2
IF4B-4
2-Channel Intercom Adapter
TWC-701
4-Channel Intercom Adapter
TWC-704
2-Way Radio Interface
TW-47
TW-40
Party Line to 4-Wire Interface
EF-701M
EF-1M
Call Signal Flasher
FL-7
FL-1
Lightweight Power Supply
PK-7
PK-5
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IFB Control Panel
AX-704
AX-4
IFB Control Panel with Mic
Connector
MA-704
MA-4
Talent Receiver
TR-50
TR-50
Announcer’s Console
AB-700
AB-100
Beltpacks
RS-701
RS-702
RS-703
RS-601
RS-602
RS-622
RS-603
RS-603R
RS-623
RS-623R
RS-501
RS-502
RS-522
Table 8-1 Party Line Product Equivalences
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9
Glossary
Some of the terms used when discussing critical communications for television
or theatre may be new to you as they are unique to intercom applications.
Although many of the terms are common to other audio applications, to be
certain you understand their meanings we offer the following definitions:
All Call: Ability to push one button from the Main Station and talk to all
channels at once on a multiple channel system.
Ambient Noise: Those background sounds which are not part of the specific
communication but are picked up by the microphone. Selection of a good
"noise-canceling" mic will reduce ambient noise.
Belt Pack: A portable electronics package worn on the belt or mounted on a
wall or other convenient location. Interconnects to system with mic cable and
is powered by a central Power Supply or Main Station.
Bridging, High Impedance (hi-Z): A method of connecting to an audio line
(such as Clear-Com) without loading or taking appreciable power from that
line. Simply stated, as you add more and more stations to the line, the volume
remains constant.
Call Signaling: This feature is included with the majority of Clear-Com
products. It is a visual indicator on a station (a lamp or LED) used to attract
the attention of an operator who has removed the headset.
Channel: A channel is the line that connects parties together within a party
line - it is a two-way talk path. For example, if you have six people who need
to hear one director, you have a seven-station single-channel need. If the
same director needs to speak privately to any one of the six, add a second
channel. You now have a seven-station, two-channel system.
Closed-Circuit: Any intercom which is connected via cable (also called hardwired). The other type would be Wireless. . .we make those too. However, if
you want privacy and versatility, you probably want a closed-circuit system or
a combination of both.
Cross Talk: Leakage of audio transmissions from one channel to another.
Dry Pair: A telephone term is used to describe a pair of wires (2 conductors)
that carry audio but no voltage. Contrast this with a "Wet Pair" that carries
both audio and voltage.
Duplex: Duplex refers to bi-directional communications. Normal
communication between individuals talking face to face is "full duplex" -- in
other words you can talk and listen simultaneously. The alternative is "halfduplex" such as a push-to-talk situation where one station at a time can talk
while others listen. A walkie-talkie is a good example of half-duplex
communication.
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EFP: Electronic Field Production. An EFP truck contains the necessary audio,
video, intercom, and other equipment to create these productions.
ENG: Electronic News Gathering. An ENG truck contains the necessary audio,
video, intercom, communications, and other equipment to effectively support
gathering news and transmitting news reports back to a studio.
IFB: The term means "Interrupt Fold Back." A Fold-Back is a monitor system
that allows, for example, talent to hear their voices or musicians to hear their
voices and instruments on stage. IFB (program interrupt) disconnects the
audio source while the talk button on the Main Station is pushed.
ISO: A private conversation path. An ISO channel allows one to simply push a
button and transfer themselves and the person they wish to speak with to an
isolated channel.
Industrial Marine (IM): Product that is DNV certified for use in marine and
industrial applications.
Linking: Linking ties separate channels into one single party line.
Main Station: This is a product that includes both the ability to communicate
with multiple channels without connecting them together, and to power all the
stations connected to these channels.
Master Station: A Remote Station which requires AC power to operate, and
cannot power other stations
Multi-Channel: More than one channel
Party Line (P.L.): Intercom system where all people talking on the system
can talk or listen to each other simultaneously. Also called conferencing.
Point to Point: One path to one person.
Program: Audio source that is fed into the intercom channels.
Program Interrupt: Disconnects or attenuates the audio source while the talk
button on the Main Station is pushed. (IFB)
Remote Mic Kill (RMK): The ability for certain Main Stations to shut off all
microphones on beltpacks in a system.
Remote Station: Like the belt pack, this would be any of the products
connected to the intercom line that allow duplex or half-duplex conversation,
but do not contain a Power Supply.
Sidetone: This is your own voice heard in your earphone as you are speaking.
Stage Announce (SA): Redirects output of the Main Station's microphone to
an external destination (such as a PA system).
Station: A station is connected to one or more channels. For example, if you
have six people who need to hear one director, you have a seven-station
single-channel need. If the same director needs to speak privately to any one
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Installation Manual | Encore Partyline Systems
of the six, add a second channel. You now have a seven-station, two-channel
system.
Termination: Passive network that is connected in each channel, usually on
the Power Supply or Main Station.
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Installation Manual | Encore Partyline Systems
10
Technical Support and Repair Policy
To ensure that your experience with Clear-Com and our World Class products
is as beneficial, effective and efficient as possible, we would like to define the
policies and share some "best practices" that can accelerate any problem
solving processes which we may find necessary and to enhance your customer
service experience. Our Technical Support, Return Material Authorization, and
Repair Policies are set forth below. These Policies are subject to revision and
constantly evolve in order to address our Customers' and the Market's needs.
Therefore, these are provided by way of guidance and for information only and
may be changed at any time with or without Notice.
10.1
Technical Support Policy
a) Telephone, online, and e-mail technical support will be provided by the
Customer Service Center free of charge during the Warranty Period.
b) Technical support will be provided free of charge for all software products
under the following conditions:
i) The application, operating, and embedded software is installed on a product
covered by Clear-Com's Limited Warranty, and:
(1) The software is at the current release level; or,
(2) The software is one (1) version removed from current.
ii) Older versions of software will receive "best-effort" support, but will not be
updated to correct reported bugs or add requested functionality.
c) For Technical Support:
i) North and South America, (incl. Canada, Mexico, and the Caribbean) & US
Military:
Hours: 0800 - 1700 Pacific Time
Days: Monday - Friday
Tel:+1 510 337 6600
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Installation Manual | Encore Partyline Systems
Email: [email protected]
ii) Europe, the Middle East and Africa:
Hours: 0800 - 2000 Central European Time
Days: Monday - Friday
Tel:+49 40 853 999 700
Email: [email protected]
iii) Asia-Pacific:
Hours: 0800 - 1700 Pacific Time
Days: Monday - Friday
Tel:+1 510 337 6600
Email: [email protected]
d) Email Technical Support is available for all Clear-Com branded products free
of charge for the life of the product, or two years after a product has been
classified as obsolete, whichever comes first. To log or update a request, send
an email to: [email protected]
e) Support for Distributor and Dealer Sales
i) Distributors and Dealers may utilize the Customer Service Centers once a
system has been installed and commissioned. Clear-Com Systems and
Applications Engineers will provide support to the Distributor from the pre-sales
stage through to satisfactory installation for new system purchases. Customers
will be encouraged to contact their Dealer or Distributor with their installation and
technical support enquires rather than using the Customer Service Centers
directly.
f) Support for Direct Sales
i) Customers may utilize the Customer Service Centers once a system has been
installed and commissioned by Clear-Com Systems and Applications Engineers,
or in the case of project installations, once the Project Team has completed the
hand-over to the Support Centers.
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10.2
Return Material Authorization Policy
a) Authorizations: All products returned to Clear-Com or a Clear-Com
Authorized Service Partner must be identified by a Return Material
Authorization (RMA) number.
b) The Customer will be provided with an RMA number upon contacting ClearCom Sales Support as instructed below.
c) The RMA number must be obtained from Clear-Com via phone or email
prior to returning product to the Service Center. Product received by the
Service Center without a proper RMA number is subject to return to the
Customer at the Customer's expense.
d) Damaged equipment will be repaired at the Customer's expense.
e) Returns are subject to a 15% restocking fee.
f) Advance Warranty Replacements (AWRs);
i) During the first 30 days of the Standard Warranty Period: Once the equipment
fault has been verified by Clear-Com or its authorized representative, Clear-Com
will ship a new replacement product. The Customer will be provided with an RMA
number and be required to return the faulty equipment within 14 days of receipt of
the replacement or will be invoiced for the list price of a new product.
ii) During days 31-90 of the Standard Warranty Period: Once the equipment fault
has been verified by Clear-Com or its authorized representative, Clear-Com will
ship a like-new, fully refurbished replacement product. The Customer will be
provided with an RMA number and be required to return the faulty equipment
within 14 days of receipt of the replacement or will be invoiced for the list price of
a new product.
iii) To obtain an RMA number or request an AWR:
(1) North and South America, Asia-Pacific, and US Military:
Hours: 0800 - 1700 Pacific Time
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Installation Manual | Encore Partyline Systems
Days: Monday - Friday
Tel:+1 510 337 6600
Email: [email protected]
(2) Europe, the Middle East and Africa:
Hours: 0800 - 1700 GMT + 1
Days: Monday - Friday
Tel:+ 44 1223 815000
Email: [email protected]
iv) Note: AWRs are not available for UHF WBS Analog wireless intercom
systems. UHF WBS Analog wireless intercom systems out-of-box failures must be
returned to Clear-Com for repair.
v) Note: Out-of-box failures returned after 90 days will be repaired and not
replaced unless approved by Clear-Com Management.
vi) Note: AWRs are not available after 90 days of receipt of product unless an
AWR Warranty Extension is purchased at the time of product purchase.
vii) Note: Shipping charges, including duties, taxes, and insurance (optional), to
Clear-Com's factory are the responsibility of the Customer.
viii) Note: Shipping AWRs from Clear-Com is at Clear-Com's expense (normal
ground or international economy delivery). Requests for expedited shipping (E.g.
"Next-Day Air"), customs duties, and insurance are the responsibility of the
Customer.
10.3
Repair Policy
a) Repair Authorizations: All products sent to Clear-Com or a Clear-Com
Authorized Service Partner for repair must be identified by a Repair
Authorization (RA) number.
b) The Customer will be provided with an RA number upon contacting ClearCom Customer Services as instructed below.
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Installation Manual | Encore Partyline Systems
c) The RA number must be obtained from Clear-Com via phone or email prior
to returning product to the Service Center. Product received by the Service
Center without a proper RA number is subject to return to the Customer at the
Customer's expense.
d) Return for Repair
i) Customers are required to ship equipment at their own cost
(including transportation, packing, transit, insurance, taxes and duties)
to Clear-Com's designated location for repair.
(1) Clear-Com will pay for the equipment to be returned to the
Customer when it is repaired under warranty.
(2) Shipping from Clear-Com is normal ground delivery or international
economy.
(3) Requests for expedited shipping (E.g. "Next-Day Air"), customs
duties, and insurance are the responsibility of the Customer.
ii) Clear-Com does not provide temporary replacement equipment
("loaner") during the period the product is at the factory for repair.
Customers should consider a potential prolonged outage during the
repair cycle, and if required for continuous operations purchase
minimum spare equipment required or purchase an AWR Warranty
Extension.
iii) No individual parts or subassemblies will be provided under
warranty, and warranty repairs will be completed only by Clear-Com or
its Authorized Service Partner
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Installation Manual | Encore Partyline Systems
11
Compliance
Clear-Com, LLC, an HME Electronics, Inc, company is committed to compliance with the laws and
regulations of each country where Clear-Com markets the product below.
Applicant Name : Clear-Com, LLC
Applicant Address : 1301Marina Village Parkway, Suite 105, Alameda, California 94501, United
States
Manufacturer Name : HM Electronics, Inc.
Manufacturer Address : 2848 Whiptail Loop, Carlsbad CA 92010 USA
Country of Origin : USA
Brand : Clear-Com
This document was prepared in the English language. In case this document is translated into
another language and a discrepancy arises between languages, the English version shall prevail
as being the version which best expresses the intent of the parties. Any notice or communication
given in conjunction with this document must include an English version.
Caution: All products are compliant with regulatory requirements detailed in this document
when the user follows all the installation instructions and operating conditions per Clear-Com
specifications.
Caution: Product modifications not expressly approved by the party responsible for compliance
can void the user’s authority to operate the equipment.
Caution: Use of accessories and peripherals other than those recommended by Clear-Com may
void the product’s compliance as well as the user’s authority to operate the equipment.
US Compliance Notice
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.
Note: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at his own expense.
Canada Compliance Notice
This device complies with Industry Canada’s license-exempt RSSs. Operation is subject to the
following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
Avis de conformité pour le Canada
Cet appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts
de licence. L’exploitation est soumise aux deux conditions suivantes:
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(1) cet appareil ne doit pas provoquer d’interférence, et
(2) cet appareil doit accepter toute interférence radioélectrique subie, même si l’interférence est
susceptible d’en compromettre le fonctionnement.
European Union (CE mark)
The CE marking indicates compliance with the following directives and standards.
Directives:
•
•
•
Electromagnetic Compatibility Directive 2014/30/EU
Low Voltage Directive 2014/35/EU
RoHS Directive 2011/65/EU
Standards:
•
EN 55032, EN 55024, EN 60950-1, EN 50581
Maritime Certification
The DNV-GL mark indicates conformity with DNVGL-CG-0339 Edition November 2016.
Location Classes:
The influence of the ambient environment on equipment depends upon the field of application on board.
Environmental testing therefore implies tests being directly related to intended location on board as well as
general tests, which are not directly related to location. There are five location classes: Temperature, humidity,
vibration, enclosure and EMC. The allowed location of installation on board depends on the maritime approved
location class.
Regulatory model MS802 was DNV-GL type approved for Temperature Location Class A, Humidity Location
Class A, Vibration Location Class A, EMC Location Class A and Enclosure Location Class A.
Regulatory model MS802 is allowed to be installed in the control room. For more details please follow the
Table 1 Location Class below.
Regulatory model MS802 is not allowed to be installed in bridge, machinery spaces, pump room, holds, rooms
with no heating and open deck.
Note: MS802 must be installed in a rack with the bottom of the unit mating to a flat surface from a mounting
shelf or mounting support. The mounting shelf or support must be secured to the rack in a manner that ensures
it will remain flat during vibration.
Regulatory models RM802 and KB802G were DNV-GL type approved for Temperature Location Class A,
Humidity Location Class A, Vibration Location Class A, EMC Location Class A & B and Enclosure Location
Class A.
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Regulatory models RM802 and KB802G are allowed to be installed in the control room and bridge. For more
details please follow the Table 1 Location Class below.
Regulatory models RM802 and KB802G are not allowed to be installed in machinery spaces, pump room,
holds, rooms with no heating and open deck.
Regulatory models RS801 and RS802 were DNV-GL type approved for Temperature Location Class B,
Humidity Location Class A, Vibration Location Class A, EMC Location Class A and Enclosure Location Class
B.
Regulatory models RS801 and RS802 are allowed to be installed in machinery spaces. For more details
please follow the Table 1 Location Class below.
Regulatory models RS801 and RS802 are not allowed to be installed in control room, bridge, pump room,
holds, rooms with no heating and open deck.
RS-801-IM, RS-802-IM
Temperature
0°C to +55°C
Humidity
Relative humidity up to 96%
Vibration
Frequency range: 2–13.2 Hz,
Amplitude: 1.0 mm (peak
value)
Frequency range: 13.2–100 Hz,
Acceleration amplitude: 0.7 g
EMC
DNVGL-CG-0339 - Class A
Enclosure, Salt-Mist
IP 56
MS-802-IM
Page 58
Temperature
0°C to +50°C
Humidity
Relative humidity up to 96%
Vibration
Frequency range: 2 –13.2 Hz,
Amplitude: 1.0 mm (peak value)
Frequency range: 13.2–100 Hz,
Acceleration amplitude: 0.7 g
EMC
DNVGL-CG-0339 - Class A
Enclosure
IP20
Installation Manual | Encore Partyline Systems
RM-802-IM, KB-802GM-IM
Page 59
Temperature
0°C to +50°C
Humidity
Relative humidity up to 96%
Vibration
Frequency range: 2–13.2 Hz,
Amplitude: 1.0 mm (peak value)
Frequency range: 13.2–100 Hz,
Acceleration amplitude: 0.7 g
EMC
DNVGL-CG-0339 - Class A & B
Enclosure
IP20
Installation Manual | Encore Partyline Systems
Acknowledgement
Numerous employees, customers, consultants and sales partners in the
40+ years of Clear-Com history have contributed to this manual. We
recognize and applaud these valuable contributions. Two individuals
provided exceptional input: Charlie Butten, development engineer and
the inventor of the original Clear-Com Partyline technology, and Emil
Matignon (1955-2016), partyline support specialist and author/keeper
of many unique applications for the PL product family. Without them,
Clear-Com Partyline would not be the ubiquitous and highly soughtafter product it is today.
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