NETWORK PARTYLINE INTERCOM SYSTEM
HelixNet Partyline
Optimum Flexibility and Performance
For Highly-Dynamic Production Communications
HelixNet Partyline Platform
The Clear-Com HelixNet platform is the latest stage in intercom
evolution. Based on the groundbreaking I.V. Core Technology,
HelixNet delivers the legendary “Clear-Com Sound” you’ve come
to expect, along with the added benets of network intelligence,
ease of operations and simplied cabling.
Cabling Simplicity
Employ exible cable
options with the ability
to leverage an existing
cable infrastructure.
Network Intelligence
Central administration
of network from main
Audio Clarity
Hear every cue with
absolute clarity and
focus on information
without distraction.
station with a single cable.
ABOUT I.V. CORE TECHNOLOGY
Clear-Com’s Instant Voice Core (I.V. Core) is a suite of Internet Protocol (IP)
technologies at the heart of all HelixNet products. I.V. Core delivers:
• Low latency through the use of an intelligent decision engine that routes
• Superb audio quality through the use of wideband CODECS, enabled thanks
• Encryption, noise-reduction, and error-recovery through proprietary algorithms
Traditional Voice-Over-IP solutions mix and encode audio at the server, consuming
valuable IT network resources, reducing audio quality, and adding latency. In contrast,
the I.V. Core routes only packets that contain actual voice data, mixing and encoding
them just once at the client, thereby delivering a higher quality voice communications
experience than ever before possible.
2 Clear-Com HelixNet Partyline
only the audio packets containing needed voice information.
to a highly optimized design that eliminates multiple encode/decode cycles.
optimized for human voice characteristics.
MAIN STATION
The HMS-4X HelixNet Main Station provides power and up to 20
networked channels of audio to support up to 20 digital beltpacks. The
sleek 1RU digital system can be mounted into any standard 19" rack.
MAIN STATION HIGHLIGHTS
High Channel Density. Up to 20 networked intercom
channels and power for beltpacks transmitted over
a single shielded twisted-pair (Ex. microphone cable,
CAT5, or CAT6 cable).
No Rewiring Required. System designed to preserve
investment by operating on existing infrastructure.
Single Cable Operation. Fewer cables save time
and cost during setup and conguration.
No Hum. No Buzz. All-digital system offers immunity
to electro-magnetic interference and ground loops.
High User Capacity. A single HMS-4X Main Station,
offering four channels, can support up to 20 beltpacks.
Main Stations can be connected over LAN or ber to
support many beltpacks over a network.
Quick Startup. Get up-and-running fast and effortlessly
with easy plug-and-go installation and hardware
auto-discovery.
Seamless Linking. Main Stations share resources over
a LAN or Fiber link so users can select local or remote
partyline channels and program audio feeds from the
beltpack. Optional two-wire and four-wire interface
modules further extend connectivity to existing analog
partyline or matrix intercoms.
Easy-to-Navigate Menu. Quick access to system settings
and conguration for fast and painless set up.
MAIN STATION FEATURES
Front Panel
• Remote Microphone Kill
• Stage Announce Out
• Line Status Indication
• Large Format OLED Displays
• Up to 10 Characters for User-dened Labels
• Talk and Call Keys
• Speaker and Program Level Controls
• Rotary Channel Level Controls
• USB-A and USB Micro-AB Ports
• XLR Headset Connector
• Microphone and Headset On/Off Key
Back Panel
• Universal Power Connector
• GPIO- DB-25 (Four Relays and Four Opto Inputs)
• Hot Microphone Output
• Stage Announce (SA) Out
• Program Input
• XLR-3M and XLR-3F Powerline Intercom Ports
• Ethernet Module
• Built-in Expansion Bays for Optional Interface Modules
including Ethernet LAN and Fiber Linking
Easy Updates. Apply rmware maintenance and
upgrades easily via USB ports.
Clear-Com HelixNet Partyline 3
BELTPACK
Delivering superb digital sound quality, the two-channel HBP-2X HelixNet
Beltpack enables access to two of any four system channels over a
single cable. The rugged, ergonomically designed HelixNet Beltpack
was created to perform on the big stage, offering reliability and durability
that will withstand the most demanding production environments.
BELTPACK HIGHLIGHTS
Channel Density. Similar to a source assignment panel,
a single cable gives every connected beltpack the
capacity to access all networked system channels.
Selectable Channels. The full-duplex, two-channel
beltpack can select up to two of the available system
channels and program audio feeds, each with individual
level control.
Save Resources. Networked audio is distributed over
a single shielded twisted pair, reducing the number
of cables to yield time and cost savings.
Passively Interconnection. Beltpacks can be set
up in daisy-chain or star congurations with no need
for active split boxes.
Clear-Com Sound: Legendary contoured audio
frequency response provides maximum intelligibility
and exceptional sound quality.
Efficient Administration. System conguration
and rmware upgrades are centrally managed
from the main station.
Intuitive Operations. Present logical channel labels
on the high-contrast, 10-character OLED display.
Effortless Navigation. Optimally positioned buttons
and volume knobs are easy to locate, identify and
control on the beltpack.
BELTPACK FEATURES
• Two-channel Beltpack
• Power and Audio over a Single Cable
• Program Audio with Separate Program Level Control
• User-Facing Keyset Controls
• Recessed Level Rotary Knob Controls
• Pushbutton Menu Access
• Integrated Mounting Strap Guide
• Tabletop Resting Supports
• USB Micro-AB Port
• XLR Lock Release
• Cast Aluminum Alloy Case
• High-resolution, Large Format OLED Display
(Up to 10 Characters for Unique Labels)
• Visual and Vibrating Call Alerts
• Ridge Guide for Tactile Navigation
and Mechanical Protection
• XLR-4M Headset Jack (5-Pin Option)
• 2.5 mm TRS Headset Jack
• XLR-3F Intercom Line
• XLR-3M Intercom Pass-through (Daisy-chain)
Highly Durable. Fabricated from lightweight cast
aluminum, the beltpack is able to endure the rigors
of intensive applications.
Mounting Flexibility. Sturdy beltclip, rubber bumpons
and integrated strap guide offer useful mounting options.
4 Clear-Com HelixNet Partyline
LINKING MODULES
HelixNet Main Stations accept Ethernet and Fiber as well as two-wire
and four-wire optional interface modules, offering seamless linking
over LAN or Fiber and connection to virtually all common two-wire
and four-wire audio systems.
HLI-ET2 ETHERNET MODULE
The HLI-ET2 Ethernet Linking Module provides a dual
LAN interface to connect to other HelixNet Main Stations.
Once connected, stations share partyline channels and
program audio, and make them available to any station
and beltpack on the linked system. All labels are transferred across the network automatically.
Technical Specifications
Dimensions
7.36in W x 2.24in H x 1.54in D (187mm x 57mm x 39mm)
Weight
13oz (0.35kg)
Connectors
LAN 1 and 2: (2) RJ-45 (Ethercon)
LAN Network Connection
10/100 BaseT, DHCP Capable
HLI-FBS FIBER MODULE
The HLI-FBS Fiber Linking Module provides a daisy-chain
ber interface to connect to other HelixNet Main Stations.
With Ethernet Modules, stations share partyline channels
and program audio, and make them available to any station
and beltpack on the linked system. Fiber Modules can be
mixed with Ethernet Modules in the same network.
Technical Specifications
Dimensions
7.36in W x 2.24in H x 1.54in D (187mm x 57mm x 39mm)
Weight
13oz (0.35kg)
Transceiver Connectors
2 x SFP LC duplex Single Mode (Sales option for Multi-Mode)
Clear-Com HelixNet Partyline 5
INTERFACE MODULES
HLI-2W2 TWO-WIRE INTERFACE MODULE
Designing a seamless interface between analog two-wire
and digital systems is no simple feat, yet Clear-Com has
done just that. The HLI-2W2 Interface Module enables
two-channels of Clear-Com or RTS intercom to transparently interface with digital HelixNet intercom channels.
This two-wire module preserves the wideband two-wire
frequency response, is conveniently packaged in a rugged,
pluggable module, and is easily assignable to any of the
HelixNet Main Station intercom channels.
Technical Specifications
Dimensions
7.36in W x 2.24in H x 1.54in D (187mm x 57mm x 39mm)
Weight
16oz (0.45kg)
Connectors
Intercom Line: (2) 3-pin XLR–F
Partyline
Maximum Level Before Clipping: 6dBu
Nominal Input Level: -18dBu (C-C), -12dBu (RTS)
Input Impedance: >= 10KΩ bridging
The following specified for a route to four-wire input at 0dBu in:
Frequency Response: 100 Hz - 10 kHz ±3dB
Distortion: <0.2% THD @ 1kHz
Noise: <-55dBu
The following specified for a route from a four-wire output at 0dBu out:
Frequency Response: 40 Hz - 10 kHz ±3dB
Distortion: <0.2% THD @ 1 kHz
Noise: <-75dBu
Auto-nulling and Echo Cancellation
RTS/Clear-Com Selectable
Termination: External
Power: 30V max external
Power Requirements
0.025mA/channel
DC Voltage Range: 20-30 volts
HLI-4W2 FOUR-WIRE INTERFACE MODULE
The HLI-4W2 Interface Module provides an easy way to
interface common four-wire audio paths such as matrix
ports, cameras, and telephone circuits with a HelixNet
Main Station. Each of the two ports employ both
transformer and electrical balancing to ensure incoming
and outgoing audio paths are free of hum and noise.
Technical Specifications
Dimensions
7.36in W x 2.24in H x 1.54in D (187mm x 57mm x 39mm)
Weight
13oz (0.35kg)
Connectors
Intercom Line: (2) RJ-45 (Ethercon)
Four-wire Option Module Inputs
Maximum Level Before Clipping: 18dBu
Nominal Input Level: 0dBu (selectable)
Input Impedance: >= 10KΩ
The following specified for a route to four-wire output at 0dBu out:
Frequency Response: 20Hz - 10kHz ±3dB
Distortion: <0.2% THD @ 1kHz
Noise: <-65dBu
Four-wire Option Module Outputs
Maximum Level Before Clipping: 18dBu
Nominal Output Level: 0dBu (selectable)
Output Impedance: <= 100Ω
The following specified for a route from a dynamic headset:
Frequency Response: 300 Hz - 12 kHz ±3dB
Distortion: <0.1% THD @ 1 kHz
Noise: <-55dBu
6 Clear-Com HelixNet Partyline
TECHNICAL SPECIFICATIONS
MAIN STATION
dBu is an absolute measurement. 0 dBu is
referenced to 0.775 volts RMS.
Channels
Four local plus any networked
intercom channels
One local and any networked
program audio feeds
(Assignable to intercom channels)
Connectors
Intercom Line: (4) 3-pin XLR–M
Headset: 4-pin XLR–M
USB: Type A & Micro AB
Program: 3-pin XLR–F
SA (Stage Announce): 3-pin XLR–M
Hot Mic / IFB Interface: 1/4" (0.64 cm)
phone jack
GPI: 25 way D-type female
Microphone Pre-amplifier
Headset Mic Impedance: 200Ω (Dynamic)
Headset Mic Voltage: 1.7V (Electret selectable)
Limiter: +23dB
The following specified for a route
to four-wire output at 0dBu out:
Mic Gain: 60dB (Dynamic),45dB (Electret)
Frequency Response: 300Hz – 10 kHz ±3dB
Contoured for Intelligibility
Distortion: <0.2% THD @ 1kHz
Noise: <-55dBu (Dynamic),
<-65dBu (Electret)
Headphone Amplifier
Load Impedance: >32Ω
Output Level: +12dBu before clipping
Sidetone: -12dBu (selectable)
The following specified for a route from a
four-wire input at 0dBu in:
Max Gain: 0dB
Frequency Response: 40Hz - 10kHz ±3dB
Distortion: <0.1% THD @ 1kHz
Noise: <-65dBu
Headphone Limiter: 0dBu (selectable)
Loudspeaker Amplifier
Load Impedance: 8Ω
Output Level: +18dBu before clipping
The following specified for a route
from a four-wire input at 0dBu in:
Max Gain: 18dB
Frequency Response: 200Hz - 10kHz ±3dB
Distortion: <0.1% THD @ 1kHz
Noise: <-50dBu
Program Line Input
Maximum Level Before Clipping: 18dBu
Nominal Input Level: 0dBu (selectable)
Input Impedance: >= 10KΩ
The following specified for a route
to four-wire output at 0dBu out:
Frequency Response: 20Hz - 10kHz ±3dB
Distortion: <0.2% THD @ 1kHz
Noise: <-65dBu
Stage Announce Output
Maximum Level Before Clipping: 18dBu
Nominal Output Level: 0dBu (selectable)
Output Impedance: <= 100Ω
The following specified for a route
from a dynamic headset:
Frequency Response: 300Hz - 12kHz ±3dB
Distortion: <0.1% THD @ 1kHz
Noise: <-55dBu
Hot Mic Output
Maximum Level Before Clipping: 12dBu
Nominal Output Level: 0dBu (selectable)
Output Impedance: <= 100Ω
The following specified for a route
from a dynamic headset:
Frequency Response: 300Hz - 12kHz ±3dB
Distortion: <0.2% THD @ 1kHz
Noise: <-55dBu
Main Power
Input Voltage Range: 100 - 240VAC
Input Frequency Range: 50 - 60Hz
Input Power: <= 250VAC
Output Voltage: +/-29VDC ± 1V
Output Current per Channel: 1.5A (continuous)
Power Connector: IEC60320-1-C14
Environmental
Max temperature is 40ºC (104ºF)
0 - 90% relative humidity
Dimensions
19" W x 1.75" H x 13" D
(483mm x 44mm x 320mm)
BELTPACK
Channels
Two intercom channels (Selectable)
Program Audio (Assignable from Main Station)
Connectors
Intercom Line: (2) 3-pin XLR–M–F
Headset: 4-pin XLR–M & 2.5mm TRS jack
USB: Micro AB
Microphone Pre-Amplifier
Headset Mic Impedance: 200Ω (Dynamic)
Headset Mic Voltage 1.7V (Electret selectable)
Limiter: +23dB
The following specified for a route to
four-wire output at 0dBu out:
Mic Gain: 60dB (Dynamic), 45dB (Electret)
Frequency Response: 300Hz – 10 kHz ±3dB
Contoured for Intelligibility
Distortion: <0.2% THD @ 1kHz
Noise: <-55dBu (Dynamic), <-65dBu (Electret)
Headphone Amplifier
Load Impedance: >32Ω
Output Level: +12dBu before clipping
Sidetone: -12dBu (selectable)
The following specified for a route from
a four-wire input at 0dBu in:
Max Gain: 0dB
Frequency Response: 40Hz - 10kHz ±3dB
Distortion: <0.1% THD @ 1kHz
Noise: -65dBu
Headphone Limiter: 0dBu (selectable)
Dimensions
6" H x 4" W x 1" D
(152mm x 102mm x 25mm)
Weight: 16oz (.454kg)
Power Requirements
4W
DC Voltage Range: 30-60 volts
Environmental
Max temperature is 45ºC (113ºF)
0 - 90% relative humidity
Clear-Com HelixNet Partyline 7
About Clear-Com
®
Clear-Com, an HME company, is a global provider in professional voice communications systems since
1968. We develop and market proven intercom technologies such as Analog & Digital Partyline, Digital
Matrix, Wireless and Intercom-over-IP systems for critical communication applications in broadcast,
performance venues, military, government and enterprise markets. Recognized for our legacy of intercom
innovations, production teams around the world have come to depend on Clear-Com for clear, reliable
and scalable communications solutions.
About HM Electronics, Inc. (HME)
HM Electronics, Inc. is a diverse group of companies providing solutions that enhance productivity
and customer service in markets including restaurants, sports and professional audio. Founded in
1971, we sell, service and support products in 89 countries worldwide, via company-owned ofces
in the U.S., Canada, Europe, and China, and an extensive network of HME-authorized distributors,
dealers and service agents. Every day quick service restaurants take over 24 million orders using
HME systems. With the recent acquisition of Clear-Com, HME is the world’s leading provider of
professional intercom systems.
Americas and Asia-Pacific Headquarters
California, United States
Tel: +1.510.337.6600
Email: SalesSupportUS@clearcom.com
Europe, Middle East, and Africa Headquarters
Cambridge, United Kingdom
Tel: +44 1223 815000
Email: SalesSupportEMEA@clearcom.com
China Office
Beijing Representative Ofce
Beijing, P.R.China
Tel: +86-10-65811360/65815577
www.clearcom.com
© 2013. Clear-Com LLC. All rights reserved.
® Clear-Com and the Clear-Com logo are
registered trademarks of HM Electronics, Inc.
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