HMSd4X Main Station
He l ix N e t ® Ne tw ork Partyl ine Int er com Syst em
HMS-4X Main Station
HMS-4X
The HMS-4X is a 1RU digital partyline main station that provides
power and up to 12 networked channels of audio to support up
to 20 digital beltpacks on a single shielded twisted-pair cable.
Key Features And Benefits
• Up to 3 Main Stations can be linked over LAN
• Up to 12 networked channels of audio
Description
The HMS-4X is a 1RU digital partyline
main station that offers 4 channels of
full-duplex audio and program audio
feed that can support up to 20 beltpacks
on a single station. The HMS-4X has
high channel density, offering up to
12 networked intercom channels and
power for beltpacks transmitted over
a single shielded twisted-pair cable
(mic, CAT5 or CAT6 cables). The system
is designed to operate on a facility’s
existing cabling structure so that no
additional cable runs are needed. The
front panel HMS-4X has easily accessible separate headset and mic buttons,
a speaker with a rotary knob to control
listen volume levels, multi-color LED
levels, a Stage Announce button Remote
Mic Kill button and an All Talk button.
Plug-and-go installation, quick access
to system settings, simple cable operations and fast update capabilities make
the HMS-4X easy to use.
Seamless Linking
Using single shielded twisted-pair cabling
infrastructures, up to three HMS-4X
Main Stations can be linked together
without the need for active splitter
devices. Linked stations are automatically detected and configured so that
any beltpack has access to any two of
the available active intercom channels.
In addition, audio and control data is
embedded onto each of the powered
circuits throughout the system. Redundant connections between systems are
possible with a returned cable on the end
of a daisy-chain. Administrators of the
system can lock or unlock parameters
for users via the main station’s Administration menu.
Optional Modules
Each HMS-4X has three rear-panel
interface module slots for a combination
of any four available modules: Ethernet,
Fiber, 4-Wire and 2-Wire. The Ethernet
module (HLI-ET2) provides a dual LAN
interface to connect multiple HMS-4X
Main Stations or can connect Remote
Stations (HRM-4X) and Speakers Stations
(HKB-2X) via Ethernet. The Fiber module
(HLI-FBS) provides a daily-chain fiber
interface connection to other HMS-4X
Main Stations. The 4-Wire module (HLI4W2) provides an easy way to interface
common 4-wire audio paths. The 2-Wire
module (HLI-2W2) provides connection
between Clear-Com or RTS intercom
to the HMS-4X Main Stations.
• Up to 20 beltpacks supported on one main station
• Large format yellow OLED, 10-character label displays
• Plug-and-go installation with hardware auto-discovery
• Line status indication
• Rotary channel level controls
• USB-A and USB Micro-AB ports
• Built-in expansion slots for optional interface modules
• Interface modules available: Ethernet, fiber, 2-wire and 4-wire
• Program input
• Speaker and Program level controls
• GPIO-DB-25 (4 relays and 4 opto inputs)
• Remote mic kill
HMS-4X Main Station
Rear Panel
1. Universal Power Jack
2. GPIO DB-25, Announce Out Relay
1
2
3
4
5
6
7
8
9
10
Rear Panel
3. Hot Mic Output - 1/4” TRS
4. Stage Announce Line Out
5. Program Input
Technical Specifications
dBu is an absolute measurement. 0 dBu
is referenced to 0.775 volts RMS.
Linking
Up to three Main Stations may be linked
using any combination of HLI-ET2 Ethernet
or HLI-FBS Fiber modules.
Channels
Four local plus any networked intercom channels
One local and any networked
program audio feeds
(Assignable to intercom channels)
Connectors
Intercom Line:
(2) 3-pin XLR–M
(2) 3-pin XLR–F
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
6. Line 1 (partyline)
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:
Noise: <-50dBu
<0.1% THD @ 1kHz
Program Line Input
Maximum Level
Before Clipping:
18dBu
Nominal Input Level: 0dBu (selectable)
Input Impedance:
>= 10KΩ
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:
Frequency Response: 20Hz - 10kHz ±3dB
Distortion:
<0.2% THD @ 1kHz
Noise:
<-65dBu
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)
Stage Announce Output
Maximum Level
Before Clipping:
18dBu
Nominal Output Level: 0dBu (selectable)
Output Impedance: <= 100Ω
Headphone Amplifier
Load Impedance:
>32Ω
Output Level:
+12dBu before clipping
Sidetone:
-12dBu (selectable)
The following specified for a route
from a dynamic headset:
Frequency Response: 300Hz - 12kHz ±3dB
Distortion:
<0.1% THD @ 1kHz
Noise:
<-55dBu
www.clearcom.com
® Clear-Com, the Clear-Com logo and HelixNet are registered trademarks of HM Electronics, Inc.
Copyright © 2014. Clear-Com, LLC. All rights reserved.
v.1_5/14
7. Line 2 (partyline)
8. Option Slot 1 (HLI-2W2 not included)
9. Option Slot 2 (HLI-ET2 not included)
10. Option Slot 3
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:
Input Frequency
Range:
Input Power:
Output Voltage:
Output Current
per Channel:
Power Connector:
100 - 240VAC
50 - 60Hz
<= 250VAC
+/-29VDC ± 1V
1.5A (continuous)
IEC60320-1-C14
Environmental
Max temperature is 40ºC (104ºF)
0 - 90% relative humidity
Dimensions
19" W x 1.75" H x 13" D
(483 mm x 44 mm x 320 mm)
Weight
5.83 lbs. (2.65 kg)
Notice About Specifications
While Clear-Com makes every attempt to maintain the accuracy of the
information contained in its data sheets, that information is subject
to change without notice. Performance specifications included in
this data sheet are design-center specifications and are included for
customer guidance and to facilitate system installation. Actual operating
performance may vary.
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