3 two-wire connection to cellcom / freespeak – Clear-Com HLI-FBS User Manual
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13.4.3
Two-wire connection to CellCom / FreeSpeak
To connect your HelixNet Partyline system to a CellCom / FreeSpeak basestation (Main
Station), using a two-wire connection:
1)
On the HMS-4X Main Station, configure the Module Settings for the two-wire
interface module. See 4.6.2 Configuring a Two-wire interface module.
Note:
Check that the two-wire module is configured for Clear-Com systems (the
default) and enable Auto-nulling. Auto-nulling helps to reduce echo while
talking on a two-wire audio system.
2)
There are two partyline channels on the CellCom / FreeSpeak basestation (CH-A
and CH-B). Before connecting the HMS-4X Main Station to the basestation, ensure
that the partyline LED on the front panel for the selected channel is off.
Off indicates that the partyline connection is currently disabled from the basestation.
Note:
If the channel is currently enabled, the partyline LED is lit
red
.
3)
Physically connect the HMS-4X Main Station to one of the two partyline channels on
the CellCom / FreeSpeak basestation (Main Station).
Powering the connection:
You must power the connection between the systems using either a dedicated power
supply (such as the PK-7, PS-702, or PS-704), or a powered Encore Main Station
(such as the MS-702 or MS-704).
Tip:
For more information about the PK-7 or PS-70x power supply devices from Clear-Com, see
Connecting the systems:
Use standard microphone cable to connect the two systems. There are 3-pin XLR
connectors:
• On the HMS-4X Main Station two-wire interface module.
• On the back panel of the CellCom / FreeSpeak Basestation. Two 3-pin
XLR connectors, one male, one female, are provided for each of the two
partyline channels (CH-A and CH-B).
4)
On the CellCom / FreeSpeak basestation, press Enable on the front panel (located
directly beneath the LED for the connected channel (CH-A or CH-B)).The LED for the
channel is lit
red
.
The basestation automatically detects and configures the appropriate power and
termination settings when the channel is enabled. The basestation also remembers
that the channel is enabled the next time the basestation is powered up.
5)
On the CellCom / FreeSpeak basestation, press Enable again and hold. The
basestation activates auto-nulling on the connected channel. Auto-nulling helps to
reduce echo while talking on a two-wire audio system.
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