3 two-wire connection to cellcom / freespeak, Two-wire connection to cellcom / freespeak – Clear-Com HLI-FBS User Manual
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9.4.3 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.
For the procedure, see
5.6.2 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 (CH-A or CH-B) 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 or CAT5 cable types 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 (rear) 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)
on the Basestation
[ ].
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 that 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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HelixNet Partyline User Guide