Clear-Com HLI-FBS - Manual (Page 121)

13.1.3 Connecting to an Encore Main Station
Note: The following procedure assumes that a two-wire interface module has been fitted to the
HMS-4X Main Station. For more information about interface modules, see 2.2.1 HMS-4X Main
Station rear panel: Interface modules.
Note: A HelixNet system with HLI-2W2 must be able to receive power from an analog partyline.
To connect your HelixNet Partyline system to an Encore Main Station (for example, the four
channel MS-704):
1) On the HMS-4X Main Station, configure the Module Settings for the two-wire
interface module (Menu mode > Module Settings). For the full procedure, 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 run the Auto-null. Auto-nulling helps to reduce echo while
talking on a two-wire audio system. You must run auto-null every time you
change the cabling.
2) Physically connect the HMS-4X Main Station to the Encore Main Station, using the 3-
pin XLR connectors:
• On the HMS-4X Main Station two-wire interface module.
• On the back panel (rear) of the Encore Main Station.
There are four channels (A, B, C and D), comprising two 3-pin XLR connectors, on
the MS-704.
Connect to the selected channel using standard microphone cabling.
Note: The Two-wire module will not function without an attached power supply on
the analog side of the interface.
Ensure that the connection is terminated (using the termination switch beside the
connectors). The default position for the switch is on.
3) On the Encore (MS-704) Main Station, adjust nulling for the selected channel (either
channel A, B, C or D on the MS-704). Nulling helps to reduce echo while talking on a
two-wire audio system.
Tip:
The amount of null that is required changes when you add or remove devices, or alter the
length of the cabling. For optimum performance, Clear-Com recommends that you adjust the
nulling every time you make a change to the system configuration.
Note: Ensure that all Talk keys/routes are disabled before auto-nulling commences.
To adjust nulling on a channel on the Encore Main Station (MS-704):
a) Turn the screwdriver-adjustable Sidetone Adjust control (just below the
headset connector) to the appropriate level.
b) Turn the screwdriver-adjustable Listen level control (the null control, located
just below the channel Talk button and Call LED) for the channel to the
appropriate level.
121 HelixNet Partyline User Guide