Clear-Com HLI-FBS - Manual (Page 21)

2.2.1 HMS-4X Main Station rear panel: Interface modules
Up to three additional Interface modules (of the same or different types) can be fitted to the extension bay
of the main station. When looking at the rear of the module, expansion slot 1 is the left-hand slot,
expansion slot 2 is the middle slot, and expansion slot 3 is the right-hand slot.
Warning: The interface modules are not hot pluggable. Ensure that the Main Station is
powered down before inserting or removing modules.
Interface module
Description
Two-wire interface
module (HLI-2W2) This is a two channel device that enables interoperability with Tempest,
CellCom / FreeSpeak, and HME DX210 systems, and both Clear-Com
and RTS analog partyline systems. The module provides two analog
partyline connectors (3 pin female XLR connectors) with the following
pin out:
Pin Function
1 Ground
2 Power [Option for RTS mode: power and audio]
3 Audio
Table 13: two-wire Interface Module pin out
Use HelixNet main station menus to set the module for either RTS or
Clear-Com systems. If RTS mode is selected, you can set either:
• Pin 1 – common for audio and DC
• Pin 2 for power (30 Vdc and mixed audio channel 1 or 3)
• Pin 3 for power (30 Vdc and mixed audio channel 2 or 4).
21 HelixNet Partyline User Guide