Question:  We are a rental house interested in stocking the HelixNet HMS-4X base station, what optional modules are available for this base station and how many can be fitted to the base station at one time?
Answer:  The HelixNet HMS-4X base station is capable of supporting up to three plug-in modules, the two modules currently available for the base station are: 









Enables interoperability with Tempest, CellCom / FreeSpeak, and HME DX210 systems, and both Clear-Com and RTS analog party-line systems.
The module provides two analog party-line 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
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 2 for power and audio.
• Pin 3 for audio.
Note the HelixNet basestation does NOT power the PL line , so the external PL system must be powered. 









Enables interoperability with the Eclipse digital matrix system and other four-wire audio sources (telephone hybrids, AB-120/-100, PA (Public Address) / SA (Stage Announce) systems.
The module also enables HelixNet-to-HelixNet connections using four-wire audio ports. Two four-wire connectors (Ethercon type RJ45 socket) are provided with the following pin out:
Pin   Function
1      RS-422 data TX+
2      RS-422 data TX-
3      Audio to matrix +
4      Audio from matrix+
5      Audio from matrix-
6      Audio to matrix-
7      RS-422 data RX+
8      RS-422 data RX-
Note when connecting to an Eclipse matrix - you can use a straight CAT5 cable ,