Clear-Com HLI-FBS - Manual (Page 97)

9.3.3 Two-wire connection to Tempest
To connect your HelixNet Partyline system to Tempest, using a two-wire connection:
1. On the HMS-4X Main Station, configure the Module Settings for the two-wire interface module.
For the full 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. On the Tempest base station:
a. Select Clear-Com as the intercom type, using the slide switch
[ ] on the front panel.
b. Configure an intercom channel for two-wire connection:
i. Select the intercom channel (A or B), using the CHAN selection button
[ ] on the front panel.
ii. Select two-wire connection for the intercom channel, using the two-wire / four-
wire selection button [ ] on the front panel.
c. Enable Auto-null, using the Tempest menu screens. Enable Manual Null to remove any
residual echo, where desired.
Tempest has a Master Mode setting that supplies power to the two-wire connection. In this case,
no external power supply is required.
For more detailed information about setting up a two-wire connection on the Tempest
basestation, see your Tempest reference manual.
Always set the intercom type before you connect a two-wire intercom system to the
Tempest Basestation.
Never change the setting while the systems are connected. Changing the setting
while the systems are connected can damage the Tempest Basestation and / or the
other system (in this case, HelixNet Partyline).
95 HelixNet Partyline User Guide