Clear-Com HLI-FBS - Manual (Page 127)

13.3.3 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 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 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) 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.
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).
127 HelixNet Partyline User Guide