Clear-Com TEMPEST 2400 - 2-Wire (Party-Line) Interface; Echo Cancellation Menu

53 Tempest®2400 2-Channel Wireless Intercom System
2-Wire (Party-Line) Interface
2-Wire party-line intercom systems carry one or two (depending on the system type) channels of full duplex intercom audio, plus
system power and other informaon on a single XLR-3M cable (2 wires and a ground). Each 2-Wire intercom type has a dierent
wiring scheme and unique line characteriscs. It is imperave to have the rear panel connecons and the front panel sengs
adjusted correctly for audio to pass correctly between the systems.
Steps to Congure a 2-Wire Intercom Connecon
• Adjust the Intercom Type Slide Switches to appropriate manufacturer compable seng- RTS, Clear-Com, Bal.
• Select 2-Wire connecon for the appropriate channels.
• Make the 3-pin XLR physical connecons to the Tempest BaseStaon and the 2-Wire system.
• Null the system.
• Adjust IN/OUT volume levels between the Tempest Wireless System and the 2-Wire system.
Always conrm that the 2-Wire intercom system is funconing properly before connecng the Tempest Wireless system.
Test each wired communicaon staon before connecng the wireless system. Conrm operaon of the wireless system
before connecng to the wired system.
Aer the slide switch is set correctly, the appropriate channels are set for 2-Wire operaon, the XLR cable connecons are
made, and power is provided by the 2-Wire system or Master Mode, then audio will pass between Tempest and the wired
system.
Audio may develop an echo that is heard in the wireless BeltStaons unl the system is nulled. The echo should not prevent
communicaon but is undesirable. The volume levels into or out from Tempest may need adjusng so that relave volumes
are the same.
Echo Cancellaon Menu
In the BaseStaon’s Tech Menu is a selecon for “Echo Cancellaon” (ECAN). This refers to soware that assists in removing echo
from 2-Wire intercom connecons. Hardware connecons need to be opmized with the null procedure to minimize echo in the
physical link so that the soware can remove any residual echo.
In the Tech menu, “Echo Cancellaon” is “ON” by default, but is only enabled for channels that are selected for operaon with a
2-Wire intercom and have a physical connecon to a 2-Wire system. See “Nulling” Secon of this manual.
If a 2-Wire intercom is never ulized in a system, ECAN can be turned “OFF” to ensure that it cannot create undesirable eects.
This should not be necessary, though, and it is recommended that you keep ECAN “ON” at all mes.
ECAN is disabled while the BaseStaon’s Auto-Null or Manual Null menu screens are acve, to ensure that the hardware is
opmized for echo reducon. When ECAN is enabled, it requires up to 10 seconds of acve audio to achieve maximum eciency.
Brief loud acve audio can help accelerate eciency.