Clear-Com Tempest900 - Manual (Page 55)

49 Tempest®900 2-Channel Wireless Intercom System
Controls
The 2-Wire Intercom Type Select Switch determines the type of 2-Wire intercom that may be
connected to the corresponding 2-Wire connectors on the rear panel of the BaseStation. Clear-
Com, RTS, or BAL (AudioCom) can be selected. These switches only affect 2-Wire operation and do
not control 4-Wire operation. The CHAN A&B switch selects the 2-Wire system type for both the
A and the B intercom channels.
The Intercom Channel Select (SEL) button selects one of the two intercom channels to allow
selection of 2-Wire or 4-Wire functionality and to allow the intercom audio IN and OUT levels
to be adjusted.
Pressing the Intercom Channel Select button once selects Menu Mode on the BaseStation and
displays the Intercom Levels screen on the LCD display. A second press selects channel A. The
intercom channel selected is indicated by one of the two CHAN LEDs located to the right of the
CHAN SEL button and on the LCD screen. Additional presses of the CHAN SEL button advances
through the remaining intercom channels. The next press of the CHAN SEL button will exit
Menu Mode and will cause all of the LEDs to be illuminated.
The 2-Wire/4-Wire Select (SEL) button selects the connection mode for operation of
each of the two intercom channels. Pressing the 2-Wire/4-Wire Select (SEL) button
changes the selected intercom mode between 2-Wire, 4-Wire or no wired connection.
In Operational Mode, the four 2-Wire/4-Wire LEDs indicate the currently selected
hardwired intercom connection mode for each of the intercom channels: 2-Wire, 4-Wire,
or no wired intercom connection.
The IN and OUT controls adjust the intercom volume level coming in to the Tempest BaseStation
from the hardwired intercom system or out to the hardwired intercom from the BaseStation. In
addition, these knobs adjust Aux IN/OUT levels.
To adjust the levels, press the CHAN SEL button to enter Menu mode, CHAN SEL again to advance
to the desired channel and rotate the IN or OUT controls. Note that the LCD display indicates the
currently selected levels.
Intercom Channel volume levels are expressed in Decibels (dB):
» 2-Wire IN: -13.5 to +10.5 2-Wire OUT: -10.5 to +7.5
» 4-Wire IN: -18 to +4 4-Wire OUT: -6 to +12
Always set the 2-Wire Intercom Type Select Switches prior to connecting the 2-Wire intercom to
the back of the Tempest BaseStation. Never change the switch setting while connected to a
wired intercom system. Failure to follow this procedure could damage the Tempest BaseStation
or the 2-Wire hardwired system.