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Tempest900 2-Channel Operating Manual
2- Wired Intercom Channel Select (SEL) Button
The Intercom Channel Select (SEL) button is used to select one of the two intercom channels so that the intercom mode—2-Wire or 4-Wire—
and audio input and output levels, may be adjusted.
Pressing the CHAN SEL button puts the BaseStation into Menu Mode and advances to the Intercom Levels screen.
Pressing the CHAN SEL button a second time selects channel A, for the opportunity to select 2-Wire or 4-Wire or no wired connection, and IN
and OUT levels can be adjusted (see 2-Wire/4-Wire Select below.)
Additional presses advance through the intercom channels, and return to Operational Mode. The intercom channel selected is indicated by the
two “CHAN” LEDs located to the immediate right of the SEL button.
Also, in the Aux IN/OUT menu, SEL advances through the channels to adjust the Aux IN and Aux OUT levels.
3- Channel (CHAN) LEDs
In Operational Mode, the two Channel (CHAN) LEDs labeled A and B are always illuminated.
Enter Menu Mode, by pressing the Channel Select (SEL) button ([2] above). In Menu Mode, the Channel LEDs indicate the channel currently
selected for adjustment. Only one channel may be selected at a time.
4- 2-Wire/4-Wire Select (SEL) Button
The 2-Wire/4-Wire Select (SEL) button sets the wired intercom mode for each of the two intercom channels. When a channel is selected with
the CHAN SEL button, pressing the 2-Wire/4-Wire Select (SEL) button changes the selected intercom mode between 2-Wire, 4-Wire, or no
connection.
5- 2-Wire/4-Wire LEDs
The four 2-Wire/4-Wire LEDs indicate the currently selected intercom mode for each of the two intercom channels. If either a 2-Wire or 4-Wire
connection has been enabled for a particular intercom channel, the corresponding 2-Wire or 4-Wire LED indicator will be illuminated. When no
intercom has been enabled, the corresponding 2-Wire or 4-Wire LED indicators will be OFF.
6- IN Level Control
In Menu Mode, from the Intercom Levels screen, the IN control adjusts the incoming level of the currently selected wired intercom channel, from
the hard wired intercom system to the Tempest BaseStation. If 2-Wire is selected, the IN Level control adjusts the incoming level of the 2-Wire
signal. If 4-Wire is selected, the IN Level control adjusts the incoming level of the 4-Wire signal. If neither 2-Wire nor 4-Wire is selected, the IN
Level control is inactive. In addition to the intercom IN levels, the IN control is used to adjust Aux IN levels.
7- OUT Level Control
In Menu Mode, from the Intercom Levels screen, the OUT level control adjusts the outgoing level of the currently selected wired intercom
channel going to the hard wired intercom system from the Tempest BaseStation. If 2-Wire is selected, the OUT Level control adjusts the
outgoing level of the 2-Wire signal. If 4-Wire is selected, the OUT Level control adjusts the outgoing level of the 4-Wire signal. If neither 2-Wire
nor 4-Wire is selected, the OUT Level control is inactive. In addition to the intercom OUT levels, the OUT control is used to adjust Aux OUT
levels.
8- USB Connector
The USB connector is used to update the Tempest BaseStation rmware and is not used in normal operation.
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