User guide

65 Tempest®24 00 4-Channel Wireless Intercom System
Master Mode
Master Mode is a Tempest BaseSta on func on that allows mul ple BaseSta ons to share audio without the presence of an
external hardwired intercom system power supply. Master Mode provides the necessary system termina on to the 2-Wire
hybrid circuitry in each of the Tempest BaseSta ons, so that common audio transfer can take place. Each BaseSta on in a
linked system provides its own power for audio. Either a single channel or all channels can be linked.
The only limit to the number of BaseSta ons that can be linked to share an audio channel is the impact of mul ple RF
sources in close proximity. As the number of BaseSta ons goes up and they begin to compete for RF spectrum, the range
will begin to decrease. See the sec on on Accu-Sync and the sec on on Antenna Loca on, to minimize the e ect of RF
compe  on.
It is necessary to use Master Mode when two or more Tempest BaseSta ons will be linked to share audio, and an external
hardwired intercom system is NOT present to provide power. When an external 2-Wire intercom system is connected to
Tempest, the external 2-Wire intercom system provides the required power and system termina on and Master Mode is
automa cally disabled.
On the BaseSta on that will be set to Master Mode, set the 2-Wire Intercom Type Select slide switches to the Clear-Com
posi on. Master Mode only works in Clear-Com mode. If “RTS” or “BAL” is selected, an a empt to set the BaseSta on as
master will result in an error message. If the slide switch is changed from Clear-Com to RTS or BAL, Master Mode will turn
OFF, and it will be necessary to return to the “Mul -Base Se ng” menu to re-enable Master Mode.
On slave BaseSta ons, set the slide switches to Clear-Com.
On each BaseSta on, set the shared intercom channel(s) to the 2-Wire mode. Master Mode only works for channels
selected for 2-Wire connec on.
Connect the appropriate intercom channel(s) of each BaseSta on that will share audio using the 3-pin XLR male and female
connectors on the back of the BaseSta on.
Complete all se ngs and connec ons before ac va ng Master Mode. Set one BaseSta on to Master Mode. Master Mode
se ngs are found at the “Set Base as Master” screen under the “Mul -Base Se ngs” main menu selec on. It is only
possible to set one BaseSta on as Master. The words “Master Mode” appear in the top line of the BaseSta on display,
to the right of the BaseSta on name, when Master Mode is ac ve. An a empt to set a second BaseSta on as master, will
result in an error message. It does not ma er which BaseSta on in a linked series is set to Master Mode.
Slave BaseSta ons – those not set as master – detect the master BaseSta on as a Clear-Com connec on.
An a empt to set a BaseSta on to Master Mode while connected to a 2-Wire system, will result in an error message. If a
BaseSta on has “Set Base As Master”  rst turned ON, and an external hardwired intercom system is connected later, the
Tempest BaseSta on will turn OFF Master Mode.
The “Set Base As Master” se ng will remain ON through a power cycle.