Tempest 900 - Master Mode

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Tempest900 2-Channel Operating Manual
Master Mode
Master Mode is a Tempest BaseStation function that allows multiple BaseStations to share audio without the presence of an external hardwired
intercom system.
It is necessary to use Master Mode when two or more BaseStations are connected with the 2-Wire interface, and no external power source is
present. Master Mode provides necessary system power to the 2-Wire hybrid circuiting in each of the connected Tempest BaseStations. When
an external 2-Wire intercom system is connected to Tempest, the external 2-Wire intercom system provides the required power and system
termination and Master Mode is automatically disabled.
On the BaseStation that will be set to Master Mode, set the 2-Wire Intercom Type Select slide switch to the Clear-Com position. Master Mode
only works in Clear-Com mode. If “RTS” or “BAL” is selected, an attempt to set the BaseStation 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 “Multi-Base Setting”
menu to re-enable Master Mode.
On slave BaseStations, set the slide switch to Clear-Com.
On each BaseStation, set the shared intercom channel(s) to the 2-Wire mode. Master Mode only works for channels selected for 2-Wire
connection.
Connect the appropriate intercom channel(s) of each BaseStation that will share audio using the 3-pin XLR male and female connectors on the
back of the BaseStation.
Complete all settings and connections before activating Master Mode. Set one BaseStation to Master Mode. Master Mode settings are found at
the “Set Base as Master” screen under the “Multi-Base Settings” main menu selection. It is only possible to set one BaseStation as Master. The
letter “M” will appear in the top line of the BaseStation display, to the right of the BaseStation name, when Master Mode is active. An attempt
to set a second BaseStation as master, will result in an error message. It does not matter which BaseStation in a linked series is set to Master
Mode.
Note: Previous versions of Tempest rmware displayed Master Mode with the word “Master” in the top line.
Slave BaseStations – those not set as master – detect the master BaseStation as a Clear-Com connection.
An attempt to set a BaseStation to Master Mode while connected to a 2-Wire system, will result in an error message. If a BaseStation has “Set
Base As Master” rst turned ON, and an external hard wired intercom system is connected later, the Tempest BaseStation will turn OFF Master
Mode.
The “Set Base As Master” setting will remain ON through a power cycle.