Stewart Audio Gemini, Owner'S Manual

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Gemini 7
CONTROLLER OPTIONS
1. Contact Closure Switching (Momentary)
Third party control systems such as Crestron or AMX can easily connect to this Dual IMC using the LV
(low voltage) switch input A SPDT switch can also be used to control each controller Please see the
switch wiring on page 9 for connection to the LV switch input
2. Dedicated 5 Button Wall Keypad
The IMC controller can also be switched via the dedicated 5-button wall keypad The 5 button keypad
will come standard for some dual motor control situations if IR control has been specified the IR eye
sensor is contained within the keypad The 5-button keypad will then connect to the RJ-25 active port
(Port 0) located on the screen IMC board The keypad uses digital signaling to transmit IR and screen
commands to the IMC control board The use of this switch also features a “stop” command In this
fashion, one could stop the motors while they are in motion The hookup cable required for the dedi-
cated keypads is a standard Telecommunication 6 - conductor type in which only 4 of the conductors
are used for connectivity at the keypad’s terminal
3. IR (Infrared) Control – optional
Use the hand held dual channel IR transmitter to control the screen and masking Aim the transmitter in
the general direction of the screen or keypad so that the IR signal can be seen by the eye sensor You
can use this transmitter to “learn” the IR codes to other universal IR controllers IR control of the motors
will duplicate the functionality of the 5-button wall keypad You will have control of motor down, motor
up and stop An optional IR eye sensor can be plugged directly into the IMC control board in lieu of us-
ing the wall keypad’s sensor Do not use other manufacturer’s IR eye sensors as they are not compatible
with the Dual IMC controller
4. STI (Screen Trigger Interface) Control
You can also operate this control from a 1 to 30 volt dc trigger source Most projectors today contain
a 12 VDC trigger output that can be connected directly to the Dual IMC controller Simply connect
the positive trigger output lead to LV pin # 4 and connect the negative to Pin # 1 on the screen board
The trigger input and LV switch will function simultaneously In this fashion, both the trigger and the LV
switching input will operate the motors in a “selective switching” mode Should one wish to retract
the motors while the projector’s trigger is activated a press of the “up” button on the wall switch will
retract the screen You can also deploy each motor without activating the screen trigger by pressing
the respective “down” button on the wall switch