Beyerdynamic S 900 Operating Instructions Manual page 35

AF input, 4-pin mini XLR for microphones (lavalier, neckworn mics). For
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connection please refer to chapter 2.5 "AF Connection".
ON/OFF switch
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(ON = switch to "ON" position; OFF = switch to "OFF" position).
Switch off the transmitter when not in use.
TS 900 C only: Battery status LED to indicate the power on / off
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and battery status.
(a) When the beltpack transmitter is switched on this LED will flash for a
moment to indicate the normal battery status.
(b) When the LED stays red after having switched on the transmitter the
battery is to weak and must be replaced.
Transmitting antenna
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LC-Display
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Infrared receiving diode for ACT function.
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Gain control to adjust input gain.
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GT/MT switch: When you use electric guitars this switch must be
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in the "GT" position.
In the GT mode the gain control is deactivated. Switch to the
"MT" position when you use condenser and wired microphones. In the
MT mode the gain control is activated.
Battery compartment and cover for two 1.5 V batteries (AA)
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or TS 900 AP rechargeable battery pack.
TS 900 C only: Charging contacts for TS 900 AP battery pack only
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(not supplied).
Removable belt clip can be rotated 360°. To remove use a
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screwdriver at a 45° angle.
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