Listen Technologies LT-141, Руководство пользователя

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PAGE 14
IR Frequency Selection/Control
The LT-84 provides the ability for the user to select the IR carrier frequency to be used for transmission of the
audio connected to the channel input. The carrier frequencies are at 2.3MHz, 2.8MHz, 3.3MHz, and 3.8MHz.
Refer to the diagram below for selection and control of the IR carrier.
1. Located on the right side of the channel interconnection and control is the IR frequency selection.
This is a four (4) position rotary selection switch. With the switch rotated to the counter clockwise stop,
the IR frequency is set to 2.3MHz. Position 2 is 2.8MHz, position 3 is 3.3 MHz, and position 4 is 3.8MHz.
2.. The.IR.Transmission.On/Off.switch.is.used.to.activate.the.IR.signal.transmission.for.this.channel..In.the.“up”.
position the IR signal is active. In the “down” position the IR signal for this channel is NOT active.
Note: If both channels are active and set to the same frequency the LT-84 will indicate an error state and enter
Power.Save.Mode..Power.save.mode.is.indicated.by.the.Green.Power.Indicator.LEDs.flashing.slowly...The.error.
mode.is.indicated.by.4.quick.flashes.on.the.Red.Level.Indicator.LEDS.and.then.turning.off.for.2.second,.repeated.
until the error is resolved.
IR Transmission
On/Off Control
IR Frequency
Selection