Listen LR-600, Руководство пользователя

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Setup & Pr
ogramming
10
LR-600 Setup and Programming continued
Setting the SQ Switch
For more information on SQ, see Listen SQ TM on page 18.
The SQ function improves the noise performance of the LR-600 by at least 20dB. To use this
function, the transmitter must also be a Listen brand transmitter with SQ.
To use the SQ function, do the following:
· Verify the transmitter has SQ and the SQ function is turned on.
· Move the SQ switch on the back of the unit to the ON position.
· If you are using the LR-600 with another brand transmitter or if you don’t want to use the SQ
function, move the SQ switch to the OFF position.
To use Listen SQTM, slide the switch to
the ON position. Your transmitter’s SQ
function must also be on.
Programming the Channel Select Button
The channel select button on the top of the unit is designed to give users the ability to choose
between different channels. If you don’t want to give users this function, it is recommended that
you lock this feature as described on page 9.
If you want to use this function, you must program the unit for the channels you are using. For
example, you are using 72 MHz channels A, E and I. You would only want the LR-600 to receive
on channels A, E, and I. When the Channel Select button has been programmed, the
unit will select A the first time the user presses the button; when the user presses the button suc-
cessively, E will be selected, then I, then A again.
Note: The UP button on the rear panel and Channel Select button on the top of the unit per-
form the same function for end users. To program the unit so that it only receives on certain
channels, do the following:
· Press the UP and DOWN buttons together and release. The PGM icon is displayed.
· Press the UP or DOWN button to select channels.
· When you get to a channel that you don’t want displayed, press the SEEK button.
· The L/O icon will be displayed indicating the channel is locked out and will not be displayed.
· Repeat for all channels that you want locked out.
· When done, don’t press a button for 10 seconds and the unit will return to normal operation.
In the example above, only three channels are used. Therefore, you will need to lock out 54
channels from use.
Press the Channel UP and DOWN buttons at the same
time to enter Program mode (shown by the PGM icon).
While in Program mode, press SEEK to lock out a channel
that you do not want available to the end user. L/O will
show on the display.