Listen Technologies LT-800-150, Руководство пользователя

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17
LT-800 Troubleshooting (cont.)
Troubleshooting
There is not sufficient range
First make sure that the receivers you are using are operating properly, then make sure that
you have an antenna connected either to the top of the LT-800 transmitter or connected to
the back of the unit (but not both!). The antenna should be as high as possible and free of
obstacles. In addition make sure you are using the correct antenna type for your unit. You
might want to use a remote antenna (provided by Listen) that can be mounted on a mast
or wall. Try using different frequencies to find one with less interference.
There is interference in my transmission
Ensure that the transmitter and receivers are on the same channel. Verify that there are no
other transmitters on the same channel or a close channel to the one exhibiting interference.
Try different channels until you find a clear channel.
End users are adjusting the unit
First, lock the channel by pressing and holding the channel select UP button for 3 seconds.
Consider removing the Input, Mix Level and Contour knobs. You can order a rack mount kit
from Listen which offers a security cover that will limit access to the unit.
Several transmitters are operating in the same environment
For this, you’ll need to choose your transmitting frequencies carefully. See page 13-15 for
more details.
Can I have two antennas connected to my transmitter
No. The LT-800 transmitter can use only one antenna connection at a time. You may connect
either a top mount antenna through the top antenna port, or a remote antenna connected to
the BNC connection on the rear of the unit. If multiple antennae are simultaneously connected
to both ports the transmitter will have extremely poor broadcast performance and range.