RTS TR-240 Especificaciones descargar pdf (Pagina 71)

Problem

“Echo” is heard in base station or beltpacks.

After changing the RF channel or running a

Clear-Scan, beltpack(s) no longer

communicate. The “Assoc” is incorrect on

the BTR-240 Status Screen and the Out of

Range alert is heard in the beltpack(s).

Possible Cause

• Acoustical Echo

\

• Line (network) Echo

(only if a 2-wire system is connected and

active)

• Beltpack(s) did not re-associate on the new

RF channel.

Solution

• First, ensure that any disconnected or

unused audio interfaces are turned off. If

necessary, perform a factory reset to turn

off all audio interfaces and ensure that all

audio levels are set to their defaults.

• Disable the <TALK> buttons of each

BTR-240 and TR-240 device one-by-one to

identify if the echo is coming from one

particular source.

• When the echo source(s) have been

identified, try the following echo avoidance

techniques at that device:

– Use a headset with a better acoustical

isolation between headphones and boom

microphone.

– Ensure all active devices have headsets

attached.

– Reduce the headset volume.

– Reduce the microphone gain.

– Reduce the sidetone level.

– Increase the squelch level (see Sections 5

and 8 for the BTR-240 and TR-240

instructions, respectively).

• First, follow all the solutions listed under

“Acoustical Echo” to ensure that is not an

acoustical echo problem.

• Verify that the 2-wire settings and

connections have been properly configured.

Use the following procedure:

– Turn off the 2-wire settings.

– Disable the <TALK> buttons on all 2-wire

devices.

– Turn the 2-wire settings back on.

– Talk into the base station local headset (or

an associated beltpack) for at least 5

seconds at a normal level with the

microphone spaced one index finger width

straight out from the user's mouth.

– Re-enable the <TALK> buttons on 2-wire

devices.

• If echo persists, reduce the 2-wire output

and/or input levels or increase the squelch

settings at the base station.

• The beltpack(s) that did not re-associate

will need to be rebooted.

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