TB8100 Service Kit User’s Manual Working with Channel Profiles 117
The line level units are dBm for the balanced line output and Vpp (voltage
peak-to-peak) for the unbalanced line output.
Gated Each line output has a Gated check box. Generally, the check box is selected.
This outputs audio only when the required conditions (RSSI level, SINAD
level, subaudible signalling) are met. When the check box is cleared, receiver
gating is not applied to the audio on the line output. This makes continuous
listening to the channel possible, for example, when troubleshooting.
Tip: You can configure the base station to output line audio
differently in different circumstances. Define two profiles with the
different options. Create two channels that are the same except for
the assigned channel profiles. Then define Task Manager tasks that switch the
base station between the two channels, for example, when it receives a
particular subtone.
Repeater Options
In the Add or Edit Channel Profile dialog box, Signal Path tab, the Talk
through repeater box specifies the audio path from receiver to transmitter.
Important: If the base station uses the same frequency for
transmitting and receiving, it cannot function as a repeater. You
must select ‘Disabled.’
Note: You can vary the gain that the base station applies to talk
through audio. See “RF Configuration” on page 108.
Microphone Panel
In the Add or Edit Channel Profile dialog box, Signal Path tab, the two Mic
drop-down lists specify the line output and transmit audio paths for any
microphone connected to the control panel.
Option Description
Disabled There is no audio path. The base station does not function as a
repeater.
RxA-TxA The base station filters received audio using the receive Path A
filter and transmits it using the transmit Path A filter.
RxA-TxB The base station filters received audio using the receive Path A
filter and transmits it using the transmit Path B filter.
RxB-TxA The base station filters received audio using the receive Path B
filter and transmits it using the transmit Path A filter.
RxB-TxB The base station filters received audio using the receive Path B
filter and transmits it using the transmit Path B filter.
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