VoiceInterop AudioMate AM360r User Manual - page 9
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9
AM360r User Manual
revised 2014.02.29 for
Hardware Rev. DD
Firmware Version 1.00.26
COS (Carrier-Operated Switch) will stream audio to the IP network when the COS digital
input is asserted, either on the Single-Ended COS logic line or the E-lead of the balanced
audio interface.
NSQ (Noise Squelch) [deprecated] is only useful when the receive audio input of the
AudioMate 360r is connected to the radio receiver’s unsquelched discriminator source in
an analog FM radio. The AudioMate 360r will determine the presence of received signal
based on the reduction in white noise from the radio. If this setting is selected, then the
NSQ Gain setting must also be configured for proper operation.
COS+NSQ (AND Squelch) [deprecated] computes the Boolean logic value of the COS
AND NSQ. That is, if the COS digital input is asserted and the NSQ detector is also active,
then the AudioMate 360r will stream receive audio to the IP network. The most common
application for this setting would be to use the noise squelch detector to ascertain that
an intelligible signal is present at the radio receiver while the COS input is connected to a
coded squelch detector (PL or DPL) to block out all but the desired users on the channel.
This is commonly referred to as “AND Squelch”.
ON activates the receive audio stream at all times, even when there is no receive audio
to send. Note that this setting can interfere with proper operation of console channel
patches. Use this to establish an audio trunk for tone remote control.
VOX enables voice activation of packet streaming for radios that do not provide the far
superior hardware COS logic output to indicate that a signal is being received. When VOX
is selected set the
Vox Threshold
and
Vox Hang Time
fields to non-zero values.
Transmit/Receive Priority
should be set at default of Radio Transmit has Priority unless you
have a special radio network. Normally, incoming RTP packets will key the radio transmitter
regardless of whether the radio receiver is active. The only use case for Radio Receive has
Priority is a simplex multinode radio network where the AudioMates connect all radios
via IP multicast; giving radio receive the priority prevents receivers within range of the
transmitting node from locking up the system in a feedback loop.
COS Polarity
sets the AudioMate 360r unit to begin streaming audio to the IP network when
the COS hardware logic input is held either low (approximately 0 Volts) or high (3-12 Volts).
Consult your radio documentation to determine the proper setting.
Receive De-Emphasis Enable
(default cleared) Checking this box will apply a 6dB per
octave roll-off of high frequencies; this is effectively a low-pass filter using an industry
standard curve in cases where the audio input to the AudioMate 360r is connected to the
discriminator output of an analog FM radio. Clear the check box to allow the receive audio
to pass through the AudioMate 360 with no equalization (flat audio).
Tone Remote Control
Set Receiver to VoIP Mode to
ON to send RTP audio packets
full time to the radio end of
the link.
About VOX
VOX should be used with
caution. VOX can cause
operational problems if not
configured carefully.
The VOX detector listens for
audio above the configured
threshold. ANY sound will
trigger the streaming of
packets.
It is always preferable to use
the hardware COS signal if the
radio provides it.