Z2 Controller Operations Manual
Z2C Installation and Operation Manual
5-16
Interoperability Now
Figure 5-13: USB Headset Settings
VOX uses the level of audio present in the microphone to determine when COR is active. Note
that VOX is required if the headset has an in-line PTT button. Generally, when PTT is selected
instead, the VOX Threshold and Hangtime settings don’t come into play. PTT may be useful in
noisy environments where the background noise might cause errant transmit sequences. PTT
mode requires that the user Click and Hold the
PTT
button on the headset icon in the Z2C’s GUI
during TX.
Select
Duplex
: either Full or Half. Note that other resources in a net may not be capable of full-
duplex communications. If such is the case, communications will be limited to half-duplex.
The proper
VOX Threshold
depends on the microphone’s audio level. More sensitive will pick
up lower level audio while less sensitive will require louder audio before triggering VOX. Adjust
Microphone Gain
first, as it affects where the threshold should be set.
VOX Hangtime
holds the VOX indication active between syllables or during pauses in speech. It
should be set no lower than around 350ms.
Set the
Microphone Gain
and
Earphone Gain
to proper levels. Proper level may be determined
by cross-connecting the headset to a system resource and ensuring that the volume level output
of that resource is comparable to any other device it communicates with. The
Earphone Gain
setting should be set to a level comfortable to the headset user.
5.3.2
Audio Priority
Remember that, if active COR is detected for a member of an interoperability net, that channel’s
audio is retransmitted by all other channels that are members of that net. Typically, only one
member of a net can be allowed to have active COR at any time. The
Audio Priority
Settings
allows audio from more important channels to have or take precedence.
If priority is identical for all channels in an interoperability net, the first to exhibit an active COR
condition will be heard by all other connected channels, and those others can’t cut in before the
initial channel goes inactive.