6.1
Con
fi
gura
Ɵ
on group
PTT from I/O:
Line
PTT from RTP:
VoIP
Line:
Uses the 600
Ω
line interface as the audio source.
Mic:
Uses the microphone input as the audio source.
Modgen:
Uses the internal modgen as audio input source – see also Modgen frequency.
VoIP:
Uses the IP interface as the audio source.
•
Mic sensi vity
– Range:
-40 to 0 dB in 1 dB steps
– Default:
-21 dB
– Details:
Set the VOGAD sensi vity for the microphone connected to the front panel connector. Use
this se ng to increase or decrease the gain if needed. Se ng depends on microphone used.
•
Mic Bias
– Range:
On | O
ff
– Default:
On
– Details:
Enabled or disables microphone bias on the microphone connector (pin 1). When set to
On, there will be a 8 V bias available on the microphone input pin. Used for electret microphones
that requires a bias voltage.
•
Headset / Speaker Mic
– Range:
Headset | Speaker Mic
– Default:
Speaker Mic
– Details:
This se ng selects the use of an external speaker mic, like the Jotron 81339, or a headset.
Normally a headset has much higher sensi vity than the speaker mic, and this se ng adjusts the
output power level of the
Mic/headset
connector on the front panel. Always select
Headset
if a
headset is used. If le in
Speaker Mic
mode, the power output will be much higher and the audio
volume in the headset may be too loud. Listening at high volume levels for long periods may lead
to temporary or even permanent hearing impairment.
•
Line sensi vity
– Range:
-40 to 10 dBm in 1 dB steps
– Default:
-22 dBm
– Details:
Set the VOGAD sensi vity of the 600
Ω
line input. This se ng determines where the
VOGAD (automa c gain control) start to operate. Thus, if it is set to -22 dBm, levels above -22
dBm will be modulated with 85% (default se ng). For levels below -22 dBm the modula on will
decrease linearly.
•
Monitor output
– Range:
Headphone, Monitor line, VoIP (Availability of certain choices depends on op ons enabled)
– Default:
Headphone, Monitor line
Doc. No.: 103614 TR-910 Operator Rev. AB
jotron.com
47