Squelch And Signalling Thresholds Tab - Tait TM8100 User Manual

Squelch and Signalling Thresholds tab

Squelch Detect
Sets the squelch mute opening points of country, city, and hard when the
Type: Noise Level
squelch detect type
to 20 dB SINAD for specific system requirements.
The default values for each are:
Note
Opening Pt for
Sets the squelch mute opening points of country, city, and hard when the
Squelch Detect
squelch detect type
Type: Signal
Strength -30 to -119 dBm for specific system requirements.
The default values for each are:
Hysteresis for
Sets the hysteresis of country, city, and hard when the
Squelch Detect
set to signal strength. The hysteresis determines how much lower than the
Type: Signal
Strength opening point the mute closing point will be.
The default values for each are:
Each value can be changed from 2 to 20dB for specific system requirements.
However, as a guideline use a higher hysteresis value for lower opening
points, and a lower hystersis value for higher opening points.
Opening Pt and
Determines the threshold and hysteresis for the radio's various
Hysteresis for
modems. The In-band Signalling Modem includes Selcall, Two-tone, and
Signalling Modems
Single In-band tone signalling. The hysteresis determines how much lower
than the opening point the mute closing point will be.
The default value for each opening point is -119dBm, and can be changed
from -30 to -119dBm for specific system requirements.
The default value for hysteresis is 10dB, and can be changed from 2 to 20dB
for specific system requirements.
16 Changing maximum deviation and squelch thresholds TM8100 Mobile Radio Calibration Application
User's Manual
is set to noise level. Each value can be changed from 8
Country: 8 dB SINAD.
City: 12 dB SINAD.
Hard: 20 dB SINAD
The hysteresis when the squelch detect type is set to noise level is
fixed at a preset level, approximately 2dB RF.
is set to signal strength. Each value can be changed from
Country: -115dBm
City: -113dBm
Hard: -107dBm
Country: 9dB
City: 8dB
Hard: 4dB
squelch detect type
signalling
August 2004 © Tait Electronics Limited
is