Field Name
P25 Trunking
System
MSI
Non MSI 1
Non MSI 2
Non MSI 3
Hardware Setup Menu
Field Name
Range
RSSI
2-20dB
OFF
Hysteresis
Speed
1-10ms
Squelch
ON Threshold
4-28dB
OFF
3-25dB
Threshold
Speed
10-150ms
Reptr FM Dev.
Limit
12.5kHz
0.75–2.5kHz
25kHz
1.5 - 5kHz
PL FM
Deviation
0.19-
12.5kHz
0.75kHz
25kHz
0.38-1.5kHz
PL STE Delay
120-250ms
Automatic VR
Enable /
Activation
Disable
(AVRA)
check box
January 2019
DVRS Installation & Programming Guide – PART II
Range
Description
'MSI'_ Default.
The DVR/VRX sends the 'Status'
received from the P25 PSU to the
MSU without any change.
'Non MSI 1' The DVR/VRX adds 1
to 'Status' received from the P25
PSU and forwards the incremented
'Status' to the MSU.
'Non MSI 2' reserved for future use
'Non MSI 3' reserved for future use
Description
Sets the RSSI CAS OFF threshold in
dB below the RSSI CAS ON Threshold
(see Repeater Channel Setup Menu).
Sets the RSSI Averaging Integration
Time.
Sets the Squelch ON and OFF
thresholds.
Squelch Averaging Integration Time.
Typically set to 2.12kHz (12.5kHz
channel spacing) or 4.25kHz (25kHz
channel spacing.
Typically set to 0.38kHz (12.5kHz
channel spacing) or 0.75kHz (25kHz
channel spacing.
PL Squelch Tail Elimination Delay. Must
be set to match the portable setting.
Typical setting is 150ms.
Enables or Disables the Automated VR
Activation (AVRA) Option.
8M083X25 R14
APX Series P25 Interface
Notes
Applicable only to P25
Trunking Channels.
Notes
Typically set to 5dB.
Typically set to 5ms.
Affects Analog Mode only.
Typical recommended settings
are ON: 16dB SINAD
OFF: 10dB SINAD.
Typical setting is 25ms.
Affects Analog Mode only.
Depends on the selected
Channel Spacing – refer to the
Frequency Band Setup menu.
Affects Analog Mode only.
Depends on the selected
Channel Spacing – refer to the
Frequency Band Setup menu.
Affects Analog Mode only.
If this field is programmed too
short the squelch tail will not be
fully eliminated. If it is
programmed too long, the
portable may unmute
unnecessarily.
Page 73 of 153
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