8A083X30 Rev.11
APX Series P25 Interface
DVRS
User’s Guide
January 2019
Page 42 of 94
DVRS Modes of Operation
When a “DVRS Enabled” TG / Channel is selected on the APX MSU control head, the
DVR can be switched to one of the following modes
– OFF, LOCAL or SYSTEM.
OFF Mode
ACTIVITY
OFF MODE ACTION
Control Head Display
VR OFF <DVR CH Name>
DVRS Button Press
Short high-pitched tone.
DVR Control Mode is accessible.
MSU Receiving from System
DVR does not repeat audio received by
MSU.
MSU Speaker Audio present.
MSU User PTTs the MSU
Microphone
MSU Keys up. DVR does not key up.
PSU Activity on DVR channel
DVRS Transmit Function Disabled i.e.
No DVR repeat. No Speaker Audio.
Table 11 OFF Mode DVRS Basic Operation
SYSTEM Mode
ACTIVITY
SYSTEM MODE ACTION
Control Head Display
VR SYS <DVR CH Name>
DVRS Active Tones
If programmed, a short high-
pitched ‘DVR
Enabled’ tone is repeated every few
seconds (5-255 sec. programmable) in the
MSU Speaker regardless of the Primary /
Secondary Status of the DVR.
DVRS Button Press
Short high-pitched tone.
DVR Control Mode is accessible.
MSU User PTTs the MSU
Microphone
Both DVR and MSU key up.
DVR may be programmed not to key up!
MSU Receiving from System
DVR repeats audio received by MSU to
PSU Users on the designated DVR
Channel. Speaker Audio is present.
PSU Activity on DVR channel
PSU audio is repeated locally by DVRS as
well as by the MSU to the System. MSU
Speaker Audio is present if In-Car Monitor
is enabled in the MSU.
Table 12 SYSTEM Mode DVRS Basic Operation
