Dedicated Micros TransVu Operation Manual page 47

P P o o w w e e r r M M a a n n a a g g e e m m e e n n t t
The TransVu supports power management capabilities, this menu allows the power management settings to
be configured. Auto power management stops the unit recording and closes down operation 15 minutes (or a
user defined time) after the vehicle ignition is turned off. TransVu will also carry out a controlled and timed
power down sequence when the vehicle voltage has fallen below a user set level, this ensure the battery is
not drained.
Ignition key
+
Vehicle
Power
Supply
An additional cable from the "Ignition On" connection on the vehicle is taken to the TransVu alarm input 5,
which is Pin 11 on the multipole connector.
Managed Power Shutdown
There are three conditions when power management can shut the machine down:
1.Power down after an interval (user set timeout in seconds) from when ignition has
been turned off.
2. Power down after an interval (user set timeout in seconds) from when voltage drops
below the (user set voltage) nominal supply level.
3. Power down immediately when the input voltage falls below the (user set voltage)
minimum operating supply.
Managed Power Up
When power management has been enabled the unit will only power up when the following conditions have
been met:
The power to the unit exceeds the (user set) minimum operating supply voltage.
The ignition sense line receives a positive voltage above 7.5 volts.
46
TransVu
Power in
38
Power on
relay
11
Gnd
20
-
Power out
to camera
32
Dedicated Micros © 2006