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Chapter 4: Installation
Power Options
62
Teklogix 8570 Vehicle-Mount Computer User Manual
Note: Transient Suppressor
Keep in mind that this transient suppressor is not required on 24-48V
trucks if the Active Filter Power supply (PN 19893-600) is installed.
On 12 V trucks, the Transient Suppressor (PN 19893-500) can be installed
between the vehicle battery and the computer (or between the battery,
pre-regulator and the computer) to reduce high voltage spikes from a
power supply.
Figure 4.11 The Pre-Regulator
Note: When installing the 8570 on vehicles operating on 24 Volts and above, the
diode assembly (supplied with the extension power cable 13985) must be
used to reduce the AC ripple produced by the SCR traction motor control-
ler on the vehicle.
To connect the diode, push the male connector on the diode assembly into
the female connector on the positive (red) lead of the power cable. If the
fuse assembly is already installed, connect the diode assembly to the fuse
assembly as described in the previous sentence. Connect the red wire from
the diode assembly to a fused power source on the vehicle.
It is recommended that all connections be secured with electrical tape or
heat shrink to prevent contaminants from degrading the connection.
Extension Power Cable
PN 13985
Fuse Assembly
DC Output Power Cable
External Power Connector
To 8570 Vehicle-Mount Computer
to vehicle power (positive)
to vehicle power (negative)