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© 2008 Directed Electronics. All rights reserved.
Installation points to remember
This product is designed for fuel-injected, automatic transmission vehicles only.
Installing it in a standard transmission vehicle is dangerous and is contrary to
its intended use.
➤
Virtual tach
Virtual Tach is a new feature for Directed this year. It is the default RPM-sensing
method for the new Responder LE hybrid keyless entry /remote start systems.
Virtual Tach gives the installer the performance of a hard wired tach wire, with
the convenience of voltage sensing. It is far superior to any voltage-sense feature
you’ve tried before.
Virtual Tach monitors the cranking voltage of the vehicle using a very fast micro
controller and an analog-to-digital converter. The microprocessor “saves” the
base voltage as a reference. When Virtual Tach “sees” the slightest uptick in
voltage, indicating that the alternator is charging the battery, the starter motor
shuts off instantly.
➤
D2D
The system has the ability to interface with an XK module through the D2D port.
The advantage to using a D2D interface is that there is less wiring involved in
the installation. Check the XK module installation guide to determine which wires
are not needed, and which options are available.
Summary of Contents for 5303
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