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Virtual tach
Virtual Tach is a new feature for Directed this year. It is the default
RPM-sensing method for new remote start systems. Virtual Tach gives
the installer the performance of a hardwired tach wire, with the conve-
nience 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 micropro-
cessor “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.
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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.