Haltech IQ3 Data Logger Dash - Manual (Page 19)

IQ3 Data Logger Dash Installation Manual
19
Power Supply and Grounding
The IQ3 should be connected to a battery source that can supply a constant 10-16 volts. In
vehicles that utilize a master power switch, it recommended to connect to the master power
switch. This not only insures the IQ3 will be powered when the vehicle is in use, it also insures
power will be disconnected in the event of an emergency.
A good ground is very important to the function of the IQ3. Insure there is no type of paint, rust
or any other type of material that could prevent proper grounding. Boats often present unique
grounding problems. If necessary, provide an isolated power and ground as faulty grounds will
create corrupt data.
Warning: Do not attempt to connect or disconnect any IQ3 item, with the power
switched on. This action could result in damage to the IQ3.
Engine RPM Signal
Requirements: 5-18V, 50% duty cycle, square wave output. This signal is typically obtained from
the tach signal output of an aftermarket ignition box. Racepak also offers a GMR Inductive RPM
Pickup (Racepak PN: 680-SN-GMR) which is attached to the +12V coil power on coilpak or coil
on plug ignition systems. For early model points/distributor ignition systems, MSD offers a tach
signal generator, PN 8913 that can be spliced into the 12V power to the coil.
Warning: Do not connect the tach input wire directly to any part of the ignition coil.
Doing so will result in damage to the logger.
MicroSD Memory Card
The IQ3 is equipped with a 512MB microSD memory card. This card is located in the face of the
IQ3, between the shift lights. The card may be removed by simply pressing on the card, which
will slightly eject the card from the dash face. When inserting the card, insure it firmly “clicks”
into place. The edge of the card should slightly protrude from the dash face, when seated. A
larger memory card, up to 2GB, may be utilized.