Channel Enable; Channel Calibration - Edelbrock QwikData 91001 Manual

Lap Beacon Example
A lap beacon is an example of a digital input that is configured as a counter. Another example may be an Integrating Flowmeter where
each revolution of the turbine in the flowmeter produces a pulse and each pulse corresponds to a set amount of fuel. So by counting
pulses, you may determine the absolute amount of fuel that has passed. (Note: In most cases for racing applications, we are
interested in the fueling rate (gpm) and thus read flowmeters as microseconds QwikData can measure frequencies of up to 6000 Hz,
but the minimum rises to 202 Hz.

Channel Enable

For each channel that you intend
to use, click the "Channel" Box to
enable that channel. Until the
channel is enabled, no additional
information can be entered for
that channel. Channels 9 and 10
are the built-in accelerometers.
These two channels are always enabled as accelerometers unless the Accelerometer Enable boxes on the right side of the form are
de-selected and two jumpers are changed as shown on the jumper table .
Channel Name and Units
Enter a descriptive name for each channel (this will appear on your graphs) e.g. Oil Pressure and an abbreviation for the engineering
units of the variable e.g. "psi". These are the units that will appear on your graph.

Channel Calibration

Analog channels have a six (6), element table that allows you to calibrate your sensor to provide the right EGT, oil pressure etc., read
out. Having 6 elements allows you to calibrate some non-linear sensors (e.g. NGK wide range oxygen sensor), but for most applications
(linear sensors), you will only need to utilize the left two elements. The lower numbers in gray are the raw voltage inputs, the numbers
in white are the corresponding display numbers you are interested in.
Fuel Pressure Example
Before entering in the
calibration constants for an
analog input you must find
out the calibration of the
sensor. The pressure sensors that are sold with QwikData have a 1 to 5 volt linear output over the chosen pressure range of the sensor.
The default for Channel 11 is a 0 to 100-psi sensor. The calibration is thus (1)(0) (1-volt equals 0 psi) and (5)(100) (5 volts equals 100
psi). The third element is (0), (0) which indicates to QwikData that this is the end of the calibration table data.
EGT Example
The EGT converters supplied with QwikData have an output of 0-10 volts over a temperature range of 32° to 1809°. F (0-987°. C).
The calibration is thus (0)(32) (0 volts equals 32°. F) and (10)(1809) (10 volts equals 1809°. F). The third element is (0), (0) which
indicates to QwikData that this is the end of the calibration table data.
Catalog #91001, 91003, 91004, 91005, 91007, 91009
Rev. 9/06 - RS/mc Page 17 of 47
©2006 Edelbrock Corporation
Brochure #63-0282