ATI Technologies SmartTachSmartTach, User Manual

Page: 49 / 110

PARAMETERS
SmartTach Operating Manual Page 4-19
25 - Trigger Input Hysterisis Level
Parameter Group:
TrgInp
Range: -5.12 - 5.08 volts (-25.6 - 25.4 volts if Attenuator enabled)
Increment: 0.04 volts (0.2 volts if Attenuator enabled)
Default: 0.20 volts (Attenuator disabled)
Purpose: This parameter is used to set the input hysterisis voltage of the Trigger
input. The actual available range is dependent on the input
Threshold level.
How to Set: Setting this parameter is required only if the Trigger Input Level is set
to allow manual setting of the Hysterisis level. This should only be
done for special circumstances. This parameter may be
automatically set for certain Trigger Input Signal Level options.
If the Trigger Input Level is set for automatic Hysterisis calculation,
and a zero-crossing type input (magnetic sensor) is detected, this
parameter will determine the minimum Hysterisis level which can be
used for automatic control. The default value of 0.20 volts is suitable
for most applications. If necessary, this value should be set slightly
lower than the minimum expected peak sensor voltage under all
operating conditions (most likely at the lowest engine speed).
NOTE: When parameter 20 is set to TS1, this parameter will be set to
Auto and cannot be changed.