DIGITAL DELAY Mega 300 Руководство по эксплуатации - Страница 12
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Печатать страницуSelectable Function Output (S.F.O.)
The Selectable Function Output is a single output that can be programmed to function in four separate ways. Each of
the separate functions is listed below with an explanation of the setting basic function. Once the basic understanding of the
settings is understood, additional uses may be thought of by the driver.
1) When the S.F.O. is set to a one, the S.F.O. Functions as a Starting Line Enhancer (S.L.E.). This
means a Throttle Stop connected to the S.F.O. will control the starting line RPM.
2) When the S.F.O. is set to a two, the S.F.O. Functions as a second Four Stage Timer. This means
that a Throttle Stop with dual solenoids, can have a separate Four Stage Timer driving each
solenoid. Another function would be to control a stage of NOS.
3) When the S.F.O. is set to a three, the S.F.O. Functions as a Line Lock Control. This means that
the Line Lock solenoids will engage when either the push-button connected to the Line Lock
terminal is pressed (burn out) or when the Transbrake is engaged (starting line).
4) When the S.F.O. is set to a four the S.F.O. functions as a second Transbrake output. This means
that if the main Transbrake output has been damaged in some way, the S.F.O. can be used as a
spare until the box can be shipped back for repairs.
5). When the SFO is set to a five the output is turn off.
To disable the safety circuit that is designed in the unit, when power is first applied, or after you have taken
the SFO out of mode 3 or 4 a delay cycle must be run, by engaging and releasing either pushbutton 1 or 2.
When SFO is in mode 3 or 4 a safety circuit is enabled to prevent false engagements.
The push-button connected to Line Lock terminal is mainly used to engage the Line Lock solenoids that are
connected to the S.F.O. terminal. This is typically done for a burn out when the Transbrake solenoid should not be engaged.
Only the Mega 400 has a second use for the Line Lock push-button, which is to arm the Replay Tach for recording a pass.
If the S.F.O. terminal is not to be used as Line Lock control, it is not necessary to connect either the Line Lock push-
button or the Line Lock solenoids to the unit. However for the Mega 400 a Line Lock push-button is required to arm the
Replay Tach for recording a pass. If the vehicle has Line Lock solenoids, the Line Lock push-button and the Line Lock
solenoids can both be connected to the Line Lock terminal. This will automatically arm the Replay Tach recording feature,
when a burn out is done using the Line Locks and eliminate the need for a separate record push-button.
Understanding and Connecting a By-pass
push-button or Two or More Output Together
A by-pass push-button is used to engage the Transbrake solenoid without starting a timing cycle. This can be helpful
if the vehicle needs the Transbrake engaged to back up. If a by-pass push-button is desired, connect one side of a push-button
to the Transbrake terminal and the other side of the push-button to +12 Volts.
Applying 12 Volts to any of the outputs will not damage the unit. Connecting one or more outputs together will also
not damage the unit. An example of this would be connecting the S.F.O. and the Throttle Stop terminals together. This would
be done if the same Throttle Stop was to used as a S.L.E. Stop and a down track Stop.
Connecting or shorting any output terminal directly to ground will cause damage to the unit. This damage will
not be covered by the warranty. It is strongly recommended that a 15 Amp fuse is put in each of the wires coming from
the output terminals.
Understanding
Line Lock push-button
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