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This unit can provide a tachometer signal to drive a standard ignition system
tachometer. The input signal can be from a tachometer output from the alternator, from a gear
tooth sensor reading the flywheel teeth, or from an engine timing gear sensor. In addition to
the setup mode calibration using gear tooth count, fine adjustment can be done during normal
operation to fine tune the gauge needle position if needed. The + and – buttons allow fine
adjustment to be performed with the engine running.
Here is a general overview of the DSL-1's control functions.
Each of the different applications below will be described in detail starting on page 2 in
this manual.
Setup
Set input mode: Select the input mode depending on your application.
alt:
alternator 'W' terminal tach signal
fLy:
flywheel gear tooth sensor signal
tgr:
timing gear tooth sensor signal
1. Begin with the key off.
2. Press and hold the SET switch while turning the key on. The display will show the current
version code.
3. Release the SET switch. The display will show "SEt".
4. Press and release the SET switch. The current input mode will be shown, ALt, fLy, or tgr.
Press and release the INC switch to change the input mode. Press and release the SET
switch to save it.
5. The CAL value will be set next. See the detailed instructions listed later in the manual for
your specific application.
Set output mode: Select the output gauge cylinder count. 4, 6, or 8
1. Begin with the key off.
2. Press and hold the SET switch while turning the key on. The display will show the current
version code.
3. Release the SET switch. The display will show "SEt".
4. Press and release the INC switch until "OUt" is displayed.
5. Press and release the SET switch. The current cylinder count will be shown, 4, 6, or 8. A
2000 rpm output signal will be generated reflecting the current cylinder count for gauge
testing.
6. Press and release the INC switch to change it; press and release the SET switch to save it.
DSL-1 E
DIESEL TACH INTERFACE UNIT
1
MAN# 650530:A
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Summary of Contents for Dakota Digital DSL-1 E
- Page 1 DSL-1 E DIESEL TACH INTERFACE UNIT This unit can provide a tachometer signal to drive a standard ignition system tachometer. The input signal can be from a tachometer output from the alternator, from a gear tooth sensor reading the flywheel teeth, or from an engine timing gear sensor. In addition to the setup mode calibration using gear tooth count, fine adjustment can be done during normal operation to fine tune the gauge needle position if needed.
- Page 2 Calibration should be done using a light tach or another known reference for engine speed. The DSL-1 E has an adjustable range of 4.00 to 0.250. Calibration can be set using the setup mode and display or adjusted in real time while the engine is running. Wiring instructions are provided below.
- Page 3 The GROUND terminal on the DSL-1 E should be connected to a good ground. The SIGNAL IN terminal will connect to one terminal from the sensor and the SENSOR GND terminal will connect to the other. Connect the POWER terminal to 12V accessory power.
- Page 4 Consult a vehicle service manual to determine the sensor color code and connection. The GROUND terminal on the DSL-1 E should be connected to a good ground. The SIGNAL IN terminal will connect to the timing gear sensor signal. Connect the POWER terminal to 12V accessory power. NORMAL terminal will provide the standard signal to the tachometer.
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Page 5: Diagnostic Testing
Diagnostic Testing The basic power up and operation can be verified with the display on the DSL-1E. The dot in the upper left corner will be on steady when the unit is powered up and not getting a speed signal. The dot will be flashing when a tach signal is present. -
Page 6: Troubleshooting Guide
This Warranty is in lieu of all other expressed warranties or liabilities. Any implied warranties, including any implied warranty of merchantability, shall be limited to the duration of this written warranty. No person or representative is authorized to assume, for Dakota Digital, any liability other than expressed herein in connection with the sale of this product.