MAN# 650528 rev. B
9
Diagnostic Testing
The basic power up and operation can be verified with the display on the SGI-5E. 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 speed signal is present. When the key is first turned on, the display will show the current
CAL value for a few seconds. If both switches are pressed at the same time the current, incoming speed
signal frequency will be displayed. If the frequency displayed has a decimal point, then the reading is kHz,
otherwise the reading is Hz.
Both the input and outputs can be tested with special diagnostic modes.
To test the outputs and speedometer reading while sitting still:
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 th
e SET switch. The display will show “
”.
4.
Press and release the INC switch until “
” is shown.
5.
Press and release the SET switch. The display will show “
” and be supplying a 33Hz signal on
OUT1 and OUT2.
6.
Press and release the INC switch to select “
”, “
”, “
”, or “
”. The output signal will
change immediately.
7. Press and release the SET switch to quit.
To test the input while driving:
1. Begin with the key off.
2.
Press and hold the INC switch while turning the key on. The display will show “
”.
3. Release the SET switch. The displ
ay will show “
”.
4. Anytime either switch is pressed the display will update and hold the frequency. This can be done
while driving at a specific speed (like 30MPH or 60MPH) to determine the type of signal being fed
to the SGI-5 E. This information can be supplied to tech support to assist in setup and
configuration of the unit.
5. The unit will remain in this mode until the key is turned off.