Service manual

MAN 650314:D
18
Press and hold SW1 while turning the key on. Release the switch. Press and release
SW1 to get to the “TACH” setup menu. Press and hold the switch until “TACH ENGINE” is
displayed to enter the tach setup menus, then release SW1.
Now you can press and release the switch to scroll through the tach sub-menus, “ENGINE”
“UPDATE” “WARN” “SIGNAL” “DONE”. When you get to the desired sub-menu, press and hold the
switch to select it.
Engine cylinder setup (ENGINE)
This menu is used to set the cylinder count of the tach signal. It is adjustable from 1 -16
cylinders.
When “setup engine” is displayed, press and hold SW1 until the message screen
changes.
Release SW1 and the current cylinder setting will be displayed.
Press and release SW1 to increase the value from “ 1” – “ 16” or “BUS”.
When the desired setting is displayed, press and hold SW1 until “DONE” is displayed.
Release the switch to go onto the next sub-menu item.
*NOTE: When selecting the cylinder count, be aware of tach signals coming from ECMs,
oftentimes a V-8 engine computer may actually output a 4 cylinder tach signal. This would
require the ENGINE
ENGINEENGINE
ENGINE selection to be set for “ 4
44
4 ” not “ 8
88
8 ” as you might expect.
Display update setup (UPDATE)
The display update rate can be adjusted so the reading on the tachometer doesn’t change
so quickly. This is a personal preference and is used to “slow” the reading by averaging. The
value can be changed from slow, mid, or fast.
When “UPDATE” is displayed, press and hold SW1 to enter the “
““
“UPDATE”
” ”
” setup menu.
Release SW1 and the current update rate will be displayed.
Press and release SW1 to increase the value from “SLOW” “MID” or “FAST”.
When the desired setting is displayed press and hold SW1 until “DONE” is displayed.
Release the switch to go on to the next sub-menu item.
RPM warning setup (WARN)
This is used for the turn on point for the WARN output on the control box. When the RPM
reading is above this setting, the output will activate, providing a ground signal. It can be used to
turn on a shift light or other RPM based devices. The value is adjustable from 2,200 RPM –
14,800 RPM in 100 RPM increments.
When “WARN” is displayed, press and hold SW1 to enter the “
““
“WARN”
””
” setup menu.
Release SW1 and the current warning point will be displayed.
Press and release SW1 to increase the value from “2200” – “14800”..
When the desired setting is displayed press and hold SW1 until “DONE” is displayed.
Release the switch to go onto the next sub-menu item.
Tach signal setup (SIGNAL)
This menu will allow you to select from two different tach-input types. A low voltage, “5V
LO”, tach signal or a high voltage tach signal, “12V HIgh”. A low voltage signal is usually one
picked up from the ECM. Low voltage may also be considered a 0-5V square wave. If you are
getting the tach signal from the ignition coil or points, set this for the high voltage signal “12V
HIgh”. To pick up a tach signal from a traditional ignition coil, connect a signal wire to the
negative side of the coil.