Floscan TwinScan Tachometer - Manual (Page 3)

5/20/1999 1000-206-00
OPERATION
TwinScan 3” Tachometer (LCD)
To ensure years of trouble free operation of your new TwinScan instrument,
please read all of these instructions carefully before beginning your installation.
1. Mounting Location
TwinScan instruments allow you to quickly monitor and compare port and starboard engine performance. The front faces of
® all TwinScan instruments are water-resistant and include a gasket to seal the instrument to the panel. Please note that TwinScan
instruments contain magnets that may affect your compass. Use care in choosing a mounting location.
2. Start-up Sequence and Normal Operation
The TwinScan tachometer performs a quick self-test each time it is powered up. The self-test verifies adequate power, good ground
connections, that the pointers are free, and the LCD display is working properly. During this test, the pointers will sweep smoothly
from zero to full scale and then back to zero. The LCD shows a series of numbers as detailed below (example values are used, so
actual numbers may differ). Switches and configurations are shown on the LCD as: “0123456789AbCdEF”
“8.8.8.8” Checks LCD segments and backlighting.
“ 1.2 0” Software version number.
“F 3” The red (left) and black (right) knob settings (on back of instrument).
“- - 3 4” Internal configuration (scale range, units, etc.)
“ ” Blank
“ 4.0” Cycles per revolution as set by the red and black knobs (refer to calibration sheet—Table 1).
“ ” Blank
After the self-test, the instrument goes into its normal operating mode. The needles indicate engine rpm and the LCD displays a
synch indicator or nautical miles per gallon/liters per nautical mile depending on the “synch / MPG” (“synch / L/NM”) select switch.
3. LCD Synchronizer Indicator
In engine-synch mode, the LCD is programmed to display a bar-graph indicator. A series of vertical bars will appear on the side of
the faster running engine. The number of bars displayed depends on how far the engines are out of synch and the synch resolution
setting on the back of the instrument (see calibration sheet for details). When the engines are synchronized an “IN SYNCH BAR”
appears in the center of the display. When one of the engines is not running, two small rectangles will appear in the corner of the
LCD display. For example, if the starboard engine is at idle and the port engine is not running the two small rectangles will appear in
the bottom left side of the display. Please refer to the diagram below for examples of sync displays.
Port engine running Starboard engine running In Synch
faster faster
FIG. 1 SYNCH DISPLAY
FloScan Instrument Company, Inc. Tel: (206) 524-6625 Fax: (206) 523-4961
3016 NE Blakeley Street, Seattle, WA 98105 Email: [email protected] Http://www.floscan.com