J.P. Instruments Fuel Scan 450M Pilots Guide - Manual (Page 6)

Page 4 FS-450M Fuel Scan
Section 3 - Modes and Alarms
Modes
There are two standard operating modes of the FS-450M:
Automatic Indexing, and Manual Indexing. Most of the time you
will operate the FS-450M in the Automatic indexing mode. When
you first turn on the power the FS-450M starts in the Manual
indexing mode, but will enter the Automatic indexing mode after a
minute. Tapping the AUTO button will begin the Automatic
Indexing Mode.
Alarms
The FS-450M has programmable alarms. When the remaining
amount of fuel falls below the alarm limit the lower display will
show the amount of fuel REMaining and REM will flash on the
lower right display.
When the remaining time falls below the alarm limit the lower
display will show the MINutes of fuel remaining and HR
MN
will
flash on the lower right display.
When an alarm is displayed, tapping the STEP button will
temporarily disable the alarm indication for the next ten minutes.
When an alarm is displayed, holding the STEP button until the
word appears will disable that alarm indication for the
remainder of the flight.
Section 4 - Operation
Diagnostic Testing on Startup and During Flight
When your FS-450M is first turned on, all digits light up in each
display for a short time, permitting you to check for non-functional
segments. Then the FS-450M tests internal components, and
integrity of the system.