43B
Service Manual
3-8
OR
Extern StartUp
Software
Operational
Mode
Operational &
Charge Mode
Charge Mode
MAINVAL=L & (TURN OFF or BATTVOLT<4V)
TURN ON & MAINVAL=H
TURN ON & BATTVOLT > 4 & MAINVAL=L TURN OFF&MAINVAL=H
MAINVAL=H
BATTVOLT < 4V
or
AutoShutDown
or
TURN OFF
TURN OFF
MAINVAL=L
Off mode
Mask StartUp
Mask Active
mode
Flash ROM OK
Flash ROM
NOT OK
TURN OFF
Idle mode
VGARVAL=L
VGARVAL=H
TURN ON or
MAINVAL=H
MAINVAL=L TURN ON
Battery refresh
& TURN ON&
Figure 3-2. Fluke 43B Start-up Sequence, Operating Modes
Table 3-2 shows an overview of the test tool operating modes.
Table 3-2. Fluke 43B Operating Modes
Mode Conditions Remark
Idle mode No power adapter and no battery no activity
Off mode No power adapter connected, battery
installed, test tool off
P-ASIC & D-ASIC powered
(VBAT & +3V3GAR).
Mask active mode No valid instrument software, or ^ and > key
pressed when turning on
Mask software runs
Charge mode Power adapter connected and test tool off Batteries will be charged
Operational &
Charge mode
Power adapter connected and test tool on Test tool operational, and
batteries will be charged
Operational mode No power adapter connected, battery
installed, and test tool on
Test tool operational, powered
by batteries