Name and Functions of Each Part
13
IM 767361-01E
Power Supply and Power Switch
This instrument can be operated from three different kinds of power supply,
commercial power, DC power (10 to 15 VDC), and battery pack (optional).
To operate the instrument using commercial power, turn ON both the MAIN
POEWR switch (rear panel) and POWER switch (front panel). In most cases,
you should always leave the MAIN POWER switch ON, and turn the power ON
or OFF using the POWER switch only.
To operate the instrument using DC power, turn the power ON or OFF using the
POWER switch only. It does not matter whether the MAIN POWER switch is
ON or OFF.
When operating the instrument using the battery pack, turn the power ON or
OFF using the POWER switch only.
If commercial power is supplied to the instrument and the MAIN POWER switch
is ON, the batteries will be trickle-charged. In trickle-charging, the batteries are
charged until natural discharge has been compensated for. Thus, to charge
the batteries completely, follow the operations on page 39, “Charging the Ni-Cd
Batteries.”
Switching
power
supply
Battery
pack
Fuse
Battery charge/
discharge
control circuit
MAIN POWER switch
100 to 120 VAC
200 to 240 VAC
12 VCD
Power Supply
DC/DC
Converter
POWER switch
Name and Functions of Each Part