Controls And Connectors - Hitachi V-209 Operation Manual

V-2 09
Grounded line
Other in�trument
DANGEROUS
<
Do not apply rever e polarities to EXT
*
Do not mcreasc the bnghtness too much. Your eyes rna) be
•
steamed and the nuorescent surface of CRT may be burnt.
• Do not apply an excel;sive voltage.
The maximum volt3ge of each input is as follows.
PUT direct 250V (DC+ peak AC 3t I kilt.)
is
When xI 0 Probe used
E T TRIG INPUT
EXT BLA Kl G
6
Common external
DC power source
CONNECT>
DC IN.
kilt.)
250V (DC+peak AC at I
250V (DC+peak AC)
(DC
SOV +peak AC)
4.

CONTROLS AND CONNECTORS

CRT
(I) Power supply and
Operating voltage and fuse
Thts
model can be operated from e11her 3 100 volts or a
:!00 volts nominal line vohage source. The line voltage
select switch on the rear panel, turn the instrument from
one operating range to the other. In addition, this switch
changes the primary connections of the transformer to
selection
allow of one of two regulating ranges. Use the
following procedure to convert this instrument between
normal line voltage or regulating ranges
a. Disconnect the instrument from the power source.
b. To convert from I 00 volts nominal to :!00 volts nomi­
nal line voltage or vice versa, remove the protector of
the line voltage select switch.
Change the line voltage select switch from I 00 volts to
200 volts and remounting the protector.
c. Before apply the power to the mstrument, check that
the indicating tabs on the rear panel.
Selection of power supply mode
This oscilloscope
can make
AC power supply, external DC power supply and A[}209bat­
tery pack.
operation
by using three kinds of