Tektronix 465B User Manual

Options 465B
Service
Option 07
OPTION 07
EXTERNAL DC OPERATION
INTRODUCTION
Option 07 is a dc-to-ac inverter that permits Tektronix
oscilloscopes to operate on either 12 or 24 volts dc
with no
performance deterioration
Circuitry is provided
to
protect
against damage
due
to connection of 24 volts when in the
12-volt mode of operation. The 24-volt external input
permits use with marine and aircraft conventional dc
power
Option 07 is an integral part of the
oscilloscope. The
modified oscilloscope has
a
three-position voltage input
selection slide
switch (visible through the right side panel)
at the rear
of
the line voltage selector switch A dc-input
connector is located below thefan cover on the rear
panel.
Option 07 is
not
provided with 465B oscilloscopes
equipped with the DM44 Digital Multimeter
SPECIFICATION
Electrical characteristics
and performance re-
quirements listed in the Specification part of this manual
are applicable to the 465B Option 07 oscilloscope with the
following
exceptions or additions:
DC
REQUIREMENTS. Either 1 1 5 to 14 volts or 22 to 28
volts
Operation with 11
5 to 14 volts
will
notallow use of
the graticule lights or Option 05. Operating range
may be
extended
to 15 volts or 30
volts with
a series dropping
resistor Maximum elevation
for
+
or
-
power lead is 50
volts with respect to oscilloscope chassis
or
ground.
CONTROLS AND CONNECTORS
Mode Switch
Three-position switch located
adjacent to the Line Voltage
Selector switch
on
the right
side
panel and
used to select the
proper i nput power to the 465B
AC Permits application of
ac
power
to the oscilloscope power
switch
DC 12 Permits 12-volt
operation of the
instrument from an external
12-
volt source.
DC 24 Permits 24-volt operation of the
instrument from either an exter-
nal 24-volt power source or
from the 1106 Battery Pack,
which may
be
mechanically
at-
tached to the
oscilloscope.
DC Input Connector
Used
for connecting external dc
power source to the 465B
Op-
tion
07;
located on rear panel.
OPERATION
AND INSPECTION
To operate the 465B
Option 07 oscilloscope:
Connect the
oscilloscope frame to a ground
(earth)
reference before using.
1.
Set the 465 B Line Selector
switch and theOption 07
Mode
switch
to
the appropriate
positions for the power
source to be used. Refer to
the following table for
proper
switch positions.
Power Source
465B Une
Selector
Switch
Option 07
Mode Switch
115 V ac 115
AC
230 V
ac
230
AC
12 V dc
—
DC 12
24 V dc
—
DC 24
Tektronix 1106
—
DC 24
2.
The 465B Option 07
oscilloscope may now be
operated
using the
information, instructions, and
procedures contained in
preceding
sections
of this
manual with the
exception of DM44
digital multimeter
operation.
THEORY OF
OPERATION
Option 07
is
a dc-to-ac
inverter operating on 12
or 24
volts dc.
The operating
frequency of the inverter is
approximately 400
Hz The following circuit
description is
for 24-volt
operation unless noted
otherwise. Refer to the
schematic diagrams (Figures 6-9
and 6-10) throughout the
detailed circuit
description.
623

Tektronix 465B Specifications

General

Brand	Tektronix
Model	465B
Category	Test Equipment
Language	English