Tektronix 455 User Manual

Instrument Options—455/A2/B2
OPTION 7
Option 7 permits the Tektronix 455 oscilloscope to be powered from a dc source of 12 volts or 24 volts in addition to the
standard ac line operation. For battery operation. Option 7 makes the 455 compatible with the Tektronix 1106 Battery Pack.
Option 7 consists mainly of a dc to ac inverter which is installed as an integral part of the oscilloscope. The modified oscillo
scope has a two-position voltage-selector switch in place of the push-pull power switch on standard oscilloscopes.
A dc input connector is located on the rear panel. The circuitry is protected in the event that 24 volts should be connected
when in the 12 volt mode.
SPECIFICATIONS
AC Requirements
AC requirements are the same as those of oscilloscopes
without Option 7.
12 V —Permits operation from a 12 volt dc source.
24 V —Permits operation of the oscilloscope from either
an external 24 volt power source or from the 1106
Battery Pack, which can be fastened to the bottom of
the oscilloscope.
DC Requirements
11.5 to 14 volts or 22 to 28 volts. Voltage at + or — power
lead with respect to the oscilloscope chassis ground must
not exceed 50 volts.
Temperature
The same operating and non-operating range as instruments
without Option 7.
SAFETY CONSIDERATIONS
Since Option 7 becomes a part of the instrument, safety
considerations for the modified oscilloscope are the same as
those for the standard oscilloscope.
FUNCTIONS OF
CONTROLS AND CONNECTORS
POWER AC-DC Switch (see Fig. 1) —Selects either ac or dc
voltage. With POWER switch pushed in, rotate knob clock
wise for dc or counterclockwise for ac, then pull out to turn
on the oscilloscope.
AC—Applies ac power to the oscilloscope.
DC—Permits 12 or 24 volts dc operation of the oscillo
scope from an external source.
Dc Voltage Selector Switch (see Fig. 2)—Selects either 12
volts or 24 volts operation.
DC INPUT Connector (see Fig. 2)—Rear panel connector
for input of dc power.
PERFORMANCE CHECK
Set the oscilloscope for the power source available as listed
in Table 1.
Connect the oscilloscope to ground (earth) reference. Turn
on the oscilloscope and check that it operates properly on
the available power sources.
Be sure to set the 1106 Line Selector switch to the correct
line voltage when charging the batteries.
REV B AUG 1979
Option 7 Page 1

Tektronix 455 Specifications

General

Brand	Tektronix
Model	455
Category	Test Equipment
Language	English