Type 422 AC-DC
SECTION 2
OPERATING INSTRUCTIONS
Change information, if any, affecting this section will be found at the rear of this manual.
General
To effectively use the Type 422, the operation and capa
bilities of the instrument must be known. This section des
cribes the operation of the front-panel controls, gives first
time and general operating information and lists some basic
applications for this instrument.
Front Cover
The front cover furnished with the Type 422 provides a
dust-tight seal around the front panel. Use the cover to
protect the front panel when storing or transporting this
instrument. The cover also provides storage for the power
cord, probes and other accessories (see Fig. 2-1).
Fig. 2-1. Accessory storage provided in front cover.
OPERATING VOLTAGE
General
The Type 422 Oscilloscope with AC-DC Power Supply
features a detachable power supply section which can be
removed for convenience of operation or maintenance. A
rechargeable battery pack is also available for use with the
AC-DC Power Supply to make this instrument completely
portable. The following information provides removal in
structions, battery pack installation and information neces
sary for operation in each power mode as well as informa
tion on rechargeable nickel-cadmium batteries.
Removing the Power Supply
The power supply can be removed from the indicator for
maintenance, calibration, remote operation, installation of
batteries, or to gain access to the interior of the indicator.
Loosen the four securing screws located in the rear feet of
the power supply (see Fig. 2-2) and then separate the two
units by sliding the power supply to the rear, off the sup
port rods. To re-attach the power supply to the indicator,
reverse the above procedure.
Fig. 2-2. Location of screws on rear of power supply which attach
power supply to indicator.
Power Selection
The Type 422 with AC-DC Power Supply can be oper
ated from either a 115-volt or 230-volt (nominal) AC line
voltage source, from an 11.5 to 35 volt external DC source,
or from internal batteries (battery pack must be purchased
separately). The power supply also contains a battery charg
er circuit to recharge the internal batteries when operated
from an AC line voltage source. The Power Mode switch on
the rear panel of the power supply selects the operating
0
2-1
To Next Page
Loading...
