TDS 420A, TDS 430A & TDS 460A Service Manual
2-1
Installation
This chapter contains information about supplying operating power, the
operating environment, applying and interrupting power, repackaging for
shipment, and installed options.
Supplying Operating Power
STOP. Read all information and heed all warnings in this chapter before
connecting the digitizing oscilloscope to a power source.
WARNING. AC POWER SOURCE AND CONNECTION. The digitizing oscillo-
scope operates from a single-phase power source. It has a three-wire power cord
and a two-pole three-terminal grounding type plug. The voltage to ground
(earth) fr om either pole of the power source must not exceed the 250 V
RMS
maximum rated operating voltage.
Before making connection to the power source, be sure the digitizing oscillo-
scope has a suitable two-pole three-terminal grounding-type plug.
GROUNDING. This instrument is safety Class 1 equipment (IEC designation).
All accessible conductive parts are directly connected through the grounding
conductor of the power cord to the grounded (earthing) contact of the
power plug.
The power input plug must be inserted only in a mating receptacle with a
grounding contact w here earth ground has been verified by a qualified service
person. Do not defeat the grounding connection. Any interruption of the
grounding connection can create an electric shock hazard.
For electric shock protection, the grounding connection must be made before
making connection to the oscilloscope input or output terminals.
A power cord with appropriate plug configuration is supplied with each
digitizing oscilloscope. Table 2--1 gives the color coding of the conductors in the
power cord. If you require a power cord other than the one supplied, refer to
Table 2--2.
Power Cord Information
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