Connection To An External Supply; Front Cover And Instrument Positions; Controls And Sockets; Cathode-Ray Tube And Power Controls - Philips PM 3214 Anleitung

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2.1.3
Connection to an external supply
An external supply or battery of 22 V to 27 V capable of delivering at least 1 A can be connected to the
socket on the rear panel.
The inner conductor must be connected to the negative pole and the outer conductor to the positive pole, as
indicated on the rear panel.
The instrument is protected against overloads and reversed polarity by an internal fuse and diode.
2.1.4
Front cover and instrument position
The front cover can be simply removed by pulling it from the front.
The instrument may be used horizontally or in several sloping positions by using the carrying handle as a
tilting bracket.
To unlock the handle, simultaneously push in both pivot centre knobs.
2.2
CONTROLS AND SOCKETS (Refer to Fig. 2.2)
2.2.1 Cathode-ray tube and POWER controls
ILLUM Continuously variable control of the graticule illumination;
POWER ON
incorporates mains (line► switch. POWER ON pilot lamp indicates
the ON state.
INTENS
Continuously variable control of the trace brilliance.
FOCUS
Allows beam to be focused for minimum spot size.
TRACE ROTATION
Screwdriver adjustment to align the trace with the horizontal
graticule lines.
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FOCUS
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Fig. 2.2. Front view of the oscilloscope showing controls and sockets.
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