General Information; Introduction - Philips PM 3214 Anleitung

9
-- 1. General information
1.1 INTRODUCTION
.~
..,
....
The 25 MHz dual-channel oscilloscope PM 3214 is a compact, portable instrument, ergonomically designed to
facilitate its extensive measuring capabilities.
The instrument provides both a main and a delayed timebase with provision for alternate timebase displays,
comprehensive triggering facilities including peak-to-peak Auto, DC coupling and automatic TV waveform
display.
A large 8 x 10 cm screen with illuminated internal graticule lines makes for easier viewing, and a 10 kV
accelerating potential gives a high intensity trace with awell-defined spot.
A double-insulated power supply allows the frame ground to be directly connected to floating ground circuits
provided that this ground does not carry live potentials. By this means, interference by ground currents, as is
frequently experienced with grounded oscilloscopes, is also substantially reduced.
The wide range of applications enabled by the above features is further extended by a versatile power supply
that enables the instrument to be operated from any line voltage or frequency as well as from d.c. For field
operation an optional battery version is also available.
Warning: The frame ground land the ground lead of the probe) must not be connected to live potentials.
Fig. 1.1. 25 MHz dual-channel oscilloscope PM 3214