Model 4342A
Section I
Paragraphs l-1 and 1-2
SECTION I
GENERAL INFORMATION
l-l. INTRODUCTION.
1-2.
The HP Model 4342A Q Meter is designed
to meet the requirements for making easy and
accurate quality factor measurements in the
laboratory, on the production line, or in QA
incoming inspection areas. The direct read-
ing,expanded scale of the 4342.4 permits meas-
urement of Q from 5 to 1000 and the reading
of very small changes in Q resulting from
variation in test parameters. The long fre-
quency dial scale and the pushbutton range
selector continuously cover the frequency
range of 22kHz to 7OPlHz (in seven - l/3 de-
cade steps) and permit setting the frequency
to an accuracy of 1.5% with 1% resolution.
The calibrated long-scale capacitance dials
permit reading the capacitance of the
tuning capacitor at an accuracy of 1% and
provides the capability for varying the
capacitance with O.lpF resolution on the
vernier scale. Inductance of sample can be
read directly from the inductance scale ad-
specific frequencies by setting the frequency
dial to the "L" point on each frequency range.
Flat oscillator output, automatically level-
controlled over the entire frequency ranges,
is a feature of the 4342A.
This advantage
obviates the necessity for frequent oscil-
lator level adjustments to maintain the out-
put level constant or the use of a
specially
matched fragile thermocouple level meter.
The high reliability of the instrument and
ease of operation are the direct results of
these measurement advancements in the 4342A.
For determing the resistance, reactance, or
quality factor of capacitance and inductance
samples in the high frequency region, the
4342A is a most versatile measuring instru-
ment. The 4342,1 can measure the dissipation
factor and dielectric constant of insulating
materials, coefficient of coupling, mutual
inductance, and the frequency characteristics
of transformers. Accessories which extend
jacent to the capacitance scale at seven
the measurement capabilities, designed for
Figure l-l. Model 4342A Q Meter.
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