Boonton Electronic - 72BD - Level Meter
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Equipment:
72BD
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Information
The Model
72BD Capacitance Meter provides instant,
direct-reading, three*-terminal, and differential
capacitance measurements from 0.001 to 2000 pF. This
capacitance coverage is divided into four ranges, selected
by panel pushbuttons, remotely, or autoranged, These are
arranged in a 2, 20, 200, and 2000 pF full-scale sequence.
The digital display provides 4 digit readout, decimal point,
overrange, and pF indications. The solid state design and
the low- level crystal-controlled signal source contribute
to the high stability and excellent reliability of the
instrument.
The measurement of semiconductors is facilitated by the 15
mV rms level of the 1 MHz test signal, and by the provision
for applying up to 600 volts of dc bias to the test specimen.
Bias voltage, of either polarity, may be applied to either
or both sides of the specimen.
The Model
72BD employs an unusual range-switching system
using switching diodes and miniature reed relays; the
elimination of the switch contacts from the measurement
circuits assures a maximum of reliability and stability. The
phase-sensitive detection system permits the measurement of
even low-Q devices (down to Q ~ 1) without sensibly
degrading the accuracy of the leasurement.
Two plug-in test connection adapters are supplied with the
Model 72BD. One of these, 72-4B, itted with two sets of
coaxial connectors, is intended for use with coaxial cables
and remotely ocated test fixtures for both three-terminal
and differential measurements. The other adapter, 2.-5C,
with two test posts and a ground terminal, is used for
wire-lead type components; differen- .ial measurements are
not possible with this adapter.
A linear dc output is available at rear-panel terminals and
at the appropriate pins on the ;ar edge connector. Binary
coded decimal outputs are also available at the rear edge
connector. ^?se two features extend the range of
applications beyond ordinary laboratory measurements to
elude production testing and integration into a controlled
test system, using logic-level programming.
Remote ranging is controlled by grounding the MANUAL DISABLE
terminal on the rear edge vector, disabling the front-panel
range switches. Grounding any one of the four range-line
rminals will then select that range, or auto enable will
select autorange.
User manual
Manual type:
User manual
Pages:
38
Size:
583.9 KB
Language:
english
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Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
Jan. 23, 2017
MD5:
e5eb1661-a77c-258e-549c-f062d1a9a989
Downloads:
719