Chapter 1 Introduction; Purpose - IET Labs, Inc. RLC Digibridge 1693 User And Service Manual

1.1 Purpose

The 1693 RLC Digibridge™ is a microprocessor-
controlled, automatic, programmable RLC measuring
instrument that provides high accuracy, convenience,
speed , and reliability at low cost. Limit comparison,
binning, and internal bias are provided; both test fre-
quency and voltage are selectable. With an interface
option, the Digibridge tester can communicate with
other equipment via IEEE-488 bus and respond to
remote control.
The versatile, adaptable test fixture, lighted keyboard,
and informative display panel makes the Digibridge
tester convenient to use. Measurement results are
clearly shown with decimal points and units, which
are automatically presented to assure correctness.
Display resolution is 5 full digits for R, L, C, G,
Z, and Y (4 full digits for D, Q, R, X, B, and ANG.
Notice that R is also known as ESR (equivalent series
resistance).
The basic accuracy is 0.02%. Long-term accuracy and
reliability are assured by the measurement system,
which makes these accurate analog measurements
over many decades of impedance without any critical
internal adjustments. Calibration to account for any
change of test-fixture parameters is semiautomatic;
the operator needs to provide only open-circuit and
short- circuit conditions in the procedure. The
Digibridge tester normally autoranges and automati-
cally identifies the principal measurement parameter.
Introduction
Chapter 1
INTRODUCTION
The optional test fixture 1689-9600, with a pair of
plug-in adaptors, receives any common component
part (axial-lead or radial-lead), so easily that insertion
of the device under test (DUT) is a one-hand opera-
tion. True 4-terminal connections are made automati-
cally. Extender cables are available for measurements
at a moderate distance from the instrument.
Limit comparisons facilitate sorting into 13 GO and
2 NO-GO bins.
• Test frequencies from 12 Hz to 200 kHz
• Test voltages from 5 mV to 1.275 V; bias (2 V)
• Delay (before data acquisition) from zero to
• Measurement speeds up to 30 per second
• Multi-measurement routines with automatic
• Displays: measured values , percentages, dif-
• Automatic output of value , bin number, bin
Bias can be applied to capacitors being measured,
either by programming the selection of an internal
supply (2 V) or by sliding a switch to connect an
external voltage source (up to 60 V).
A choice between two interface options provides full
"talker/listener" and "talker only" capabilities consis-
tent with the standard IEEE-488 bus . (Refer to the
IEEE Standard 488-1978, Standard Digital Interface
for Programmable Instrumentation.)
99999 ms
averaging and/or median taking of 2 to 255
measurements.
ferences, ratios, GO/NO-GO, binning
summary and other results via IEEE-488 bus
1693 RLC Digibridge
1