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INTRODUCTION
SECTION
1
INTRODUCTION
1. 1 PURPOSE.
The Type 1608-A Impedance Bridge (Figure 1-1)
is a self-contained impedan.ce-measuring system, which
includes six bridges for the measure'Tlent of capaci-
tance, conductance, resistance, and inductance, as well
as the generators and dete·ctors necessary for de and
l-kc ac measurements.
1.2 DESCRIPTION.
1.2.1
GENERAL.
The
SIX
bridges contained in the
Type 1608-A are shown schematically in Figure 1-2.
Provision is made for ac and de measurements, both
with internal and external generator and detector.
The
generator and detector connections for the four "on"
positions of the function switch (INT AC, INT DC, EXT
AC, EXT DC) are shown schematically in Figure 1-3.
C
s
(
LOW 0\
o
TO
I)
SERIES CAPACITANCE
R N
Cx'R;Cr
Ox' IIIC x R x ' OICrR r
C
p
(
HIGH 0\
.02-2 )
PARALLEL CAPACITANCE
C
x
1.2.2 CONTROLS AND CONNECTORS. Table 1-1 lists
the controls and connectors on the front and rear panels
of the Type 1608-A Impedance Bridge.
1.3 SYMBOLS, ABBREVIATIONS, AND DEFINITIONS.
Table 1-2 lists symbols and abbreviations used in
this manual, together with their definitions.
Figure 1-2. The six bridges.
of the Type 16GB-A.
G
p
(
CAP
Q)
0-1.2
PARALLEL CONOI/CTANCE
C
x
R S
(
INO
Q\
0-1.2)
SERIES RESISTANCE
Lx
R
x
' R
N
R
A
Rr
Q
x "
41L
x :'
41C
r
H
r
Rx
L
s
G
LOW
Q\
0.5 -50/
SERIES INOI/CTANCE
Lx
L
x
'R N
1
c r
Ox ,IiIL x .. tIICrR r
R x
L
p
(
HIGHQ'\
1- 00.../
PARALLEL INOI/CTANCE
Lx
1
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