Connection To 1404 Reference Standard Capacitor; Figure 3-24: Connecting 1693 To A 1404 - IET Labs, Inc. RLC Digibridge 1693 User And Service Manual

3.2.13 Connection to 1404 Reference
Standard Capacitor
Note: These same instructions also apply to 1403,
1408, and 1422.
Connection to the 1404 Reference Standard Capacitor
can be accomplished using the 1689-9602 BNC to
BNC cables, two BNC-T connectors and two GR 874
adapters, if applicable. Open and Short compensa-
tion should be performed. The connections shown
are applicable for 1403, 1408 and 1422 Standard
Capacitors as well.
R L C G
1000.0
uF nF pF mH
I P
L L
PL
IL
HIGH
1000 pF
Type 1404-A
REFERENCE STANDARD
CAPACITOR
formerly made by GenRad
Operation
1693 RLC DigiBridge
Z Y Q D R X B ANG
.0002
H uS mS S k DEG PPM
P I
H H
PH IH
LOW

Figure 3-24: Connecting 1693 to a 1404

Measurement of capacitor standards is similar to
measurements of inductors using a direct compari-
son method. The unknown is simply compared to a
standard capacitor of almost equal value that has a
NIST calibration and the measured difference is used
to obtain the value of the unknown. This technique
is straight forward when dealing with three or four
terminal standards as cable geometry and stray ca-
pacitance issues are negligible.
TM
CONST I.
CONST V.
RANGE HELD
NOT 1kHz
RATIO
On
R/Q L/Q C/D C/R
POWER
Off
1693 RLC Digibridge
EXTERNAL
BIAS
BIAS
On
ON
Off
GO
NO GO
START
REMOTE
CONTROL
PAR
SER
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