IET Labs, Inc. RLC Digibridge 1693, User And Service Manual, Page: 54 / 171

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1693 RLC Digibridge
Operation
3.2.14 Connection to 1417
Capacitance Standard
Connection to the 1417 Capacitance Standard can be
accomplished using the 1657-9600 Extender cables
or 7000-04 Alligator Clip Leads. A four terminal
connection should be made to the 1417 as shown
below. The Digibridge may have a slight dc voltage
so a blocking capacitor, greater than 200 µF, should
be connected in series with the
H
Current terminal.
Open compensation should be performed as normal.
Short compensation should be performed as follows;
with cables connected as above with exception of
plugging Red White/PH lead into Black White/PL
lead. Set the 1417 to a capacitance value of 1F and
frequency of 1kHz and then perform short on the
Digibridge. Return Red White/PH lead to H Potential
connection on 1417 when short is complete. Note: It
can be beneficial to twist potential leads together and
twist the current leads together to minimize coupling.
Figure 3-25: Connecting to a 1417
Blocking
Capacitor
Sense +/Red White/PH
Sense -/Blk White/PL
Drive +/Red/IH
Drive -/Black/IL