IET Labs, Inc. RLC Digibridge 1693, User And Service Manual, Page: 159 / 171

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1693 RLC Digibridge
Service and Maintenance
* If the calibrated value of the resistance standard is slightly different from the nominal value, or if the standard’s accuracy is
different from the typical accuracy, correct the “acceptable extremes” accordingly.
Table 5-8: Resistance accuracy checks at 1 kHz
5.8.5 Inductance Measurement
Accuracy
This procedure follows after paragraph 5.8.4. (Thus,
test frequency = 1 kHz, test voltage = 1 V, measure
rate = SLOW, range held indicator is NOT lit, and
parameter Rs/Q is specified.)
1. Connect the 1657-9600 extender cable to
the Digibridge test fixture. Hand tighten
the screws, to provide ground (guard)
connection.
2. Connect the “high” leads (red and red/white)
together and separately connect the “low”
leads (black and black/white) together.
3. Before measurement, zero the Digibridge
as follows:
A. Keep the “high” banana-plug stack sepa-
rated from the “low” stack.
B. Press [FUNCTION] key (if necessary) to
select MEASURE function.
C. Press [MEASURE MODE] key (if neces-
sary) to select TRIGGERED mode.
D. Press the following keys: [1] [6] [9] [3] [=]
[SHIFT] [OPEN].
E. Confirm that the GO indicator is lit.
F. Keep hands and objects at least 10 cm
(4 in.) from test fixture.
G. Press the START button.
H. Wait for the GO indicator to be lit again.
The RLC display should be .00000pF.
I. Connect the 2 banana plug stacks together,
leave the guard (black /green) open.
J. Press the following keys: [1] [6] [9] [3][=]
[SHIFT] [SHORT].