Resistance Measurement Accuracy - IET Labs, Inc. RLC Digibridge 1693 User And Service Manual

1693 RLC Digibridge
5.8.4 Resistance Measurement
Accuracy
This procedure follows after paragraph 5.8.3. (Thus,
test frequency = 1 kHz, test voltage = 1 V, measure
rate = SLOW, range held indicator is NOT lit, and
parameter Cs/D is specified.)
1. With the Digibridge still connected to
the 1657-9600 extender cable, zero the
Digibridge as follows:
A. Leave the high (red) banana plug stack
disconnected from the low (black) stack
B. Press [FUNCTION] key (if necessary) to
select MEASURE.
C. Press [MEASURE MODE] key (if neces-
sary) to select TRIGGERED mode.
D. Press the [Rs/Q] key.
E. Press the following keys: [1] [6] [9] [3] [=]
[SHIFT] [OPEN].
F. Confirm that the GO indicator is lit.
G. Keep hands and objects at least 10 cm
(4 in.) from test fixture,
H. Press the START button.
I. Wait for the GO indicator to be lit.
J. Connect the banana plugs to the 1433-33
Decade Resistor as follows:
• "High" leads (red and red/white) to the
H binding post
• "Low" leads (black and black/white) to
the L binding post
• Guard lead (black/green) to the G bind-
ing post.
• White bands should always be closes to
1433 terminals.
134
K. Disconnect any link between the G and L
binding posts.
L. Set the decade resistor dials to 00000 ohms.
M. Press the following keys: [1] [6] [9] [3]
[=] [SHIFT] [SHORT].
N. Confirm that the GO indicator is lit. Press
the START button.
O. Wait for the GO indicator to be lit again.
The RLC display should be .00000 ohms.
P. Press [MEASURE MODE] key to select
CONT.
2. Refer to Table 5-8. Set the decade resistor
dials to 0000010, as indicated in the first line
of the table and verify that the RLC display
is between the extremes listed . Repeat for
each line of the table, setting the decade resis-
tor dials, Digibridge equivalent circuit, and
measurement rate, and verifying the results,
as tabulated.
For more information on connecting to a 1433 Series
Decade Resistor see section 3.2.15.
Service and Maintenance