Resistance Measurements (2- And 4-Wire) - Keithley 2100 User Manual

Section 3: Basic Measurement Functions
Figure 3-4
Model 2100 current measurement (front panel)
6
PREV
DISPLAY
NEXT
OFF
ON
POWER
(Warning: Maximum input = 3A DC or RMS)
NOTE
Figure 3-5
Model 2100 current measurement
CM

Resistance measurements (2- and 4-wire)

The ranges for resistance measurement are 100 , 1K , 10k , 100k , 1M , 10M , and 100M ,
with a sensitivity of 100
2-wire mode (refer to
current is sourced to the test resistance through one pair of test leads, and the test voltage across
the resistance under test is measured from another set of test leads. As a result, the 4-wire mode
is more accurate for low resistance measurements. The disadvantage of this is the longer settling
time for 4-wire mode.
for 2-wire mode and 4-wire mode respectively.
3-4
FUNCTION
DCI ACI 4 PERIOD
4
2 2 2 2
DCV DCV AC V AC V
FREQ CONT TEMP
LIMIT S MX+B dBm dB
%
FILTER DIGITS RATIO NULL
MIN/MA X
EXTRIG HOLD MATH
1
AUTO
STORE L OCA L SHIFT SHIFT
SINGL E TRIGGER RECA L L
TRIGGER MEMORY
Follow the same procedure when using either the front or rear panel terminals (refer to
Figure 3-5).
CM = Current measurement
μ
(on 100
Figure 3-6) and 4-wire mode (refer to
Figures 3-8
Return to
Model 2100 6 1/2-Digit Resolution Digital Multimeter User's Manual
CAT 1000V
CAT 600V
SENSE
4 WIRE
HI
RATIO
200V
REF
PEA K
LO
SETUP
RANGE
3A
PREV NEXT
INPUTS
RMS
LOCK
1
5 F R
ESC ENTER
A UTO A UTO
FRONT/REAR
3
MENU
CONFIG CONFIG
CAT 1000V
CAT 600V
MA DE IN
TA IWA N
* T w 0 0 0 0 1 0 0 0 *
range). There are two modes for measuring the resistance:
and 3-9 show the input terminal connections on the rear panel
Section Topics
INPUT
V
2
1000V
PEA K
Current
500V
PEA K
source
3A 250V
AMP S
WA RNING
NO INTERNA L SERVICEA B L E PA RTS, SERVICE
B Y QUA L IFIED PERSONNEL ONLY.
CA UTION:
FOR CONTINUED PROTECTION A GA INST FIRE HA ZA RD.
REPL A CE FUSE WITH SA ME TYPE A ND RATING.
LINE
120V 120V
240V 240V
Figure 3-7). In 4-wire mode, the test
2100-900-01 Rev. B / July 2007