38
34980A User’s Guide
2
Features and Functions
Resistance Measurement Configuration
This section contains information to help you configure the instrument for
making resistance measurements. Use the 2- wire method for ease of
wiring and higher density or use the 4- wire method for improved
measurement accuracy. The measurement ranges shown below.
Offset Compensation
Offset compensation removes the effects of any dc voltages in the circuit
being measured. The technique involves taking the difference between two
resistance measurements on the specified channels, one with the current
source turned on and one with the current source turned off.
Applies only to 2- wire and 4- wire resistance measurements on the
100
Ω
, 1 k
Ω
, and 10 k
Ω
ranges.
•
Four- wire measurements are not allowed on the multiplexer modules
configured for the 1- wire (single ended) mode (see
page 28
).
•
For 4- wire resistance measurements, the instrument automatically pairs
channel
n
in Bank 1 with channel
n+20
in Bank 2 (34921A, 34923A,
34925A) or
n+35
(34922A, 34924A) to provide the source and sense
connections. For example, make the source connections to the HI and
LO terminals on channel 2 in Bank 1 and the sense connections to the
HI and LO terminals on channel 22 (or 37) in Bank 2.
•
The
CONFigure
and
MEASure?
commands automatically disable offset
compensation.
•
The instrument disables offset compensation after a Factory Reset
(
*RST
command). An Instrument Preset (
SYSTem:PRESet
command) or
Card Reset (
SYSTem:CPON
command) does
not
change the setting.
Front Panel Operation:
DMM or Channel (Configure) > OFFSET COMP
Remote Interface Operation:
[SENSe:]FRESistance:OCOMpensated {OFF|ON} [,(@<ch_list>)]
[SENSe:]RESistance:OCOMpensated {OFF|ON} [,(@<ch_list>)]
If you omit the optional <ch_list> parameter, the command applies to the
internal DMM. For 4- wire measurements, specify the paired channel in
Bank 1 (source) as the <ch_list> channel (channels in Bank 2 are not
allowed in the <ch_list>).
100
Ω
1 k
Ω
10 k
Ω
100 k
Ω
1 M
Ω
10 M
Ω
100 M
Ω
Autorange
Содержание Agilent 34980A
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Страница 198: ...186 34980A User s Guide 5 Matrix Switch Modules ...
Страница 210: ...198 34980A User s Guide 6 General Purpose Switch Modules ...
Страница 216: ...204 34980A User s Guide 7 RF Multiplexer Switch Modules ...
Страница 314: ...302 34980A User s Guide 11 4 Channel Isolated D A Converter with Waveform Memory Module ...
Страница 322: ...310 34980A User s Guide 12 Multifunction Module with DIO D A and Totalizer ...
Страница 326: ...314 34980A User s Guide 13 Breadboard Module 34959A Breadboard Module Layout shown with cover removed ...
Страница 335: ...Breadboard Module 13 34980A User s Guide 323 Dimensions of Suggested maximum size Custom PC Board ...
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