Figure 2-8 Ac Current Multifunction Multiple Displays; Two And Four-Wire Resistance - Keithley 2002 User Manual

Front Panel Operation
RMS (or AVG)
RANGE = Set by ACI range (auto or fixed).
Autoranges independently of other function.
REL = Operates normally.
SPEED = Set by ACI speed.
FILTER = Set by ACI filter.
RESOLUTION = Set by ACI resolution.
COUPLING = Set by ACI coupling.
AC-TYPE = Set by ACI AC-Type.
+000.000 µAAC
+0.0000 Hz
FREQ
RANGE = Set by MAX-SIGNAL-LEVEL in CONFIGURE
FREQUENCY menu.
Autorange has no effect.
REL = No effect.
TRIGGER LEVEL = Set while in FREQ. Not available in
CONFIGURE FREQUENCY menu.
FILTER = Unaffected by ACI filter. FREQ has no filter.
RESOLUTION = Fixed at 5 digits.
COUPLING = Set by ACI coupling.
INPUT TERMINALS = Fixed on CURRENT
A. AC RMS (or average) current and frequency
functions
Figure 2-8
AC current multifunction multiple displays

2.4.3 Two and four-wire resistance

The Model 2002 can make 2-wire resistance measurements
from 100n to 1.05G and 4-wire resistance measurements
from 100n to 2.1M . The basic measurement procedures
for 2 and 4 are contained in the Getting Started manual.
Shielding
It helps to shield resistance greater than 100k to achieve a
stable reading. Place the resistance in a shielded enclosure
and electrically connect the shield to the INPUT LO terminal
of the instrument.
2-28
RMS (or AVG)
RMS
RANGE = Set by ACI range (auto or fixed).
Autoranges independently of other function.
REL = Operates normally.
SPEED = Set by ACI speed.
FILTER = Set by ACI filter.
RESOLUTION = Set by ACI resolution.
COUPLING = Set by ACI coupling.
+000.000 µAAC
AVG=000.000 µAAC
AVG
RANGE = Set by ACI range (auto or fixed).
Autoranges independently of other function.
REL = No effect.
SPEED = Set by ACI speed.
FILTER = Unaffected by ACI filter.
RESOLUTION = Fixed at 5.5 digits.
COUPLING = Set by ACI coupling.
B. AC RMS and average current functions
Resistance configuration
The following information explains the various configura-
tion options for 2-wire and 4-wire resistance measurements.
The configuration menus are summarized in Tables 2-16 and
2-17. The menus are accessed by pressing CONFIG and then
2 or 4. Paragraph 2.3.5 summarizes the rules for navigat-
ing through the menus.
Note that a function does not have to be selected in order to
be configured. When the function is selected, it will assume
the programmed status.
RMS