User manual

Front Panel Operation
2001-900-01 Rev. K/ August 2010 3-29
AC current measurements
The Model 2001 can make AC current measurements
between 100pA and 2.1A. Assuming “bench reset”
conditions (see paragraph 3.12.1), the basic procedure is as
follows:
1. Connect the test leads to the AMPS and INPUT LO ter-
minals of the Model 2001. Either the front or rear inputs
can be used; place the INPUTS button in the appropriate
position.
2. Select the ACI function.
3. Select a range consistent with the expected current. For
automatic range selection, press the AUTO key. The
AUTO annunciator denotes whether auto-ranging is en-
abled.
4. Connect the test leads to the source as shown in Figure
3-11.
CAUTION
Do not apply more than 2.1A, 250V to
the AMPS input, or the amps protection
fuse will blow.
5. Observe the display. If the “Overflow” message is
shown, select a higher range until a normal reading is
displayed. Always use the lowest possible range for the
best resolution.
6. Take a reading from the display.
AMPS fuse replacement
There are two protection fuses for the current ranges, one for
the front terminals, another for the rear. This procedure
describes how to change an AMPS fuse.
WAR NI NG
Make sure the instrument is disconnected
from the power line and other equipment
before replacing an AMPS fuse.
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DC and AC current measurements
NEXT
DISPLAY
PREV
POWER
DCV ACV DCI ACI Ω2 Ω4
FREQ TEMP
REL TRIG STORE RECALL
INFO LOCAL CHAN SCAN CONFIG MENU EXIT ENTER
RANGE
AUTO
FILTER MATH
RANGE
2001 MULTIMETER
SENSE
Ω 4 WIRE
HI
INPUT
LO
INPUTS
CAL
500V
PEAK
F
R
FRONT/REAR
2A 250V
AMPS
350V
PEAK
1100V
PEAK
Model 2001
Caution : Maximum Input = 2.1A
Current
Source
+000.0050 µADC
Range: 200 µADC