HP 34401A MULTIMETER

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HP 34401A MULTIMETER
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HP 34401A Multimeter
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Safety Tips
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Safety Tips
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Starting Multimeter
000.002 mVDC
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Menu at a Glance
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Math Functions
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Triggering
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Measuring DC Voltage
Note measurement indicates only DC portion of
signal
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Range and Resolution

• Range

100 mV 1 V 10 V 100
V 1000 V

(750 VAC)
Maximum
m
m
m
100 nV 1 V 10 V 100
V 1 mV
Resolution
m

(750 VAC)
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Fastest, Least Accurate
Default
Slowest, Most Accurate
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Measuring AC Voltage
707.106 mVAC
Note measurement indicates only the AC portion
of signal
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AC Filter
Selectable through the measurement menu
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AC-Coupling vs. DC-Coupling
AC-Coupling-Advantage
Removes DC Portion of Signal
AC-Coupling-Disadvantage
Low Frequency waveforms can be cut-off
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toT
1
2

Vrms
dt
v
(
)
t
T
to
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Vp
Vrms
Vpp
Vrms Vp .707 (Sine wave)
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Measuring Current
r
1.000000 ADC

R
X

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Measuring Resistance 2-wire
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Measuring Resistance 4-wire
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4-Wire Resistor Measurement
High- Input
i
High- Sense
i
High Z
R
Low- Sense
i
i
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Forward Bias
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(No Transcript)
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Frequency and Period
Period
f1
(
)
t
Frequency 1/Period
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Ratio Measurements
Ratio
To enable ratio measurements, use the MEAS menu.
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Waveform
Voltage
RMS vs. Peak

Vrms

Vp
1.0
1.414
sine
1.0
1.733
triangle
1.0
1.0
square
1.0
1.0
DC
Peak voltage 1/2 of Peak to Peak voltage
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High Resistance
High Z Termination

• SIGNAL SOURCE

MEASURING DEVICE
i
W
Ro50
Ri
Ci
Vm
Vs
i

1
Ri
Zc
Zin
Zc
2p
Ri
Zc
j
f
C
Ro

_at_

Vs
1
Vm
. . . .
for very large Zin, Vs

Vm
Zin
As frequency increases, Zin decreases
For less than 1 error Zin
gt
100 Ro
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SIGNAL SOURCE
MEASURING DEVICE
i
Ri
Ci
Vm
Vs
i
i
High Resistance

Vs
1
Vm

Vs
Vm
1
Vm
2
Vm will not equal Vs, if Zin Ro, but the ratio
between them is 21.
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Remote Interface
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Loading Errors (DC volts)
Rs
HI
Ri
Vs
LO
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Leakage Current Errors
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HI
Vtest
Rs
LO
Vf
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Noise caused by Ground Loops
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(No Transcript)
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Where to get more information