N2780B Series AC/DC Current Probes A wide selection of current

N2780B Series AC/DC Current Probes
A wide selection of current probes to meet
your application's needs
Data Sheet
Hybrid technology for AC and DC measurements
Using hybrid technology that includes a Hall-effect sensor and an AC current
transformer, the probes provide accurate measurement of DC or AC currents up to
500 Arms (for model N2780B) or DC–100 MHz (for model N2783B), without breaking into the circuit. Using split core construction, the probe easily clips on and off
of a conductor.
Wide range of applications
Figure 1 N2780B Series current probes
with N2779A power supply
• Various bandwidths: DC to 2 MHz,
10 MHz, 50 MHz, 100 MHz
• DC and AC measurements
• Superior 1% accuracy and high
signal-to-noise ratio
• Overload-protect function prevents
probe damage from excessive input
• Direct connection to high-impedance
1 MΩ BNC input of oscilloscope
• “Demagnetize” button to remove any
residual magnetism that builds up in
the magnetic core
• External power supply (N2779A) lets
you connect up to three N278xB
current probes to a single power
supply
Compatible with any oscilloscope
with a high-impedance BNC input, the
new N2780B Series current probes
offer accurate and reliable solution for
measuring DC and AC currents.
The current probes feature broad measurement ranges (up to 500 A), flat frequency response, low noise and low insertion loss that make the probes ideal for current measurements in areas such as measuring steady state or transient current
of motor drives, switching power supplies, inverters, controllers, sensors, disk
drives, LCD displays, electronic ballasts and amplifiers. The high signal-to-noise
ratio of the N2782B and N2783B makes them ideal for making low-level current
measurements in milliampere ranges.
Accurate current measurement
A built-in DEMAG (demagnetize) function allows the removal of any residual
magnetism that has built up in the magnetic core due to power on/off switching
or excessive input current. In addition, voltage offset or temperature drift on the
probe can be easily corrected by using the zero adjustment control.
Figure 2 N2783B, N2780B, N2781B and N2782B current probe (from left to right)
-10
Maximum input current (Arms)
35
Amplitude (dB)
-20
-30
-40
-50
-60
30
25
20
15
10
5
1
10k
100
1M
10
100M
100
1k
10k
Figure 3 Frequency response of N2783B
1M
10M
12
9
Deviation (%)
1
100m
10m
6
3
0
-3
-6
0.001
1m
0.01
0.1
1
10
Input Current (A)
100
1k
10k
100k
1M
10M
100M
AC 50 Hz
Frequency (Hz)
Figure 5 Insertion impedance of N2783B
DC
Figure 6. Amplitude accuracy characteristics of N2783B
Note: For the characteristic plots of other current probe models, refer to the N2780B Series current probe user’s manual.
N2779A 3-channel power supply specifications
Applicable current probes:
Number of power supply connectors:
Connector type:
Output voltage:
Maximum rated power:
Input power requirement:
2
100M
Figure 4 Continuous maximum input rating of N2783B
10
Input Impedance (ohm)
100k
Frequency (Hz)
Frequency (Hz)
N2780B, N2781B, N2782B, N2783B and N2774A
3
LEMO inc./FFA..0S.304.CNAC42Z
DC (12 V, 2.5 A)
170 VA
AC 100-240 VAC, 50/60 Hz, 125-170 VAC
100
Model number
N2780B
N2781B
N2782B
N2783B
Bandwidth (-3dB)
DC to 2 MHz
DC to 10 MHz
DC to 50 MHz
DC to 100 MHz
Risetime
175 ns or less
35 ns or less
7 ns or less
3.5 ns or less
Maximum current (continuous) RMS
500 A
150 A
30 A
30 A
Maximum peak current (non-continuous)
700 A peak
300 A peak;
50 A peak
50 A peak
Lowest measurable current (at ±3% accuracy
at DC, scope set to 1 mV/div and
high-resolutionmode on)
20 mA
20 mA
5 mA
5 mA
Output voltage rate
0.01 V/A (100:1)
0.01 V/A (100:1)
0.1 V/A (10:1)
0.1 V/A (10:1)
Max input voltage**
600 V CAT II,
300 V CAT III
600 V CAT II,
300 V CAT III
300 V CAT I
300 V CAT I
Amplitude accuracy*
(DC and 45 to 66 Hz, rated current)
±1.0% rdg.
± 500 mA
±1.0% rdg.
± 100 mA
±1.0% rdg.
± 10 mA
±1.0% rdg.
± 10 mA
Noise (measured with 20 MHz
bandwidth limit filter on the scope)
Equivalent to
25 mArms or less
Equivalent to
25 mArms or less
Equivalent to
2.5 mArms or less
Equivalent to
2.5 mArms or less
Temperature coefficient for sensitivity (within a
range of 0°C to 40 °C or 32 °F to 104 °F)
±2% or less
±2% or less
±2% or less
±2% or less
Effect of external magnetic fields
(in a DC to 60 Hz, 400 A/m magnetic field)
Equivalent to a
maximum of
800 mA
Equivalent to a
maximum of
150 mA
Equivalent to a
maximum of 20 mA
Equivalent to a
maximum of 5 mA
Maximum rated power
7.2 VA (with rated
current)
5.5 VA (with rated
current)
5.6 VA (with rated current)
5.3 VA (with rated current)
Rated supply voltage
DC ±12 V ±0.5 V
DC ±12 V ±1 V
DC ±12 V ±0.5 V
DC ±12 V ±0.5 V
Diameter of measurable conductors
20 mm dia. (0.79” dia.)
20 mm dia. (0.79”
dia.) )
5 mm dia. (0.2” dia.)
5 mm dia. (0.2” dia.)
Diameter of measurable conductors
Sensor cable:
Approx. 2 m (78.7”)
Power supply cable:
Approx. 1 m (39.4”)
Sensor cable:
Approx. 2 m (78.7”)
Power supply cable:
Approx. 1 m (39.4”)
Sensor cable:
Approx. 1.5 m (78.7”)
Power supply cable:
Approx. 1 m (39.4”)
Sensor cable
Approx. 1.5 m (78.7”)
Power supply cable:
Approx. 1 m (39.4”)
Note*: The amplitude accuracy specifications are guaranteed at 23°C ± 3°C (or 73°F ± 5°F)
**: Insulated conductor should be used.
Compatible Oscilloscopes
Ordering Information
Any oscilloscope offering 1 MΩ BNC
input including Agilent 1000, 3000
InfiniiVision 2000X, 3000X, 5000, 6000
and 7000 Series, and Infiniium 8000 and
9000 Series. You must select the input
impedance of the oscilloscope to be
1 MΩ in order to make accurate measurements. If the oscilloscope you are
using has a 50Ω input impedance setting only, you can purchase the Agilent
E2697A 50Ω to 1 MΩ adapter for use
with the Infiniium 80000 or 90000
Series or the N5449A high impedance
probe adapter for use with the Infiniium
90000 X-Series.
N2780B
2 MHz/500A AC/DC current probe
N2781B
10 MHz/150A AC/DC current probe
N2782B
50 MHz/30A AC/DC current probe
N2783B
100 MHz/30A AC/DC current probe
N2779A
3-channel power supply for
N2780B Series current probes
3
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Revised: January 6, 2012
Product specifications and descriptions
in this document subject to change
without notice.
© Agilent Technologies, Inc. 2012
Published in USA, June 5, 2012
5989-6432EN