
15
Current Probes
• Up to 100 MHz bandwidth and
500 Arms current
• Hybrid technology to measure
ac and dc
• Compatible with any 1 MΩ
scope input
Accurate current
measurements without
breaking the circuit
Compatible with any scope or voltage
measuring instruments with BNC
input, the 1146A and N2780A Series
current probes offer accurate and
reliable solutions for measuring dc
and ac currents. The probes use a
hybrid technology that includes a
Hall effect sensor, which senses the
dc current and a current transformer,
which senses the ac current, making
it unnecessary to make an electrical
connection to the circuit.
1146A 100 kHz current probe
The 1146A ac/dc current probe
provides accurate display and
measurement of currents from
100 mA to 100 Arms, dc to 100-kHz,
without breaking into the circuit. A
battery level indicator and overload
indicator help ensure proper readings.
It connects directly to the scope
through a 2 m coaxial cable with an
insulated BNC.
N2780A Series current probes with N2779A power supply
1147A 50-MHz current probe
with AutoProbe interface
The 1147A is a wide bandwidth, dc
to 50-MHz current probe. The probe
offers flat frequency response across
the entire dc to 50-MHz bandwidth,
low noise (< –2.5-mArms) and low
circuit insertion loss.
The 1147A probe is compatible
with the AutoProbe interface,
which completely configures the
oscilloscope for the probe when
used with the 5000/7000 Series and
300-MHz - 1-GHz 6000 Series scope.
Probe power is provided by the scope,
so there is no need for an external
power supply.
1146A 100 kHz current probe
1147A 50-MHz current probe with
AutoProbe interface
The N2780A Series current probes
are high bandwidth, active current
probes, featuring flat bandwidth, low
noise (< –2.5-mArms) and low circuit
insertion loss. In conjunction with
the power supply (model N2779A),
this probe can be used with any
oscilloscope having a high-impedance
BNC input. The companion power
supply N2779A (3x 12 Vdc output)
lets you connect three N2779As to a
single power supply.
N2780A/81A/82A/83A
2-MHz/10-MHz/50-MHz/
100-MHz current probe
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