KEYSIGHT 示波器探棒 Probe

Current Probes

Keysight offers a broad range of current probing solutions including clamp-on current probes with bandwidths from DC to 150 MHz, Rogowski coils that can measure peak currents up to 3000 Amps, and high-sensitivity R-shunt probes that can measure current as low as 50 µA.

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AC/DC Hall-Effect (Clamp-On) Current Probes
Model Bandwidth Max Current Conversion Factor (Attenuation) Min Scope Vertical Scale  Probe-to-Scope Interface Power Source
N7026A 150 MHz 40 A-Pk1, 30 A-RMS1 1 V/A (1:1), 0.2 V/A (5:1)2 1 mA/div AutoProbe1 Oscilloscope
N2893A 100 MHz 30 A-Pk3, 24 A-RMS3 0.1 V/A (10:1) 10 mA/div AutoProbe1 Oscilloscope
N2783B 100 MHz 50 A-Pk, 30 A-RMS 0.1 V/A (10:1) 10 mA/div BNC N2779A
1147B 50 MHz 30 A-Pk3, 24 A-RMS3 0.1 V/A (10:1) 10 mA/div AutoProbe1 Oscilloscope
N2782B 50 MHz 50 A-Pk, 30 A-RMS 0.1 V/A (10:1) 10 mA/div BNC N2779A
N2781B 10 MHz 300 A-Pk, 150 A-RMS 0.01 V/A (100:1)  100 mA/div BNC N2779A
N2780B 2 MHz 700 A-Pk, 500 A-RMS 0.01 V/A (100:1)  100 mA/div BNC N2779A
1146B 100 kHz 100 A-Pk, 100 A-RMS 0.1 V/A (10:1), 0.01 V/A (100:1)4 10 mA/div BNC 9 V Battery
AC-Only Rogowski Current Probes
Model Bandwidth Max Current Conversion Factor (Attenuation) Probe-to-Scope Interface Power Source
N7042A 9.2 Hz- 30 MHz 300 A-Pk 0.02 V/A (50:1) BNC AC power adapter or 4x AA batteries
N7041A 12 Hz - 30 MHz 600 A-Pk 0.01 V/A (100:1) BNC AC power adapter or 4x AA batteries
N7040A 3 Hz - 23 MHz 3000 A-Pk 0.002 V/A (500:1) BNC AC power adapter or 4x AA batteries
High-Sensitivity AC/DC R-Shunt Current Probes
Model Bandwidth Current Range5 Gain Channels Probe Heads (Standard) Probe-to-Scope Interface Power Source
N2820A Zoom-out: 3 MHz
Zoom-in: 500 kHz		 Zoom-out: 5 A
Zoom-in: 50 µ A 		 Zoom-out: 1.97
Zoom-in: 300		 2 20 mΩ, 100 mΩ,
User-defined		 AutoProbe1 Oscilloscope
N2821A Zoom-out: 3 MHz
Zoom-in: 500 kHz		 Zoom-out: 5 A
Zoom-in: 50 µ A 		 Zoom-out: 1.97
Zoom-in: 300
 		 1 20 mΩ, 100 mΩ,
User-defined		 AutoProbe1 Oscilloscope
  1. When using a power adapter booster (standard). 15 A-Pk, 5 V-RMS without oscilloscope-provided power only. An MXR/EXR enables max current range without using the power adapter.
  2. Auto-selected based on Amps/division setting.
  3. The maximum number of current probes supported by InfiniiVision oscilloscopes is limited depending on the oscilloscope. Infiniium oscilloscopes have no limitations.
  4. Manually selectable. 
  5. A wider input range is possible when using the user-defined head and Rsense.
Oscilloscope Compatibility for Current Probes
Probe-to-scope Interface Compatible Oscilloscopes
BNC
  • InfiniiVision 1000, 2000, 3000A, 3000T, 4000, and 6000 X-Series
  • Infiniium EXR, MXR, S-Series, 9000, and 90000A Series
  • Any vendor’s oscilloscope with a BNC input connection and a 1 MΩ input impedance termination
AutoProbe1
  • InfiniiVision 3000A, 3000T, 4000, and 6000 X-Series
  • Infiniium EXR, MXR, S-Series, and 9000 and 90000A Series
  • Infiniium UXR (3.5 mm models), V, Z, Q, and 90000X Series with the use of the N5449A adapter
  • Infiniium UXR (1 mm & 1.85 mm models) with the cascaded use of the N5449A & N2852A adapters (only for 1147B and N2893A, not for N7026A, N2820A/21A)
AutoProbe1 Interface

Keysight’s AutoProbe1 interface provides the following:
  • DC voltage to power active probe circuitry
  • Automatic detection of probe attenuation
  • Automatic control of selectable probe attenuation on some probes
  • Probe DC offset on many probes