Capture Inrush, Micro and High-Speed Currents with a Single Probe

Hioki flat bandwidth current probes are best-in-class current sensors for use with Memory HiCorders and high performance oscilloscopes. The CT6711 is a 3-range, high-sensitivity current probe that offers a wide DC to 120 MHz bandwidth and 200 μA to 30 A input, letting your capture signals across an expansive current range, from steady state to transient currents, when developing switching power supplies, inverters, and motor controllers.  

Use with an instrument with a high input impedance of 1 MΩ or higher.

Key Features

  • 3 ranges in a single probe - 30 A, 5 A, 0.5 A.  Observe a wide current range from micro currents to 30 A.
  • Wide band: DC to 120 MHz (-3 dB)
  • High S/N ratio and 10 times output rate: Observe waveforms at 100 μA/div at oscilloscope maximum voltage sensitivity setting of 1 mV/div
  • Directly connect to an oscilloscope’s BNC input terminal (*1)
  • *1:Connecting the probe's metal BNC terminal to a Memory HiCorder’s plastic BNC terminal may distort or damage the plastic terminal. To avoid damage, please connect and disconnect the probe cable straight to the BNC terminal of the waveform monitoring equipment.

Model No. (Order Code)

CT6711 From 200μA, 120MHz bandwidth
Note: If power cannot be supplied from the Memory HiCorder, the optional Power Supply 3269 is required. Please pay attention to offset drift during continuous, long-term measurement.

3 Full Ranges of 30 A, 5 A, And 0.5 A Deliver an Expansive Current Measurement Spectrum

Monitor current under a broad range of operating conditions from 0.5 to 30A. Simply press the RANGE key on the termination box to toggle between ranges, and analyze everything from sudden inrush to slow moving consumption current, down to micro currents of low energy devices, all with a single device.

Built-in Function to Protect Against Excessive Input

When input exceeds the rated value, a warning indicator flashes to signal a warning. In addition, if you select the incorrect range and then input a current signal that is above the rated current for that range, this function protects the instrument from damage due to overheating. Caution: Input currents that exceed the frequency derating for the 30 A range may cause measurement circuit damage before the protection function kicks in.

High Signal-to-Noise (S/N) Ratio

Observe waveforms as they are without needing to rely on your oscilloscope’s filter settings and averaging function. The 10V/A output rate is 10 times the traditional 1V/A rate of legacy products, allowing you to improve the oscilloscope’s voltage sensitivity by a factor of 10, thereby enhancing the S/N ratio of the scope itself to deliver much clearer waveforms.

Basic specifications

Accuracy guaranteed: 1 year
Frequency bandwidth DC to 120 MHz (-3 dB)
Rise time 2.9 ns or shorter
Delay time
30 A range: 12 ns, 5 A range: 12 ns, 0.5 A range: 13 ns
(Delay time relative to rising waveform of input signal 1 ns)
Noise level 75 μA rms max (at 0.5 A range, using 20 MHz band measuring instrument)
Max. rated current 30 A range: 30 A rms, 5 A range: 5 A rms, 0.5 A range: 0.5 A rms
(DC, and sine wave, requires derating at frequency)
Max. allowable peak current 30 A range: ±50 A peak (within the input limit time 2 s)
5 A range: ± 7.5 A peak,
0.5 A range: ± 0.75 A peak (< 10 MHz), ±0.3 A peak (≥ 10 MHz)
Amplitude accuracy 30 A range: ±3.0% rdg. ±1 mV, (Typical) ±1.0% rdg. ±1 mV (≤ 10 Arms, DC, 45 to 66 Hz sine wave, within the maximum peak current of each range)
5 A range: ±3.0% rdg. ±1 mV, (Typical) ±1.0% rdg. ±1 mV (DC, 45 to 66 Hz sine wave, within the maximum peak current of each range)
0.5 A range: ±3.0% rdg. ±10 mV, (Typical) ±1.0% rdg. ±10 mV (DC, 45 to 66 Hz sine wave, within the maximum peak current of each range)
Output rate 30 A range: 0.1 V/A, 5 A range: 1 V/A, 0.5 A range: 10 V/A, (The output of this probe is internally terminated)
Measurable conductors φ 5 mm (0.20 in), Insulated conductor
Power supply Supplied from Power Supply 3269, Probe Power Unit Z5021
Cable length Sensor cable (between relay box and sensor): 1.5 m (4.92 ft)
Power cable: 1.0 m (3.28 ft) (Power plug: FFA.0S.304.CLAC37Y / LEMO inc.)
Dimensions and mass Sensor: 155 mm (6.10 in)W × 18 mm (0.71 in)H × 26 mm (1.02 in)D, Relay box section: 45 mm (1.77 in)W × 120 mm (4.72 in)H × 25 mm (0.98 in)D
Terminator section: 29 mm (1.14 in)W × 83 mm (3.27 in)H × 40 mm (1.57 in)D mm, 370 g (13.1 oz)
Included accessories Instruction manual ×1, Carrying case ×1

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