Oscilloscope probe SI-9002

Features

High Voltage Differential Input: Measures voltages up to ±1400 V (DC+Peak AC), suitable for power semiconductor circuits.
Bandwidth: DC to 25 MHz (-3dB), providing accurate measurements for a wide range of applications.
Attenuation Ratios: Selectable 1/20 or 1/200 for versatile voltage scaling.
High Accuracy: ±2% accuracy with a fast rise time of 14 ns for precise and reliable measurements.
Compact and Lightweight Design: Portable design with a length of 170 mm and weight of just 400 g for easy handling and storage.
Common Mode Range: ±1400 V (DC+Peak AC), enabling accurate differential measurements even in high-voltage environments.
Low Noise: Typical noise level of 0.7 mVrms, ensuring minimal signal interference.
Impedance: 50 Ohms (for use with a 1 MΩ oscilloscope input system), ensuring compatibility with standard oscilloscopes.
Power Supply: Powered by 4 x AA cells or a 9 VDC mains adapter (optional).
Safety Features: CAT III rated, with built-in protection against incorrect polarity.

The Differential probe SI-9002 extends the measurement power of oscilloscopes to power semiconductor circuits. This Differential Probe provides any general oscilloscope with a high voltage differential input.

The Differential probe SI-9002 is small and light, so it can be used in a very convenient way; just plug it into the input of, for example, the Handyscope HS5. The wide bandwidth and the high accuracy of this Differential Probe cater for a wide range of applications.

Using a built-in differential amplifier, the Differential probe SI-9002 scales and converts the high voltage differential input to a low voltage single ended BNC output. The differential input is useful in measurements of power semiconductor circuits, as no reference to ground is required. Both the positive and negative sides of the balanced input possess high voltage differential input up to 700 V, and its sensitivity can extend down to 100 mV. With high bandwidth and high response speed, the Differential probe SI-9002 is adequate for accurate dV/dt measurement in the fastest switching circuits of thyristors, bipolar transistors, or power MOSFETS.

Specification

Specification	Value
Bandwidth	DC to 25 MHz (-3dB)
Attenuation Ratio	1/20 or 1/200
Accuracy	±2%
Rise Time	14 ns
Input Impedance	4 MΩ, 5.5 pF each side ground
Input Voltage	Differential Range 1/20: ±140 V (DC+Peak AC) or 140 VrmsDifferential Range 1/200: ±1400 V (DC+Peak AC) or 1000 Vrms
Common Mode Range	±1400 V (DC+Peak AC) or 1000 Vrms
Absolute Max. Voltage	±1400 V (DC+Peak AC) or 1000 Vrms CAT III
Output Swing	±7 V (into 2kΩ load)
Offset (typical)	< ±5 mV
Noise (typical)	0.7 mVrms
Impedance (typical)	50 Ω (for 1 MΩ oscilloscope input system)
CMRR (typical)	-80 dB @ 50 Hz, -60 dB @ 20 kHz
Operating Temperature	-10 to 40 °C (14 to 104 °F)
Storage Temperature	-30 to 70 °C (-22 to 158 °F)
Operating Humidity	25 to 85% RH
Storage Humidity	25 to 85% RH
Power Requirements	4 x AA cells or regulated 9 VDC / 40 mA mains adapter
Length of BNC Cable	95 cm (37.4 inches)
Length of Input Leads	45 cm (17.7 inches)
Weight	400 g (14.1 ounces)
Dimensions (H x L x W)	21 mm x 170 mm x 63 mm (0.8″ x 6.7″ x 2.5″)

Voltage limit is the lesser of the DC+Peak AC and RMS values.
The supplied voltage must be less than 12V and greater than 4.4V, otherwise the differential probe could be damaged or can’t be operated properly.
Polarity is “+” inside and “-” outside. For wrong polarity, built-in circuit protects the differential probe, no danger or damage will occur.
When the voltage of the cells become too low, the power indicator on the panel will flicker.

Information

When using the Differential probe SI-9002 in combination with:

Handyscope HS4 DIFF
Handyscope HS6 DIFF without option SafeGround
WiFiScope WS4 DIFF
WiFiScope WS6 DIFF without option SafeGround
an extra grounding connection between the instrument and the Differential probe SI-9002 is required. When ordering a Differential probe SI-9002 to be used with one of these instruments, please mention that you also want the extra ground lead for the Differential probe SI-9002 and specify for which instrument.

Information:
When using the Differential probe SI-9002 in combination with

Handyscope HS6 DIFF with option SafeGround
WiFiScope WS6 DIFF with option SafeGround
the used input channel of the scope must be set to single ended.