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Sapphire Instruments
Overview
The SI-9110 high-voltage differential probe differential amplification principle refers to inputting a pair of signals simultaneously into the amplifier circuit, then subtracting them to obtain the original signal.
A differential amplifier is an amplifier composed of two transistors with the same parameter characteristics using direct coupling.
If signals of the same magnitude and phase are input to the two input terminals respectively, the output is zero, thereby overcoming zero drift.
Typical applications of high-voltage differential probes:
Dynamic parameter measurement of SiC and GaN semiconductors
Evaluation of power system switching parameters
Floating ground voltage measurement of high-voltage inverters
Electric & hybrid vehicle electric drive systems
High-energy physics research
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Specifications
SI-9110 Specifications
| Parameter | Specification |
|---|---|
| Bandwidth | DC to 100MHz (-3dB) |
| Attenuation ratio | 1:100 / 1000 |
| Accuracy | ±2% |
| Rise Time | 3.5ns |
| Input Impedance | 4MΩ // 7pF each side to ground |
| Input Voltage | |
| - Category | CAT III |
| - Differential Range | ±140V (DC + AC Peak) and 140Vrms @1/100±1400V (DC + AC Peak) and 1000Vrms @1/1000 |
| - Common Mode Range | ±1400V (DC + AC Peak) and 1000Vrms @1/100 & 1/1000 |
| - Absolute Max. Voltage (Differential or Common Mode) | ±1400V (DC + AC Peak) and 1000Vrms @1/100 & 1/1000 |
| Output Voltage | |
| - Swing | ±1.4 V (into 50kΩ load) |
| - Offset (typical) | ≤±5mV |
| - Noise (typical) | 0.9mVrms |
| - Source Impedance (typical) | 50Ω (for using 1MΩ input system oscilloscope) |
| CMRR (typical) | -80dB @ 60Hz; -50dB @ 1MHz |
| Ambient Operating Temperature | -10 to 40℃ |
| Ambient Storage Temperature | -30 to 70℃ |
| Ambient Operating Humidity | Up to 85% RH. |
| Ambient Storage Humidity | Up to 85% RH. |
| Power Requirements* | |
| - Standard | 4xAA cells |
| - Option | Power leads, Mains adaptor*(6VDC/200mA regulated 9VDC/120mA), USB power cord |
| Length of Input Leads | 30cm |
| Length of BNC Lead | 92.5cm |
| Weight | 500gms |
| Dimension (LxWxH) | 207mm x 83mm x 38mm |
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* Specifications are subject to change without notice.