The PINTECH DP-235 is a high-voltage differential active oscilloscope probe with 2600V range, 35MHz bandwidth, and 50X/500X attenuation, suited for engineers, technicians, and lab users measuring motor drives, power electronics, and other high-voltage differential signals with standard BNC oscilloscopes.
Recommended For
- Engineers and technicians troubleshooting motor drives, inverters, or other floating high-voltage nodes with a standard BNC oscilloscope, where a differential probe is needed to measure between two non-ground-referenced points safely.
- Bench users who already own a conventional oscilloscope and want to add high-voltage differential measurement capability without changing scopes, especially when the scope has a standard BNC input.
- Power electronics labs checking switching waveforms, bridge legs, or mains-referenced sections where common-mode voltage rejection matters more than very high RF bandwidth.
- Repair and validation workflows on industrial or lab equipment where expected signals are in the low-MHz range and users benefit from selectable attenuation for fitting higher voltages into a scope's input range.
Real-World Use Scenarios
- Troubleshooting switch-mode power supplies or PFC stages: an engineer can probe across primary-side switching nodes or floating sections without tying the oscilloscope ground into the circuit, and the typical result is a cleaner, safer view of high-voltage waveforms than using two standard probes and math subtraction.
- Checking inverter, VFD, or motor-drive outputs: users measuring phase-to-phase or high-side gate-drive waveforms can capture signals that are not ground-referenced, with the usual experience being that motor-control switching behavior is visible directly on a standard BNC oscilloscope instead of requiring a specialized isolated scope.
- Measuring voltage across a current-shunt in a converter or motor driver: when someone wants differential voltage directly across the shunt, the likely outcome is better visibility of the real drop than subtracting two scope channels, especially when users want to avoid losing a second channel or running into math-resolution limits.
- Servicing offline AC or mains-referenced power electronics: a technician trying to compare line-related waveforms at two live points can use the probe to convert that floating differential signal into a scope-friendly BNC output, and in practice this helps avoid the common mistake of grounding one side of a live circuit through a standard probe.
- General bench debugging on a standard oscilloscope with BNC inputs: a user who needs occasional high-voltage differential measurements can add this probe instead of replacing the scope, and the likely experience is straightforward setup for floating measurements as long as the signal stays within the probe’s intended bandwidth and voltage range.
Spec Summary
| Attribute | Value |
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| Best For | High-voltage differential measurements and converting two-point (floating) signals to ground for oscilloscopes, meters, and data acquisition; suited to motor and other high-voltage circuits requiring up to 2600V range, 35 MHz bandwidth, and selectable 50X/500X attenuation |
|---|
| Package Contents | Differential probe ×1, probe hook ×2, alligator clip ×2 — basic accessories for making insulated/differential connections |
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Reference Q&A
Q: Should I choose the PINTECH DP-235 or a 100 MHz high-voltage differential probe?
A: Choose the PINTECH DP-235 when your main need is high-voltage measurement on motor drives, power electronics, inverters, or general floating-node troubleshooting where 35 MHz bandwidth is enough and 2600 Vp-p range matters more than edge fidelity. Choose a 100 MHz-class differential probe when you need cleaner visibility on faster switching edges, more harmonics, or gate-drive detail. In practice, the trade-off is straightforward: the DP-235 is positioned for mainstream high-voltage work, while higher-bandwidth probes are the better fit for faster transient analysis.
Q: Is the PINTECH DP-235 better than using two standard passive probes and math on the oscilloscope?
A: Yes, the DP-235 is the better choice when you need a true high-voltage differential measurement. A dedicated differential probe is designed to convert a floating two-point signal into a scope-safe ground-referenced signal through one BNC connection. Compared with using two passive probes plus channel math, it is usually the more practical option for higher-voltage measurements because it avoids tying measurements to two separately matched probes and preserves a setup intended for differential work. Two passive probes with math can still be acceptable for low-risk bench checks, but the DP-235 is the clearer choice for repeated high-voltage troubleshooting.
Q: Should I buy the DP-235 or move up to a higher-voltage model like a 7 kV differential probe?
A: Buy the DP-235 if your expected differential voltage stays within its 2600 Vp-p range and you want a simpler fit for typical inverter, motor-control, and power-stage measurements. Move up to a 7 kV-class probe when your application has higher bus voltage, more headroom requirements, or you work across a wider mix of industrial power systems. The main trade-off is not general quality but operating range: the DP-235 fits moderate high-voltage work, while higher-voltage probes provide extra margin for more demanding systems.
Q: For motor drives and VFD work, is the DP-235 enough or should I get a faster probe?
A: The DP-235 is often enough when your priority is safely observing high-voltage waveforms in motor drives, VFD outputs, and similar power circuits, because these use cases typically prioritize voltage range and differential measurement capability first. A faster probe becomes the better choice when you need to inspect switching transitions in more detail, compare device behavior at the edge level, or capture more high-frequency content. In short: choose the DP-235 for routine power-stage diagnostics, and choose a faster model for deeper switching analysis.
Q: Should I choose the DP-235 or a lower-voltage, higher-bandwidth differential probe?
A: Choose the DP-235 when measurement voltage is the limiting factor and you need substantially more high-voltage headroom. Choose a lower-voltage, higher-bandwidth differential probe when your circuits are well below that voltage range and your main goal is better visibility into fast digital or switching behavior. This is a classic trade-off in differential probes: the DP-235 favors voltage capacity for power work, while lower-voltage high-bandwidth models favor signal-detail work.
Q: Who is this probe suitable for?
A: This probe is suitable for engineers, technicians, and advanced hobbyists who need to measure high-voltage differential signals on grounded oscilloscopes. It is a better fit for power electronics, motor drives, inverters, and switching circuits than for basic low-voltage bench work. Its 2600 V rating and differential design are useful when neither test point is at ground, but its 35 MHz bandwidth makes it a general-purpose high-voltage probe, not a high-speed signal integrity probe.
Q: Will it work with my oscilloscope?
A: It should work with most oscilloscopes that have a standard BNC input, which makes it broadly compatible across brands. That said, compatibility is physical rather than smart-integrated: unlike some premium probes, this model does not appear to offer auto-scaling or auto-power interfaces, so you may need to set attenuation manually on the scope and use the included adapter/power arrangement.
Q: Is 35 MHz enough, or should I buy a higher-bandwidth differential probe?
A: 35 MHz is enough for many power-electronics and motor-control tasks, including general switching waveform checks and floating high-voltage measurements. It is not the best choice if you need fast edge fidelity, detailed switching transients, or higher-frequency digital and RF work. In short: buy this for high-voltage general diagnostics, not for high-speed precision analysis.
Q: Is a differential probe like this better than using two standard probes and math subtraction?
A: Yes, for real high-voltage floating measurements, a dedicated differential probe is the safer and more appropriate choice. Two standard probes plus channel subtraction can work for some lower-risk cases, but it depends heavily on grounding, common-mode voltage, and oscilloscope setup. A purpose-built differential probe is the better buying decision when you need safer measurement across two non-ground-referenced points.
Q: What are the main trade-offs versus a premium differential probe from Tektronix, Keysight, or Siglent?
A: The main advantage of this PINTECH model is practical high-voltage capability with broad BNC compatibility in a simpler package. The trade-offs are lower bandwidth than many premium models, fewer signs of integrated scope features, and less evidence of premium ecosystem support such as auto-probe interfaces or advanced accessories. It is the better value choice for routine high-voltage bench work, while premium probes are better for faster signals, tighter integration, and more demanding measurement workflows.
Q: Who is this kind of differential probe suitable for?
A: It is mainly suitable for bench-scope users who need to measure floating or non-ground-referenced voltages in power electronics, such as motor drives, inverters, and switch-mode power circuits. Based on the product data, this model is a high-voltage active differential probe with 35 MHz bandwidth, 50X/500X attenuation, and BNC output, so it fits general high-voltage troubleshooting better than low-voltage precision work.
Q: Is this a good choice for measuring motor drives, inverters, or mains-referenced switching circuits?
A: Yes, it is a reasonable fit for that use case. Community discussion around differential probes repeatedly points to motor drives, VFDs, generators, and switching power electronics as common reasons to buy one. This probe’s stated high-voltage rating and differential measurement design make it more appropriate for those jobs than a standard passive probe, provided its voltage and bandwidth limits match the circuit being tested.
Q: What are the main trade-offs of buying this probe instead of a higher-end differential probe?
A: The main trade-off is capability versus cost. From the product data, this model is focused on moderate bandwidth and high-voltage access: 35 MHz bandwidth, 50X/500X attenuation, and typical accuracy of ±2%. Reddit and YouTube discussions suggest buyers often compare differential probes on bandwidth, noise performance, attenuation options, input range, and common-mode rejection. That means this type of probe is more suitable for general power-electronics measurement than for high-speed digital analysis or very low-noise measurement.
Q: Can this replace using two standard oscilloscope channels in A-B math mode?
A: For many high-voltage floating measurements, yes, it is the better tool. Repeated Reddit discussion treats a real differential probe as the safer and more purpose-built option when the signal is not ground referenced. A-B math with two passive probes can be a workaround, but it is usually seen as less ideal for safety, convenience, and measurement quality.
Q: Is this worth buying if I mostly measure low-voltage or ground-referenced signals?
A: Probably not. For mostly low-voltage, ground-referenced work, a standard passive probe is usually simpler and more cost-effective. This product’s specifications and the surrounding community discussion both point to its value being in high-voltage differential measurement, not routine low-voltage scope use.
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