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The Cal Test Electronics CT4071 is a 50 MHz active differential probe designed with a high input impedance and low input capacitance. It accepts measurements ranging up to ±3500 V (DC + AC peak) and is compatible with oscilloscopes from all major manufacturers, delivering its output through an insulated BNC cable into a standard 1 MΩ oscilloscope input.
A differential probe measures the voltage between two points in a circuit rather than between a single point and ground, allowing an engineer to observe signals that are not referenced to earth. The CT4071 supports a wide variety of such measurements across its four selectable attenuation settings, with the maximum measurable voltage scaling from ±350 V at 100x up to ±3500 V at 1000x.
ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois.
| Specification | Value |
|---|---|
| Electrical Characteristics | |
| Bandwidth | 50 MHz |
| Rise Time | 7 ns for 200x, 500x, & 1000x; 14 ns for 100x |
| Attenuation | 100x, 200x, 500x, 1000x |
| Accuracy | ±2% * |
| AC CMRR | 80 dB @ 60 Hz; 60 dB @ 100 Hz; 50 dB @ 1 MHz |
| Maximum Input Voltage (100x) (DC + AC peak) | ±350 V |
| Maximum Input Voltage (200x) (DC + AC peak) | ±700 V |
| Maximum Input Voltage (500x) (DC + AC peak) | ±1750 V |
| Maximum Input Voltage (1000x) (DC + AC peak) | ±3500 V |
| Absolute Maximum Rated Input Voltage (each side to ground) | 2500 Vrms |
| Input Impedance (Differential) | 54 MΩ // 1.2 pF |
| Input Impedance (each side to ground) | 27 MΩ // 2.3 pF |
| Output Voltage Swing | ±8 V (driving 1 MΩ oscilloscope input) |
| Offset (typical) | ±5 mV |
| Noise (typical) | 2 mVrms |
| Source Impedance | 50 Ω |
| Power Supply | 9 V power adapter (included) |
| Mechanical Characteristics | |
| Weight (probe only) | 280 g |
| Dimensions | 240 x 80 x 30 mm |
| BNC Cable Length | 100 cm |
| Input Leads Length | 55 cm each |
| Environmental Characteristics | |
| Operating Temp/Humidity | 0°C to 50°C / 10% to 85% RH |
| Storage Temp/Humidity | -30°C to 70°C / 10% to 90% RH |
| Pollution Degree | Pollution Degree 2 |
| Safety Specifications | |
| Safety Standard | IEC 61010-1 CAT II |
Important: Absolute maximum rated input voltage: 2500 Vrms (each side to ground).
Important: Accuracy (±2%) is based on a DMM with 10 MΩ input impedance.
Important: Meets IEC 61010-1:2010 CAT II safety standard.
Important: Maximum input voltage varies by attenuation setting: ±350 V (100x), ±700 V (200x), ±1750 V (500x), ±3500 V (1000x), DC + AC peak. Observe the Maximum Input Voltage Derating Curve at higher frequencies.
This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order.
ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Cal
Condition
Factory New
Manufacturer
Cal Test Electronics
Diff_probe_freq
50 MHz
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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