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The CT4066 is an active differential probe with a high input impedance and low input capacitance. With a 25 MHz bandwidth, it handles a wide variety of measurements ranging up to ±700 V (DC + AC peak), and it is compatible with oscilloscopes from all major manufacturers.
A differential probe measures the voltage difference between two points in a circuit, isolating the signal of interest from ground and rejecting the common-mode voltage shared by both inputs. The CT4066 is built for this work across its measurement span, with three switchable attenuation factors that trade bandwidth against maximum input voltage so the same probe covers low-level and higher-voltage differential measurements.
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 | 25 MHz (50x and 200x attenuation); 15 MHz (20x attenuation) |
| Rise Time | 14 ns for 50x and 200x; 23.4 ns for 20x |
| Attenuation | 20x, 50x, 200x |
| Accuracy | ±2% * |
| AC CMRR | 80 dB @ 60 Hz; 60 dB @ 100 Hz; 50 dB @ 1 MHz |
| Maximum Input Voltage (20x) (DC + AC peak) | ±70 V |
| Maximum Input Voltage (50x) (DC + AC peak) | ±175 V |
| Maximum Input Voltage (200x) (DC + AC peak) | ±700 V |
| Absolute Maximum Rated Input Voltage (each side to ground) | 600 Vrms |
| Input Impedance (Differential) | 4 MΩ // 1.2 pF |
| Input Impedance (each side to ground) | 2 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 | 250 g |
| Dimensions | 195 x 55 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 | IEC 61010-1 CAT II |
Important: Maximum input voltage depends on the attenuation setting: ±70 V at 20x, ±175 V at 50x, and ±700 V at 200x (DC + AC peak). Absolute maximum rated input voltage is 600 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: All specifications apply to the unit after a temperature stabilization time of 20 minutes over an ambient temperature range of 25 °C ± 5 °C.
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
25 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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