General
Maximum level	± 4 V belastet mit 1 MΩ
Output impedance	50 Ω
Residual offset	≤ 10 mV
Power consumption	< 5 W
EMC standard	NF EN 61326-1 + A1 + A2
Input impedance	2 MΩ // 6 pF

The Metrix MTX1032-C is a differential voltage probe designed as a supplement for analog or digital oscilloscopes. It enables the measurement and display of voltage differences between two points without requiring either point to be connected to ground or earth. This is particularly advantageous when analyzing floating signals, such as those found in electrical installations or industrial control systems. The probe is housed in a robust laboratory housing, which can be operated independently or mechanically connected to MTX oscilloscopes to create a compact measurement solution.

Applications

The MTX1032-C is designed for applications requiring signal measurement without a ground reference. This includes, among other things, network diagnostics, analysis of power electronics, testing of control units in automation technology, and examination of high-voltage installations. Its compliance up to 600 V CAT II makes it suitable for measurements in electrical installations that are not directly connected to protective earth but still need to be operated safely. The probe is designed for use with Class 1 oscilloscopes connected to protective earth.

Features and Equipment in Detail

The probe features two independent differential channels, each connected via a coaxial connector (BNC). This allows simultaneous measurement of two signals with high accuracy. The differential voltage range extends from ± 0.1 V to ± 400 V, with the probe operating at an attenuation of 1/10 or 1/100. The 1/100 attenuation enables measurement of higher voltages, while 1/10 is suitable for more sensitive signals. Common-mode rejection is 80 dB at 50 Hz and 50 dB at 1 MHz, improving measurement accuracy for weak signals or high common-mode content. The outputs are also equipped with BNC connectors for direct connection to oscilloscopes.

Technology Explained Simply

The MTX1032-C measures the voltage difference between two points without requiring a reference point to earth. This prevents short circuits that can occur with conventional probes when a measurement point is connected to ground. The probe operates with a bandwidth of 50 MHz, enabling accurate representation of signals with high frequencies. The rise time is 7 ns, which is important for accurately capturing rapid signal changes. The input impedance is 2 MΩ in parallel with 6 pF, ensuring high input resistance and minimal charge loading. The output impedance is fixed at 50 Ω to ensure optimal signal transmission to the oscilloscope.

Compatibility and Accessories

The probe is designed for use with Class 1 oscilloscopes connected to protective earth. It can be used with coaxial cables and oscilloscope probes, and it can also be operated with banana plugs. Compatibility with Class 1 oscilloscopes ensures safe and reliable measurement. The probe is supplied with a European power cord, enabling power supply via the mains. Power is supplied via the mains, with power consumption below 5 W.

Mounting and Installation

Mounting of the MTX1032-C is achieved by directly connecting the inputs to the measurement points using the provided measurement leads. The outputs are connected to the oscilloscope. The probe can be operated independently or mechanically connected to MTX oscilloscopes to create a compact measurement solution. It is intended for use in laboratory or industrial environments, with an operating temperature range of 0 °C to +50 °C and relative humidity up to 80 % at 31 °C.

Operational Advantages

The MTX1032-C offers high measurement accuracy and reliability when analyzing floating signals. Avoiding short circuits and reducing measurement errors in weak signals or high common-mode content increases the safety and accuracy of measurements. Simultaneous measurement of two channels enables comprehensive signal analysis. Compliance with safety standards IEC 61010-1 and EMC standard NF EN 61326-1 + A1 + A2 ensures the probe can be safely operated in industrial environments. The protection rating IP40 protects against contact with moving parts and splashing water, enabling use in laboratory or industrial environments.

Scope of Delivery

The scope of delivery includes the differential voltage probe MTX1032-C in an MTX-Pack housing, two short BNC cables (each 20 cm), two shielded measurement leads (each 2 m) with BNC and safety connectors (4 mm), two test clips (alligator clips) for the probe, a European power cord, and an instruction manual in five languages. The probe is packaged in a carton.

Safety Standards and Compliance

The probe complies with the safety standards of the Low Voltage Directive IEC 61010-1 and is compliant for applications up to 600 V CAT II. EMC compliance according to NF EN 61326-1 + A1 + A2 ensures immunity to interference and reliability. The protection rating IP40 protects against contact with moving parts and splashing water, enabling use in laboratory or industrial environments. The operating temperature ranges from 0 °C to +50 °C, and relative humidity is up to 80 % at 31 °C.