Tektronix Differential Preamplifier Oscilloscope Module 1 MHz, Selectable Gain 100/10/1/0.1, ADA400A

Tektronix ADA400A Differential Preamplifier Oscilloscope Module is a high-performance instrument designed to extend the capabilities of Tektronix oscilloscopes. Featuring a 1 MHz bandwidth and selectable gain settings of 100, 10, 1, or 0.1, ADA400A enables precision measurements of very low amplitude voltages, as small as 5μV. This differential preamplifier module is engineered to handle signals that are not ground referenced, facilitating direct oscilloscope probing without the need to add grounding points on the device under test (DUT) and thereby avoiding current loops and measurement disturbances.

The device offers a typically 100 dB common mode rejection ratio (CMRR) from DC to 10 kHz, ensuring high fidelity in noisy environments. Its selectable low-pass filters provide bandwidth limits at 100 Hz, 3 kHz, 100 Hz, or full bandwidth at 1 MHz, significantly reducing noise from digital switching supplies and line frequencies. The module includes adjustable differential offset to compensate for transducer bridge biases and galvanic potentials in the test setup.

Notably, ADA400A includes an 'infinite impedance' mode available in the two highest gain settings, allowing accurate measurement of signals from sources with high impedance. The module conveniently receives power for the probe integral via the TEKPROBE™ BNC interface, making integration with Tektronix oscilloscopes seamless.

Designed for compatibility with a broad range of Tektronix oscilloscopes including TDS400, TDS5000, TDS600, TDS500, TDS7000, and TDS700 series, this preamplifier module is suited for laboratory, industrial measurement, and electronic design applications requiring precise low-level differential signal analysis.

The module provides sensitivity down to 10μV/div for precise signal acquisition. Selectable gain options of 100, 10, 1, and 0.1 adapt to varying signal levels. Low-pass filters at 100Hz, 3kHz, 100Hz, and full 1 MHz bandwidth minimize noise interference.

Integral probe power via TEKPROBE™ BNC simplifies setup and operation. High CMRR of 100 dB from DC to 10 kHz ensures clean differential measurements. Infinite impedance mode enhances accuracy with high source impedance signals.

Adjustable offset compensation accommodates transducer and setup-specific biases. Eliminates need for additional grounds on DUT, reducing measurement errors. Compatible with a wide range of Tektronix oscilloscope series.

This module is an essential accessory for professionals engaged in high-precision electronics testing, research, and development, offering reliable low-level signal amplification and noise rejection capabilities. Explore the Tektronix range of Oscilloscope Modules and accessories at EnvMart for comprehensive test solutions.