Yokogawa 701281 2-Channel Frequency Module

Overview

The Yokogawa 701281 2-Channel Frequency Module provides comprehensive pulse and frequency measurement capabilities for the DL850 and SL1000 series data acquisition systems. With nine measurement modes, real-time digital filtering, and an exceptional 1 µs update rate, this module enables precise analysis of rotational devices, encoder pulses, and frequency monitoring across automotive, robotics, and industrial control applications.

Key Features

• 9 measurement modes for frequency, RPM, period, duty cycle, and more
• Frequency measurement range: 0.01 Hz to 500 kHz
• Ultra-fast 1 µs (1 MHz) update rate for real-time measurement
• 2-channel input with expandable configuration up to 16 channels
• Real-time digital filtering with smoothing and pulse averaging
• Direct recording of measured results without rescaling
• Encoder pulse input up to ±42 V
• AC power measurement up to 300 V with isolation probe 700929
• Deceleration and stop prediction for braking applications
• LED indicators for pulse input confirmation and overrange detection
• Chatter elimination support for mechanical contacts

Applications

• Automotive engine and transmission RPM analysis
• Motor load characteristics and rotation fluctuation measurement
• Robot encoder pulse and motor control
• Precision power supply frequency monitoring (50/60 Hz)
• Office equipment paper feed and optical device analysis