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RA2300MKII Data Acquisition System


Measurement by Anyone, Anywhere

A data acquisition system with easy-to-use recording and analyzing functions. The virtual amplifier setting screen, touch panel and large LCD dynamic waveform display shorten and simplify setup and measurement time.


Key Features

160GB HD or 256GB SSD
LCD Dynamic Waveform Display
1 Year US Warranty


Exterior Built Rugged for Field Use

Highly resilient corner pad

  • Excellent vibration resistance for environments with heavy vibrations

Similar dimensions to the RA2300A (including protrusions)

  • Designed for embedding and installation

Strong and rugged handle

  • Easier to carry with large rounded grip

Ash black system control panel

  • Dirt and debris from the field doesn’t stand out on the dark control panel

Measure with High Accuracy in Noisy Environments

  • Proprietary floating circuit provides excellent anti-noise protection in strong magnetic fields
    Ideal for constructing systems that isolate the power supply and account for differences in ground potential
  • Widely used in many industries

Our noise-resistance technology was developed with input from our customers in the railroad, aerospace, construction, civil engineering and steel market.

Simple and Friendly User Experience

Easy setup and confirmation

  • Operation panel design with physical buttons for essential functions
  • Configure detailed settings with touch panel
  • Customizable realistic pen recorder mode

Waveform display always available

  • Waveforms display during configuration to allow for precision adjustments.




Steel Production

Steel Rolling and Cold Rolling Control and Monitoring of Flaw Detection Data
On the production line, long-term measurement data can be saved to a file and waveforms can be checked on recording paper on the spot.

Structural Tests

Durability Testing of Structures
Display and record the correlation between two physical quantities, such as displacement and load, in creep tests (measuring the change in displacement when a specific load is applied) or tensile compression tests (applying a compression or tensile load to a material).

Rail Vehicle Test

Railway Vehicle Testing
Measure strain, oil pressure, atmospheric pressure and acceleration in P/Q measurement and brake performance tests.

Maintenance of HVAC and Distribution Panels

Maintenance and Inspection of Air Conditioning Equipment and Distribution Boards
Measure the operation timing of control relays, changes in temperature and pressure and current/voltage changes in main power systems.

Substation Relay Test

Relay Tests in Substation Equipment
Measure 3-phase signals and trip signals in relay tests for ground faults and short circuits.


Easy to operate and capture data, the Omniace RA2300MKII is a data acquisition system with a large dynamic waveform display and built-in printer for R&D and field use. Equipped with a variety of measurement modes, including long-term recording on a 160 GB hard disk (HD) or 256 GB industrial solid state drive (SSD) and a memory mode capable of capturing high-speed phenomena with excellent reliability, the RA2300MKII is the direct replacement to the RA2300A and Soltec TA220-2300.

Measurement in the Field

Dynamic waveform display

12.1 inch LCD dynamically displays waveforms across 16 channels. Numerical display and waveform division can be configured by application.

Enhanced usability

Shorten setup time with virtual amplifier setup screen and AUTO button

Direct input sensors

Directly input voltage, strain, temperature, vibration, pressure or rotational pulse signal with 11 types sensors inherited from the RA1000 and RA2000 series.

Measurement Modes

Pen Recorder Mode

Pen recorder mode is used to output data to chart paper directly. This mode shows pen-written waveforms on the screen. Amplifiers and chart speed can be set similar to a chart recorder.

  • Paper feed speed: 100 mm/s to 1 mm/min
  • Recording resolution (time axis): 20 to 80 dots/mm
  • Recording resolution (amplitude axis): 8 dots/mm

HD Recorder Mode

HD recorder mode saves data to a 160 GB HD or 256 GB SSD for long term storage. One microsecond sampling is possible when only 1 channel is used. When all 16 channels are used data can be recorded every 10 µs.

Continuous recording 

Data is recorded to two gigabyte chunks. When more than two gigabytes is recorded another chunk is created and recording continues. Previously recorded data can be viewed during measurement. Moreover, this also limits damage caused by file corruption caused by power outages, etc. during recording.

Sample data and peak data 

The Omniace is a digital recorder that converts analog input signals for storage as digital data. Error is introduced to the recorded data due to the relationship between the speed of this AD conversion and the frequency component of the input signal. 

When the Omniace records an input signal, it is possible to record high frequency noise independent of the print speed. Additionally with the HD recorder, data can be stored to a hard disk for analysis.

Sample data

With this method, raw data is faithfully recorded at the designated recording speed (every 10 ms in this example).

Peak Data

Sampling is performed at the maximum sampling speed over the set recording interval (10 ms in the example) and the maximum and minimum values are recorded. This allows compression of data without losing peak values. However, peak data requires twice the recording capacity of the sample data method.

Data Looping

Data can be looped endlessly when recording over uncertain timeframes with unpredictable anomalies. With this function the most recent data is always stored to the hard drive.

Reduce Recording Paper Costs

Two gigabytes can hold two-hundred and nine 30 m recording paper rolls.

Memory Recorder

Record data at high speeds (up to 1μs) to internal memory (2 mW/ch). Memory from unused channels can be used for up to 32mW recording on one channel. Additionally, various measurement conditions can be set with trigger functions.

Data input to memory can be output to recording paper or other storage device.

  • Sample rate: 1 μs to 100 s (depends on the input device)
  • Memory capacity: 2 megawords/ch
  • Memory divisions: 1-128
  • Recording operations
    By partitioning the memory block, it is possible to repeat multiple recordings.
    • One time - Data is recorded until a single partition is full. ※Full use of recordable time on partition
    • Repeated - Data is recorded until all partitions are full.
    • Endless - After recording data over all memory blocks, data is overwritten from the beginning. Recording ends with the stop key.
  • Pre-trigger functions
    • Trigger modes
      • OR - Recording begins when any trigger conditions are true
      • AND - Recording begins when all trigger conditions are true
      • WINDOW - Recording begins when the signal level of the specified channel falls within the set range (IN) or when it deviates from the range (OUT).
    • Pre-trigger (only in memory recorder mode)
      With this function a trigger point is set as a boundary and data leading up to the trigger point can also be recorded. Data can be recorded before and after the trigger point which is set as a percentage of the full memory capacity of the block. The example shows the pre-trigger set to 25%. In this case data before the trigger event will be saved to 25% of the memory capacity of the block.

Multi-Recorder Mode

Multi-recorder mode enables simultaneous recording to paper output, hard drive and memory. 
It is possible to record sudden phenomenon to the memory while recording on the chart paper or to the HDD or SSD.

X-Y Recorder

This mode records input signals from selected channels on an X-Y chart (X-axis: 1 channel, Y-axis: 3 channels). Output can be printed to chart paper at high resolution (1600 dot x 1600 dot).

Replay Display Function

Search large amounts of data quickly
The RA2300 MKII is equipped with functions to search large amounts of data quickly.

Thumbnail Bar

The waveform image of the recorded data for one selected channel can be displayed on the thumbnail bar. This data is easy to read and can be expanded by touching the point you want to see in greater detail.

Jump Search

The four methods below can be used to search data.

  • Time - Jump to a specific time.
  • Address - Jump to a time from the start of measurement.
  • Significant point - Jump to the maximum and minimum values.
  • Event - Jump to the marks made during recording.

Numeric Display of Waveforms

Scale, signal name, numerical value and/or time interval can be displayed for waveforms between the 2 cursors on the replay monitor.

Useful Features

Memory data and measurement conditions are automatically saved to the hard drive when the device is turned off. This information is automatically loaded from the hard drive the next time the device is started so measurement can begin with the same settings.

Easy setup
Up to 4 measurement conditions can be saved. Measurement conditions can be saved for each test, eliminating the need to make complicated configurations each time.

Automated measurements are performed at specified times and intervals.

CSV file conversion
The RA2300MKII can output files in CSV format for processing measurement data with spreadsheet or analysis software. It is equipped with functions to reduce measurement data size or convert large amounts of measurement data at once.


Connecting PCs or Peripherals

PC connection
The RA2300 can be controlled remotely via Ethernet connection to a PC. You can use Unifizer NS3300 (optional software) to record data, configure settings and start recording.

Sharing files with a PC
File sharing with a PC via Ethernet is possible. You can transfer the recorded data to your PC.

High-capacity data storage
File sharing with a PC via Ethernet is possible. You can transfer the recorded data from your PC.

Measures against power failure during long-term recording
When the RS2300MKII is connected to an uninterruptible power supply (UPS), the shutdown procedure will be performed automatically during a power failure. If a power outage occurs during long term recording, the recording operation can be terminated by a signal from UPS and the RA2300MKII can be turned off.
※Optional RS232C unit or remote unit is required

High Speed, High Density Recording

High speed (100 mm/s) and high density (80 dot/mm at 25 mm/s) recording is possible. Easily change the division of the waveform record and the width of the recording area, etc.

  • Paper feed speed: 100 mm/s to 1 mm/min
  • Recording resolution: 10 to 80 dots/mm (time axis), 8 dots/mm (voltage axis)

High speed, high density recordings

Layout on recording paper

Layout on Recording Paper

Event Signal Display

Event Signal Display

Arithmetic Operation FFT Unit (RA23-751)

This unit performs arithmetic processing (interval statistic calculation, function calculation, FFT analysis) on the data stored in memory, HDD or SSD and displays the results in table, time axis waveform or frequency formats.

Experiments that required a data recorder for measurement and analyzer for analysis can be done with the Omniace alone.

Flow chart of arithmetic operations and FFT unit functions

Arithmetic Operation and FFT


Easy "Pen Recorder" Mode
Easy operation of the “pen recorder” mode is realized by virtual amp. setup display and touch panel.
Easy measurement of a “pen recorder” is without complicated settings.
Numerous features in Playback Mode
Various search functions are available for finding certain points in large data easily after long-term recording.
Fast search using a thumbnail bar (displays all recorded data of selected one channel) and jump search (max/min, time, etc.) available.
Improved Vibration Resistance (RA2300MKⅡ-S) with its internal SSD
The RA2300MKⅡ-S can withstand transportation in vehicles with rigid suspension as well as the harsh environmental conditions on land and via sea transport-- up to 2G acceleration
Standard: IEC60068-2-64
Display Input Waveform on a Large Screen
A large 12.1″ LCD for better visibility of measured data.
Horizontal and vertical waveform scroll is selectable for RA2800A; this function increases visibility.
Long-term HDD Recording
Long-term & high speed data recording direct to internal HDD/SSD.
Standard LAN & USB Ports
LAN (100BASE-TX) for data communication and USB for external storage devices (USB memories) are standard interfaces.
Computation · FFT Unit Equipped Standard on RA2300MKⅡ/-S. Performs four arithmetic operations, interval statistical calculation, function operation and FFT analysis.


Dynamic Waveform Display


The RA has a large 12.1 inch LCD and displays dynamic waveforms.


Dynamic Waveform Display

Easy Operation with Rich Features

Set-up displays with the jog dial which makes input amplifier settings easily understood. Measuring conditions can be modified while monitoring waveforms on the large LCD display. The input amplifier can be automatically tuned by the “auto” function button.

Touch Panel

Touch Panel

User Selectable Measurement Modes

Users can easily select from five (5) Measurement Modes - Pen Recorder mode for real time strip chart recording, HD Recorder mode for long term recording of data to HDD, X-Y Recorder mode for displaying/recording X-Y correlation of two signals, a Multi Recorder mode captures transients while recording steady-state signals, and a Memory Recorder mode for recording fast events.

Pen Recorder Mode


Records steady-state and transient events simultaneously.  Chart printing and recording to HDD and Memory can be simultaneously performed in this mode. A steady-state signal can be printed or recorded on the HDD while the system captures high-speed transient events to memory.

Memory Mode


Capture Complete Signals with Sample Data and Peak Data

When measuring data with the RA Series, you can select from the recording data format used by most recording devices (sample data) and a format that samples data at high speed and records significant points (peak values). When recording with peak data, you can record high frequency noise regardless of paper feed speed. An example of the sample data and peak data recording formats at 10 ms sampling is shown below.

Sample Data Format

Sample Data Format

Data is recorded every 10 ms (designated recording speed). This method faithfully records the raw data every 10ms.

Peak Data Format

Peak Data Format

Data is sampled at the maximum sampling speed over a set recording interval (10 ms in this case) and the maximum and minimum values are recorded. This allows compression of data without losing peak values. Peak data requires twice the recording capacity.

High Speed and High Resolution Recording 

High speed and high resolution (80 dots/mm at 25mm/s) recording is available. Customizable waveform division & printing size with paper-feed speed of max 100mm/s.

Channel Mark


Useful Functions

Easy search of large data sets.

This function displays a waveform image (one selected channel) of recorded data on a thumbnail bar. It allow users to see whole waveform image easily and to enlarge sections by touch scaling.

Touch to Zoom

Thumbnail Bar



Display 12.1 inch TFT color LCD (1024 x 768) with touch panel
Channel Number 16ch (8 slots) + 16 inputs logic (option)
Memory Capacity 2MW/ch (32MW when using 1ch)
Sampling Speed Max. 1μs (1MSa/s)
Printer Printer Head: Thermal recording with thermal head
Chart Speed: 100mm/s to 1mm/min.
Recording Device HD: 160GB, SSD : 256GB (RA2300MKⅡ-S)
Applicable to external USB memory, HD and MO drive using USB port
Interface Ethernet (100BASE-T), USB x 2 : standard
RS-232C : option
Measuring Mode Memory Recorder: Recording high speed phenomenon to memory with trigger
HD Recorder: Recording input signals directly to internal HD or SSD
Pen Recorder: Recording input signals directly on chart paper
Multi-recorder: Recording on chart paper, HD and Memory simultaneously
X-Y Recorder: Displaying and recording the correlation of 2 signals with X-Y
Operation Environment Temperature 5 to 40℃, Humidity 35 to 80%RH (no condensation)
Power Supply 90 to 264V AC, 50 to 60Hz
Power Consumption 400VA or less (at maximum load condition)
Dimensions W 400 (±2.0) x H 171 (±2.0) x D337 (±2.0) mm with handle folded down



Input Amplifiers

Item Model Description
2-CH High Resolution DC Amp. AP11-101 Input: ±100mV to ±500V, A/D resulution: 16bit, Sampling 10μs
2-CH FFT Amp. AP11-102 Antialiasing filter: 72dB/OCT, with power supply for sensor
2-CH High Speed DC Amp. AP11-103 Input: ±100mV to ±500V, A/D resulution: 12bit, Sampling 1μs
2-CH AC Strain Amp. *1 AP11-104A Frequency characteristic: 2KHz, Bridge voltage: 5KHz
Event Amp. AP11-105 Input: 8 logic (Voltage/Contact)
2-CH TC/DC Amp. *2 AP11-106A Input: R, T, J, K, W (±100mV to ±500V), A/D resolution: 15bit
2-CH TC/DC Amp. *2 AP11-107 Input: R, T, J, K (±100mV to ±50V), A/D resolution: 14bit
F/V Converter *2 AP11-108 Input: 1Hz to 10KHz
2-CH Vibration/RMS Amp. AP11-109 Input: ±100mV to ±500V, Sampling: 10μs, with power supply for sensor
2-CH DC Strain Amp. AP11-110 Input: 800με to 20Kμε (BV=5V), 2Kμε to 50Kμε (BV=2V)
2-CH Zero Sppression Amp. AP11-111 Input: ±100mV to ±500V, A/D resulution: 16bit, Sampling 10μs

*1: AC bridge power supply (RA23-141) is required.
*2: AP11-106A, AP11-107 and AP11-108 do not comply with RoHS directive of CE.

Optional Interface Units

Item Model Description
Remote Unit RA23-144 With cale (0311-5251: 1.5m, I/O connector: 28pin, One side w/o connector
Event Unit RA23-145 Event Unit + Event Cable w/o connector (0311-5252)
Event Unit A RA23-145A Event Unit + Interconnecting cable for event (RA23-127)
RS-232C Unit RA23-142
AC Bridge Power Supply Unit RA23-143 It is required when using AP11-104A


Optional Software

Item Model Description
Unifizer NS3300 Applicable to Windows 7 (32bit)
Model Continuity

Did you know?

If you need to record signals on paper, you need a Chart Recorder.
And if you are looking for a chart recorder, the best is Omniace.
Omniace is now A&D.

The Story of Omniace

Sanei Instruments has manufactured Electromagnetic Oscillographic Recorders and Pen Oscillographic Recorders for 60 years.  Sanei developed the Omniace to print signals on thermal paper and has been valued by our customers for 30 years.  A&D acquired this technology and designed and released the new Omniace RA2300MKII.

Compatible with Omniance RA2300A Accessories

The new MKII can use 11 input amplifiers as well as communication units, AC bridge power supplies, recording paper and storage box designed for the older model.