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2ch Frequency Module

Frequency Module for RA3100 Data Acquisition System.

SKU RA30-108 Category Tag
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2ch Frequency Module

Description

2ch Frequency Module for A&D RA3100 Data Acquisition System.

Period, rotation speed, pulse count, etc. can be measured for the input pulse signal.
Measurement result data such as period, rotation speed, pulse count, etc., and the input pulse signal can be saved.

The following measurement modes can be selected for the input pulse signal:

  • Period –  Measures the period of the measured pulse. (s: seconds)
  • Frequency – Measure the frequency of the measured pulse. (Hz: hertz)
  • Rotation speed – Measure the rotation speed of the measured pulse. (rpm: rotations)
  • Pulse width – Measures the pulse width of the measured pulse. (s: seconds)
  • Duty ratio – Measure the duty ratio of the measured pulse. (%: percentage)
  • Power frequency – Measures fluctuations in power supply frequency. (Hz: hertz)
  • Range of variation – Measures the range of variation from the centre frequency. (%: percentage)
  • Pulse count – Counts the number of measured pulses within the gate time. (no.)
  • Pulse integration – Integrates the number of measurement pulses. (no.)

Product Features:

  • 2 Input Channels
  • Input Voltage ±1V to ±500V
  • Measuring Signal – 4 signals (2-channel input signal and 2-channel measurement mode signal)
  • 12bit A/D Resolution
  • 1MS/s Maximum Sampling Speed
2ch Frequency Module (RA30-108)
Input Channels 2
No. of Measurement Channels 4
CH1: Meas. mode, CH3: CH1 input volt
CH2: Meas. mode, CH4: CH2 input volt
Input Connectors Insulated BNC
Input Format Unbalanced input (insulation between channels and between channels and chassis)
Coupling AC/DC/GND
Input Impedance 1 MΩ ±1%
Measuring Mode Period, Frequency, Rotation speed, Pulse width, Duty cycle, Power freq., Freq. deviation, Pulse count, or Pulse integ
Input Voltage
Measurement Range (RANGE)  1, 2, 5, 10, 20, 50, 100, 200, or 500 V
Measurement Probability ±3% of RANGE (23±5°C, DC coupling, L.P.F. 300 Hz)
Measurable Range ±1, ±2, ±5, ±10, ±20, ±50, ±10, ±200, or ±500 V
Period Mode
Measurement Range (RANGE) 1, 2, 5, 10, 20, 50, 100, 200 or 500 ms
1, 2, 5, 10, 20, 50, or 100 s
Measurement Probability ±0.5 % rdg (1 ms RANGE)
±0.3 % rdg (2 ms RANGE)
±0.1 % rdg (5 ms RANGE)
±0.05 % rdg (10 ms to 100 s RANGE)
Measurable Range 5 μs to 100 s
Frequency Mode
Measurement Range (RANGE) 2, 5, 10, 20, 50, 100, 200, or 500 Hz
2, 5, 10, 20, 50, 100, 200, or 500 kHz
Measurement Probability ±0.5 % rdg (200 kHz RANGE)
±0.3 % rdg (100 kHz RANGE)
±0.1 % rdg (50 kHz RANGE)
±0.05 % rdg (2 Hz to 20 kHz RANGE)
Measurable Range 0 to 200 kHz
Rotation Speed Mode
Measurement Range (RANGE) 10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000 rpm,
50000 rpm, 100, 200, 500, 1000 krpm
Measurement Probability ±0.05 % rdg
Measurable Range 0 to 1000 krpm
Pulse Width Mode
Measurement Range (RANGE) 1, 2, 5, 10, 20, 50, 100, 200, or 500 ms
1, 2, 5, 10, 20, 50, or 100 s
Measurement Probability  ±0.25 % rdg (1 ms RANGE)
±0.15 % rdg (2 ms RANGE)
±0.05 % rdg (5 ms to 100 s RANGE)
Measurable Range 2.5 μs to 100 s (minimum pulse width 2.5 μs)
Duty Cycle Mode
Measurement Range (RANGE) 100 % (20 Hz), 100 % (200 Hz), 100 % (2 kHz), 100 % (20 kHz)
Measurement Probability ±0.25 % (1 kHz) to ±5 % (20 kHz) of 100 % (20 kHz) RANGE
* ±5% × input frequency/20 kHz
±0.05 % (100 Hz) to ±1 % (2 kHz) of 100 % (2 kHz) RANGE
* ±1% × input frequency/2 kHz
±0.05 % (10 Hz) to ±1 % (200 Hz) of 100 % (200 Hz) RANGE
* ±1% × input frequency/200 Hz
±0.05 % (1 Hz) to ±1 % (20 Hz) of 100 % (20 Hz) RANGE
* ±1% × input frequency/20 Hz
Measurable Duty Cycle Range 0 to 100 %
Measurable Frequency Range  1 kHz to 20 kHz：
100% (20 kHz) RANGE (minimum pulse width 2.5 μs)
100 Hz to 2 kHz：
100% (2 kHz) RANGE (minimum pulse width 5 μs)
10 Hz to 200 Hz：
100% (200 Hz) RANGE (minimum pulse width 50 μs)
1 Hz to 20 Hz：
100% (20 Hz) RANGE (minimum pulse width 500 μs)
Power Frequency Mode
Measurement Range (RANGE)  50 Hz (30 to 70 Hz)
60 Hz (40 to 80 Hz)
400 Hz (360 to 440 Hz)
Measurement Probability ±0.002 % rdg (50 Hz RANGE)
±0.003 % rdg (60 Hz RANGE)
±0.005 % rdg (400 Hz RANGE)
Frequency Deviation Mode
Measurement Range (RANGE) ±50% (centre frequency range 6.6 Hz to 13.2 Hz)
Measurement Probability ±0.05 % rdg
Measurable Range 3.3 Hz to 19800 Hz
Pulse Count Mode
Measurement Range (RANGE) 40000
* Gate time 200 ms, 500 ms, 1 s, 2 s, 5 s, 10 s, 20 s, 30 s, or 60 s
Measurement Probability ±0.003 % rdg
Measurable Range 16.6666 mHz to 200 kHz (minimum pulse width 2.5 μs)
Pulse Integ. Mode
Measurement Range (RANGE) 50, 100, 200, or 500 k
1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, or 2000 M
Measurement Probability ±0.002 % rdg
Measurable Range 5 mHz to 200 kHz (minimum pulse width 2.5 μs)
Threshold
Voltage Range 1 V RANGE： -0.4 to +0.4 V variable (0.01 V increments)
2 V RANGE: -0.8 to +0.8 V variable (0.02 V increments)
5 V RANGE: -2 to +2 V variable (0.05 V increments)
10 V RANGE: -4 to +4 V variable (0.1 V increments)
20 V RANGE: -8 to +8 V variable (0.2 V increments)
50 V RANGE: -20 to +20 V variable (0.5 V increments)
100 V RANGE: -40 to +40 V variable (1 V increments)
200 V RANGE: -80 to +80 V variable (2 V increments)
500 V RANGE: -200 to +200 V variable (5 V increments)
Hysteresis  1 to 10% of RANGE (1% increments)
Low-Pass Filter (LPF) Cut-off frequency: OFF, 300 Hz, 3 kHz, 30 kHz (-1.6 dB ±1 dB)
Characteristics: Secondary vessel
A/D Conversion 12bit A/D Resolution
1 MS/s max. Sampling Rate
Response Speed OFF, 1 to 1000 ms (1 ms increments)
Deceleration Stop Process Function If the pulse input is interrupted. calculates the deceleration state in real-time, and gradually sets the measured value to 0 or overrange.

Supports measurement in the Period mode, Frequency mode, Rotation speed mode, Pulse width mode, Duty cycle mode, Power freq. mode, and Freq. deviation mode.
Pulses per Revolution Pulses / Rev.: 1 to 100
Specify the pulse count per revolution. Available in the Rotation speed mode.
Pulse Polarity Select the polarity of the pulse (positive or negative).
Available in the Pulse width mode, Duty cycle mode, Freq. deviation mode, Pulse count mode, and Pulse integ. mode.
Integrated Auto Reset
(Auto reset)		 Automatically resets the measured data of the Pulse integ. mode.
The count is reset when recording starts (Start) and when the range upper limit is reached (Over).
OFF, Start, Over, Start & Over can be selected.
Integrated Manual Reset (Reset) Manually resets the measured data of the Pulse integ. mode.
Pulse Average Processing Function Number for pulse average: 2 to 4096
Available in the Period mode, Frequency mode, Rotation speed mode, Pulse width mode, Duty cycle mode, Power freq. mode, and Freq. deviation mode.
Smoothing Function OFF, 2 to 100
Available in the Period mode, Frequency mode, Rotation speed mode, Pulse width mode, Duty cycle mode, Power freq. mode, and Freq. deviation mode.
Maximum allowed input voltage ±500 Vpeak
Maximum rated voltage to ground 300 V (DC + AC peak) CAT II (between channels and between channels and chassis)
Withstand Voltage AC 3 kV, 1 minute (between channels and between channels and chassis
Dimensions (mm) 140 (W) × 223 (D) × 20 (H) approx.
Weight 300g approx.
Compliance Standards Safety: EN61010-1､ EN61010-2-030
EMC: EN61326-1, class A

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Freshwater Quarry, Brixham, TQ5 8BA

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