RL-C21: Vibration Control and Data Acquisition System
A powerful multi-purpose vibration control and data acquisition system for vibration testing, data analysis, and sensor calibration with a modular scalable architecture.
The device has an LCD screen and a set of digital inputs and outputs allowing for autonomous operation.
RL-C21 is a state-of-the-art vibration control system for electro-dynamic shakers. The system is distinguished by simplicity, reliability and high safety standard.
RL-C21 vibration controller has a modular scalable architecture, which allows the user to get from 1 to 32 input channels. The configuration of RL-C21 system is flexible: it is determined by the user and can be modified at any time.
The most innovative techniques of digital signal processing are embedded in the system. The PC is not used in the control loop, all calculations and safety checks are run by a DSP directly in the controller. This feature provides the highest level of shaker protection.
RL-C21 enables running multishaker tests. The system successfully controls two- and three-axes shakers, as well as vibration shakers with up to 6 degrees of freedom.
Galvanic isolation of the input channels is an advantage of RL-C21, which sets it apart from the existing analogs and allows effectively protecting input chains from breaks.
Flexible channel configuration. Fully determined by the user and tailor-made for your needs.
Scalability. The system can be easily scaled up to 8 devices in one network, allowing you to get up to 32 input and 8 output channels. Frequency range: 0.1 to 35000 Hz and sample rate: 1290 Hz-108 kHz.
High level of shaker protection. All calculations and safety checks are run by a DSP directly in the controller.
MEMS & MIMO capabilities. The system can simultaneously control up to 8 shakers in up to three axis and 6 degrees of freedom.
Break protection. Galvanic isolation in the input chains allows effectively protecting input chains from breaks.
Calibration options. Calibrate transducers, shakers, and microphones — all in one box.
RL-C21 is used with a specialized vibration test software package TestUp & SignalUp
1 ÷ 32
Input type / Sensor type
IEPE, TEDS, linear, charge,
displacement, velocity, force,
Analog, digital high-pass and low-pass filters
≥ 120 dB
< 20 µV
≤ -100 dB
1 ÷ 8 control channels, Up to 8 COLA channels
Relative frequency error
Analog filters, digital high-pass and low-pass filters
+5 ÷ +50 °C
Resonance Search and Tracking Dwell
Sine on Random, Random on Random, Sine and Random on Random, Sine on Sine
Field Data Replication
Shock Response Spectrum
Transient Time History
Vibration tests according to ISO, DIN, IEC, and others in Aerospace, Automotive, Telecom and other industries
Tests of serial production
Research and Development
Where can I get a software update?
On our website in the Downloads section. Please mind that you need to log in to download the updates. You can access the demo software version without logging in.
During start-up the signal from the sensor is “too great/small”.
First of all, check the correctness of the sensor type settings (ICP, charge or linear) in TestUp software, and the sensor sensitivity. If the problem is still there – no signal, or it is too small, check the integrity of the sensor cable. If the problem has not been solved, check the ICP power current (if you are using an ICP sensor) or connect the sensor to a different channel.
There is high noise level on the shaker, caused by the product, which is operating on it outside the testing zone. How do I not take it into consideration during control?
If it is a Sine test, you should set the control algorithm to “Synchronous detector” for the control channel. In case of Random test, select the “In the task spectrum” parameter in the drop-down menu “RMS is calculated in…” of the “Control” tab.
Can antivirus software interfere with the testing procedure?
We do not recommend using antivirus programmes on your PC when working with RL-C21. As the PC communicates with the devices through the network, the antivirus software may sometimes block the data transfer. In case the antivirus software is installed and cannot be deleted, we recommend adding TestUp and the folder, to which it is installed, to the list of antivirus exceptions, or disable the protection while using the controller.
Can I save channel and shaker configurations?
The settings are saved to separate databases, and, having specified them once, you are able to use them for all subsequent tests.
TestUp does not see the device. There is a message saying that the device has not been found.
Check the connection of Ethernet cable to the device and PC. Check if the device is loading. The words “RL-C21” should appear on the screen, and if you hold the “Stop” button for more than 3 seconds, it will display the information about the IP-address, serial number and the subnet mask. For a detailed step-by-step guide, consult this Knowledge article.
If the device IP-address is 0.0.0.0, and there is a [D] symbol next to the IP-address, hold the “Stop” button for about 1 minute to reboot the controller and reset factory settings.
Another thing to check in case TestUp does not see the device is whether Windows Firewall is enabled and whether there is an antivirus installed. They should be disabled.
Sine Test Profile
In this video you will learn how to create a Sine test profile for the vibration control system RL-C21
Random Test Profile
In this short video, you will learn how to create a Random test profile in the RL-C21 vibration control system.
Shock Test Profile
In this short video, you will learn how to create a Shock test profile in the RL-C21 vibration control system.
Mixed Test Profile
In this short video, you will learn how to create a mixed test profile in the RL-C21 vibration control system.
In this short video you will learn how to create channels settings for RL-C21 vibration control system.
In this short video you will learn how to create shaker settings in RL-C21 vibration control system.
Introduction to graph settings in RL-C21 vibration control system.