What is opMux 3.0?
opMux 3.0 is a multi-channel ultrasonic unit in which channels have dedicated pulser and receiver paths, allowing a control system to select transmitting and receiving channels for automated ultrasonic measurements.
Multi-channel ultrasound • routing • automation
opMux 3.0 Multi-Channel Ultrasonic Multiplexer
opMux 3.0 is a configurable multi-channel ultrasonic pulser/receiver and switching platform for automated NDT, laboratory and OEM measurement systems.
Channels have dedicated pulser and receiver paths, while the controller selects the transmitting and receiving channels for each measurement. This supports repeated probe sequences, pulse-echo arrangements and transmission measurements without manually reconnecting transducers.
4–35 chconfigurable family
400 Vpulse amplitude up to*
0.1 µspulse-length resolution
115200serial baud rate
* Maximum pulse amplitude depends on the connected load.
Fact extraction ready
Key Technical Specifications
| Product type | Multi-channel ultrasonic pulser/receiver and electronic multiplexer |
|---|---|
| Channel configurations | 4–35 channels; current family includes 4, 8, 11, 12, 16, 19, 32 and 35 |
| Channel architecture | Each channel has a dedicated pulser and receiver path |
| Active transmitter | One transmitter active at a time |
| Tx / Rx selection | Receiving channel can be selected independently from transmitting channel |
| Transducer frequency | Family described for resonant transducers 0.5–25 MHz; published transmitter table specifies 0.5–20 MHz |
| Pulse amplitude | 0 (off) to 400 V; maximum depends on connected load |
| Pulse amplitude control | Serial control or optional analogue 0–10 V control |
| Pulse length | 0.1–6.3 µs, 0.1 µs resolution |
| Pulse fall time | ≤ 25 ns |
| Output impedance | < 1 Ω |
| Receiver amplifier bandwidth | 1–15 MHz (−3 dB) |
| Receiver gain | 20 dB |
| Maximum receiver input | ±200 mV |
| Receiver output | ±2 V |
| Input impedance | 50 Ω at 10 MHz |
| Control interface | Serial communication, 115200 baud, DB9 female |
| Sequence memory | Programmable measurement/channel sequences |
| Options | Analogue input/output, relay outputs and digital input depending configuration |
Channel sequencing
A measurement sequence can select different transmitting and receiving channels from one step to the next. That makes opMux suitable for multi-probe inspection stations and automated measurement routines.
Pulse-echoTransmissionMulti-probeOEM
Available multi-channel configurations
Current opMux 3.0 family variants include:
4 channels8 channels11 channels12 channels16 channels19 channels32 channels35 channels
Other configurations can be engineered where the application requires a different channel count, connector layout or integration concept.
Where opMux fits in an ultrasonic system
Transducers
Multiple ultrasonic probes or measurement positions are connected to the multiplexer.
opMux 3.0
The controller selects the required transmitting and receiving channel for each step in the measurement sequence.
Acquisition & analysis
Use with OPTEL acquisition electronics, scanners and software or integrate the unit into a custom OEM control architecture.
Related: opCard PCIe acquisition · opBox ultrasonic instruments · ultrasonic scanners.
Frequently asked questions
How many channels are available in opMux 3.0?
The current product family includes configurations from 4 to 35 channels, including 4, 8, 11, 12, 16, 19, 32 and 35 channel versions.
Can opMux transmit and receive on different channels?
Yes. Only one transmitter is active at a time, but the selected receiving channel can be different from the transmitting channel, supporting pulse-echo and transmission-style system architectures.
What pulse settings are available?
The published opMux 3.0 technical data specifies pulse amplitude from 0 to 400 V, load dependent, and pulse length from 0.1 to 6.3 microseconds in 0.1 microsecond steps.
What transducer frequencies can opMux 3.0 work with?
OPTEL describes the family for ultrasonic transducers with resonant frequencies up to 25 MHz; the published transmitter technical table specifies a 0.5–20 MHz operating range. Final suitability should be verified for the selected transducer and load.
Custom ultrasonic development
Need a configuration for a specific inspection problem?
OPTEL can evaluate the measurement physics, transducer arrangement, electronics, channel routing and software before a full system is built.
Start with a feasibility studyContact OPTEL