Q Series Guide

Compare QMini, Q1S, Q1 and Q2

Ommatidia’s measurement platforms cover different combinations of laser vibrometry, Laser RADAR metrology, monitoring style and measurement density. This page brings the four systems into one customer-facing reference so you can compare where each platform fits best.
QMini focuses on single-point laser Doppler vibrometry. Q1S is designed for fixed structural monitoring. Q1 combines portable field deployment with 128-beam vibrometry and metrology. Q2 is the advanced fit for dense dynamic analysis, autofocus metrology and SpeedSync single-point operation.
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Explore application briefs
Q2 laser radar measurement platform
Q2 laser radar measurement platform
Comparison focus Workflow fit, measurement density, field deployment, software outputs and SpeedSync expansion
SpeedSync note QMini is built around SpeedSync heads, and Q2 supports single-point operation with a SpeedSync head.
QMini single-point laser Doppler vibrometer
QMini

Modular single-beam LDV station

A practical entry point for high-frequency, high-speed and long-range single-point vibrometry. SpeedSync heads extend the measurement range and make QMini useful in lab, field and DAQ-connected setups.

1-300 m with SpeedSync 62 MHz bandwidth DAQ I/O ready
Q1S structural health monitoring laser radar system
Q1S

Fixed infrastructure monitoring

A 128-beam Laser RADAR for bridges, viaducts, buildings and civil assets where repeatable positioning, deflection curves and long-term displacement tracking matter.

128 parallel beams 0.5-50 m IP54 field operation
Q1 portable laser radar and vibrometry system
Q1

Portable structural dynamics and metrology

A portable 128-beam platform for field campaigns where structural dynamics, stand-off displacement evidence and micron-level Laser RADAR metrology need to travel together.

128 beams 30 degrees x 360 degrees scan Metrology + vibrometry
Q2 dense multi-point laser vibrometry and metrology system
Q2

3D vibrometry, vectors and strain-ready outputs

A dense multi-point platform for micro-scanning metrology, 3D velocity reconstruction, modal maps and strain-oriented diagnostics on complex parts and structures.

65 simultaneous channels 1,300 points/line · 20 sequential elevation steps SpeedSync compatible

Laser Vibrometer and Laser RADAR Comparison

Use this view to compare the four platforms across measurement style, deployment model, geometry capability, data outputs and SpeedSync compatibility.

Dimension QMini Q1S Q1 Q2
Primary measurement styleSingle-point LDV128-beam structural monitoring and vibrometry128-beam portable vibrometry and metrology65-point simultaneous vibrometry with micro-scanning metrology
Typical deploymentLab, validation, diagnostics and modular field setupsFixed or repeated deployment on infrastructurePortable field deployment on large assetsIndustrial, lab and advanced inspection workflows
Distance rangeUp to 300 m with the appropriate SpeedSync head0.5–50 m0.5–50 m1.0–50 m
Geometry / metrology capabilitySingle-point vibration and velocity dataParallel interferometric position monitoring on structuresMicron-level metrology plus vibrometryMicron-level metrology plus 3D shape recovery
Parallel measurement densitySingle beam128 parallel beams128 beams, 128–25,600 points/s65 simultaneous channels; 65–13,000 points/s; up to 1,300 points per line through 20 sequential elevation steps
Vibrometry sampling62 MHz bandwidth, single-point40 kHz40 kHz40 kHz array, 125 MHz single-point with SpeedSync
Velocity capability±48 m/s±155 mm/s±155 mm/s±155 mm/s array, ±47.9 m/s single-point with SpeedSync
Monitoring modeFocused measurement at selected pointsShort-term deflection and long-term displacement monitoringCampaign-based inspection and vibration analysisDynamic analysis, deflection, modal shape and integrated metrology
Optical focusManual or fixed, depending on SpeedSync headFixedFixedAutofocus
Single-point extensionCore configuration through SpeedSync headsExpandable through synchronized Q-series workflowsExpandable through synchronized Q-series workflowsSupported with a SpeedSync single-point head

Typical Applications and Best-Fit Matrix

More ticks indicate a stronger fit for the workflow. Every platform remains relevant; the matrix shows relative degrees of suitability across common measurement scenarios.

✓ Relevant fit ✓✓ Strong fit ✓✓✓ Strongest fit
Application / workflowQMiniQ1SQ1Q2
Single-point diagnostics and validation✓✓✓✓✓✓✓✓✓
Bench and lab vibration testing✓✓✓✓✓✓✓✓✓
Modal testing support on selected points✓✓✓✓✓✓✓✓✓
Continuous structural health monitoring✓✓✓✓✓✓✓✓
Long-term displacement and deflection tracking✓✓✓✓✓✓✓✓
Portable field campaigns on large assets✓✓✓✓✓✓✓✓
Industrial metrology and dimensional inspection✓✓✓✓✓✓✓
Complex-surface 3D inspection✓✓✓✓✓✓✓
Multi-point dynamic analysis across a surface✓✓✓✓✓✓✓✓
Strain calculation from displacement or 3D velocity fields✓✓✓✓✓✓✓✓
Multi-view 3D velocity reconstruction✓✓✓✓✓✓✓
Next step

Choose by engineering output

Start from the evidence the measurement must produce: a single velocity trace, a monitored deflection curve, a field metrology scan, a modal map, or a traceable 3D vector and strain-ready data product.

1

Single-point evidence

Use QMini for velocity traces, FFTs, validation points, rotating-machine diagnostics or DAQ-synchronized channels.

Related: NVH and modal testing

2

Deflection and monitoring

Use Q1S for structural monitoring records: modal frequencies, traffic fingerprints, deflection curves and long-term displacement.

Related: bridge deflection monitoring

3

Portable field campaigns

Use Q1 when one operator needs 128-beam stand-off measurement, structural dynamics and micron-level metrology across large assets.

Related: large rotating machinery

4

3D vectors and strain-ready maps

Use Q2 when geometry, vibrometry, multi-view registration, spectra, mode maps, vectors and open exports need one workflow.

Related: 3D velocity and strain analysis

Q-Series comparison questions

Compare the four platforms by the engineering evidence, deployment and measurement density you need.

What is the main difference between QMini and Q1S?

QMini is a modular single-beam laser Doppler vibrometer for focused velocity traces, spectra and synchronized point measurements. Q1S is a fixed 128-beam Laser RADAR for repeatable structural monitoring, deflection curves and long-term displacement. Choose between them by deciding whether the deliverable is a high-dynamic-range point channel or a persistent spatial record across an infrastructure asset.

How do Q1 and Q2 differ?

Q1 is a portable 128-beam platform for field campaigns that combine stand-off vibrometry and micron-level metrology on large assets. Q2 uses 65 simultaneous channels with micro-scanning for dense dynamic analysis, 3D shape recovery, modal maps, multi-view velocity reconstruction and strain-oriented outputs. Q1 prioritizes field portability and broad parallel capture; Q2 prioritizes integrated full-field analysis.

Which platform supports the longest single-point range and highest bandwidth?

QMini with the appropriate SpeedSync head supports stand-off measurement from under 1 metre to 300 metres and a 62 MHz bandwidth. Q2 can also use SpeedSync for single-point operation, while its array workflow is specified separately. Treat these figures as configuration limits, not guaranteed project performance: target return, incidence, atmosphere, motion and validation still govern the usable result.

How should a team choose among QMini, Q1S, Q1 and Q2?

Start from the required output and test setting. Define point velocity, deflection, displacement, mode shape, geometry, 3D velocity or strain-ready data; then specify distance, field of view, surface, motion bandwidth, maximum velocity, environment, acquisition time, reference sensors and uncertainty. Map those requirements to the comparison table and confirm the proposed setup with an applications engineer.