IRIG 106 Chapter 10 — .ch10, .c10
Files from any compliant recorder. The TMATS header is displayed and checked, and every channel is listed with its name, type and rate, ready to be placed on a display.
Free download
The universal flight recording viewer: flight test, Chapter 10 and ARINC recorders.
D.T.MUX Viewer opens IRIG 106 Chapter 10 recordings from any compliant recorder, ETEP .mux files and the files downloaded from flight recorders: raw ARINC 717 from a QAR or a DFDR, ARINC 767 (EAFR) and ARINC 657 (.rso). Video, the trajectory on a map or in 3D, cockpit instruments, avionics buses and analog channels play back on a single time base — for the engineer analysing a test point and for the crew debriefing the flight.
✓ Free and unlimited with ETEP equipment · version 1.82.10
User manual (PDF) →- Price
- Free with ETEP equipment
- Opens
- .mux · .ch10 · .c10 · ARINC 717 / 767 / 657
- Recorders
- ETEP, IRIG 106, QAR, DFDR, EAFR
- Runs on
- Windows 10 & 11 · 100% offline
WHAT IT OPENS
Your recording, whoever built the recorder.
One tool for every recording on your desk. A Chapter 10 file describes its own channels in its TMATS header and time-stamps every packet; a flight recorder file is read with the aircraft's frame definition (ARINC 647 FRED). No conversion, no plug-in per manufacturer.
D.T.MUX — .mux
The native format of ETEP recorders, read directly with the same displays and tools. It also converts losslessly to Chapter 10.
Live network streams
Chapter 10 UDP streams from any compliant recorder or ground system — like ETEP's D.T.MUX streams — are displayed in real time exactly like a file, with the same layout in flight and after landing. A test centre running several manufacturers' equipment needs one tool for all of them.
Flight recorders — ARINC 717, 767, 657
Raw ARINC 717 data downloaded from a QAR or a DFDR, ARINC 767 (EAFR) files and ARINC 657 recorder downloads (.rso). With the aircraft's frame definition (ARINC 647 FRED), the parameters come out in physical units, drive the cockpit instruments and the 3D flight view, and export to CSV. Like Chapter 10 recordings from other manufacturers' systems, they open with D.T.MUX Viewer Professional.
TWO USES, ONE TOOL
The test engineer and the crew look at the same flight.
Engineers need measurements; crews need to see what happened. D.T.MUX Viewer serves both from the same recording, without exporting anything to another tool.
Flight-test analysis
Oscilloscope with cursors and more than twenty automatic measurements, 3D waterfall and order-based spectral analysis, PCM decommutation with sync monitoring, MIL-STD-1553, ARINC 429, CAN and Ethernet decoding, sample-accurate alignment across every channel displayed — and packet-level integrity views (checksum errors, sequence breaks, gaps, bit rate per channel) to validate a file before trusting it. During reception, acquisition or replay, the Supervision menu keeps watch on the channels that matter — thresholds and alarms, calculated channels, "if… then" rules — even when no cell displays them.
Post-flight debriefing
Cockpit or sensor video, the trajectory on an offline map or in 3D over the terrain, and the integrated ARINC 429 cockpit — PFD, classic dials, navigation map, 3D vision — play back together with the recorded parameters. Stop on an event, go back, show what the aircraft was doing and when — then keep the record in a PDF report.
demo-flight.c10 — 6 channels Playback ×1 Paused Integrity: ✓ no anomaly Opening demo-flight.c10…
POST-FLIGHT DEBRIEFING
Replay the flight with the people who flew it.
Everything the recorder captured, on one screen and one time base: what the camera saw, where the aircraft was, what the instruments read and what the systems were doing at that instant.
Test pilots and flight-test teams
Review a test point with the pilot shortly after landing: the video, the trajectory and the parameters of the manoeuvre side by side, before the data even reaches the analysts.
Pilot training
The instructor replays the flight with the trainee — approach, manoeuvre or procedure — from the cockpit camera and in 3D behind the aircraft, with the instruments and the track. The discussion rests on what happened, not on what each of them remembers.
Mission crews
After a mission, the crew goes back over the route, the sensor video and the sequence of events. The recording never leaves the debriefing station: the Viewer runs entirely offline.
Incident analysis
When something unexpected happens in flight, the recording shows when and how: the parameter that drifted, what the video shows at that moment, where the aircraft was and in what attitude, in 3D over the terrain. The segment can be extracted and attached to the report.
3D FLIGHT
Replay the trajectory in 3D, over the terrain.
As soon as a recording carries a position — NMEA GPS or ARINC 429 — any cell can replay the flight on a globe with terrain relief: the aircraft oriented by its recorded attitude, its trajectory and photographic imagery, in step with the playback bar and on the same time base as the video and the instruments.
Five cameras, generic models
Chase, orbit, free, pilot or top-down view; click the trajectory to jump to the nearest recorded point. Light aircraft, twin turboprop, jet, helicopter, drone or target — no brand, no livery — or your own glTF model.
Measured or computed, always said
Evidence rendering in steps, or smooth rendering interpolated between two valid measurements — never across a gap. A quantity that was not recorded can be computed, and is then flagged as such.
Offline by default
A built-in globe works with no connection at all. Open imagery (Sentinel-2, IGN, swisstopo) or Esri with your own key is downloaded only when you ask for it.
Exports and reports
Trajectory, position and attitude to Tacview (ACMI 2.2), Google Earth Pro (KMZ) or a spreadsheet (CSV), with their provenance. The 3D view goes into the test report.
The 3D view is a reconstruction from the recorded position and attitude, on present-day terrain and imagery: it places the flight, it does not show what the crew saw.
SUPERVISION
Keep watch on the channels that matter, live or in replay.
The Supervision menu watches the channels you choose in replay, live reception or acquisition, even when no cell displays them: thresholds and alarms, calculated channels, supervision panels and "if… then" rules. A whole recording can also be checked for exceedances without being played.
Thresholds and alarms, per channel
High and low warning and alarm levels, hysteresis, delays (0.5 s suggested), an audible signal and an instruction for the operator. The cell is bordered in amber or red, an alarm banner appears above the mosaics, and each alarm can be acknowledged or shelved. A time-stamped log — computer time and recording time — exports to CSV.
Exceedances in a whole recording
The whole file, or the A–B zone, is analysed without being played, and the exceedances are marked on the time bar. The test report gains a "Threshold exceedances" section.
Calculated channels
Formulas between channels, by number or by name, with the usual functions, moving average, derivative, integral and interpolation table. A calculated channel is shown in a cell like any channel, with its own thresholds.
Supervision panels
Values, dials, bars, indicator lights, curves, texts, images, video, the time and the alarm list, placed freely in a cell, with a colour palette per panel. The same panel reads as well on a 1024 × 768 screen as on a 4K screen.
"If… then" rules
When a condition is true, a rule can set a marker, show a message, sound a signal, add a capture to the report, pause the replay, or start or stop recording the received stream.
Templates, operator mode, workstations
A supervision set-up is saved as a template and applied to other recordings; channels are matched by name, with a check window when the names differ. Operator mode locks the layout and settings — full screen as an option, exit with a code — and a workstation configuration exported from one computer sets up another one identically.
Supervision is part of D.T.MUX Viewer for every user, with no extra licence. Calculated channels are meant for slow quantities: each channel enters a formula through its average value.
KEY FEATURES
What it does, in full.
- Opens Chapter 10 (.ch10, .c10), D.T.MUX (.mux) & ARINC 717 / 767 / 657 flight recorder files
- Post-flight debriefing — video, map, instruments & data on one time base
- 3D flight replay on the globe — terrain, imagery, recorded attitude, five cameras
- Real-time UDP network streaming (Chapter 10 & D.T.MUX)
- Synchronized mosaics — grid or free placement, fullscreen
- Savable workspace layouts, reusable across recordings
- Supervision — thresholds & alarms, calculated channels, supervision panels, "if… then" rules
- Operator mode · workstation configuration copied from one PC to another
- Oscilloscope with cursors & 20+ automatic measurements
- 3D waterfall & order-based (Campbell) spectral analysis
- Live acquisition, triggered recording & replay on ground-station cards
- Panorama view — whole-file signal overview with automatic anomaly flagging
- dBV spectrum analysis & Volta card calibration
- Board descriptors (.inf) — per-card correction, ranges & capabilities
- Sample-accurate time alignment across all displayed channels
- PCM decommutation with real-time sync monitoring
- Integrated ARINC 429 cockpit — PFD, dials, navigation map, terrain, 3D vision, raw labels
- ARINC 573 / 717 cockpit displays
- MIL-STD-1553, CAN, Ethernet, UART & parallel decoding
- H.264, MPEG-2 & JPEG2000 synchronized video
- GPS trajectory with offline maps, GPX / KML export
- Trajectory export to Tacview (ACMI 2.2), Google Earth (KMZ) & CSV
- Customizable, ETEP-branded test reports (PDF / HTML)
- Segment extraction & CSV export (.c10 & .mux)
- TMATS visualization & integrity check
- Packet-level integrity — checksum errors, sequence breaks, gaps, bit rate per channel
- Live display of any compliant Chapter 10 UDP stream, whatever the manufacturer
- Service-card displays — temperature, pressure altitude, gyros, GPS
- Discrete inputs with timing diagram · pulse-counting channels
- Automatic mosaic fill when a file is first opened
- Available in 8 languages · 100% offline operation
RECORDERS
Recorded with ETEP, replayed for free.
Recordings from ETEP equipment — Chapter 10 or D.T.MUX — open in D.T.MUX Viewer with every function, free of charge and with no time limit.
D.T.MUX NanoX
High-speed 1 Gbps acquisition / recording / replay / transmit.
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D.T.MUX Nano
Lightweight multi-role recorder, removable SSD 64 GB–2 TB.
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D.T.MUX DVR
Full HD / 4K airborne video recorder, H.264 / H.265, up to 2 TB.
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D.T.MUX Ground Station
Telemetry receiver, recording, real-time viewing, replay & post-processing.
VIEW MORELICENSING
Free with ETEP equipment.
For recordings made with ETEP equipment — .mux files and Chapter 10 files written by D.T.MUX recorders — D.T.MUX Viewer is free, with every function and no time limit. For recordings from other manufacturers' systems (Chapter 10 files and streams, raw ARINC 717, ARINC 767 and ARINC 657 files), D.T.MUX Viewer Professional starts with a 30-day free trial, then costs €99 excl. VAT per month per computer, support and updates included, for businesses and associations.
OTHER D.T.MUX SOFTWARE
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FREQUENTLY ASKED
Before you install it
How do I open an IRIG 106 Chapter 10 file?
Install D.T.MUX Viewer on a Windows 10 or 11 PC and open the .ch10 or .c10 file. The Viewer reads the TMATS header, lists the recorded channels and lets you place them on displays — oscilloscope, video, map, instruments, bus decoders. No conversion step is needed.
Which recorders' files can it read?
ETEP recorders (.mux and Chapter 10), any recorder that writes IRIG 106 Chapter 10 compliant files, whatever the manufacturer, and the files downloaded from flight recorders: raw ARINC 717 from a QAR or a DFDR, ARINC 767 (EAFR) and ARINC 657 (.rso), since version 1.82.10. Chapter 10 is an open standard: the file describes itself. Flight recorder data comes out in physical units with the aircraft's frame definition (ARINC 647 FRED), which the Viewer's frame editor can also create.
Can it check a Chapter 10 file at packet level?
Yes. Besides the TMATS header, displayed and checked, the integrity and bit-rate views show checksum errors, sequence breaks, gaps and the bit rate of each channel, packet by packet — a suspect file is diagnosed before it is analysed.
Does it work in a test centre with several manufacturers' equipment?
Yes. It opens Chapter 10 files from any compliant recorder and displays any compliant Chapter 10 UDP stream in real time, whatever the manufacturer, next to ETEP's D.T.MUX files and streams — with the same layouts for live monitoring and for replay.
Is D.T.MUX Viewer free?
Yes, for recordings made with ETEP equipment: every function, with no time limit. For recordings from other manufacturers' systems (Chapter 10 files and streams, raw ARINC 717, ARINC 767 and ARINC 657 files), D.T.MUX Viewer Professional starts with a 30-day free trial, then costs €99 excl. VAT per month per computer, support and updates included.
Can it be used for post-flight debriefing?
Yes. Cockpit or sensor video, the GPS track on an offline map, virtual ARINC 429 instruments and the recorded parameters play back together on a single time base. Debriefing layouts can be saved and reused from one flight to the next, and a PDF report keeps the record.
Can it replay the flight in 3D?
Yes, since version 1.70. When the recording carries a position — NMEA GPS or ARINC 429 labels 310/311 — any cell can replay the flight on a 3D globe with terrain and imagery, the aircraft oriented by its recorded attitude, with chase, orbit, free, pilot and top-down cameras. It works in file replay (not in live reception), needs 3D acceleration and the Microsoft Edge WebView2 component, and remains a reconstruction on present-day terrain and imagery, not what the crew saw.
Does it need an internet connection?
No. D.T.MUX Viewer runs 100% offline: recordings never leave the machine that opens them, which suits confidential flight data. The maps and the 3D view work offline too, on a built-in globe; finer imagery and terrain are downloaded only if you tick "Online". Exception: D.T.MUX Viewer Professional (recordings from other manufacturers' systems) checks the subscription online and stays usable for up to 7 days without a connection.
What computer does it need?
For data and HD video: Windows 10 (22H2) or 11, 64-bit, 8 GB of memory, a 4-core processor from 2017 or later and DirectX 11 graphics (integrated graphics will do). For 4K video, live network reception, Supervision and the 3D flight view, we recommend Windows 11, 16 GB, 6 cores, graphics with hardware video decoding (HEVC) and recordings on a local SSD. The full table is on the download page.
Which video formats does it replay?
H.264, MPEG-2 and JPEG2000, synchronized with the data recorded alongside them.
Can it display data live?
Yes. Chapter 10 UDP streams from any compliant source and ETEP D.T.MUX streams are displayed in real time, and on ETEP ground-station cards the Viewer also acquires, records on trigger and replays.
Can it raise threshold alarms on live data?
Yes, since version 1.75. The Supervision menu sets high and low warning and alarm thresholds per channel, with hysteresis, delays and an audible signal, in live reception, in acquisition or in replay — even on channels that no cell displays. Alarms show in a banner above the mosaics, are acknowledged or shelved, and are kept in a time-stamped log that exports to CSV. A whole recording can also be checked for exceedances without being played.
Can I export the data?
Segments can be extracted and exported to CSV from both .c10 and .mux files, GPS tracks to GPX or KML, the 3D trajectory with its attitude to Tacview (ACMI 2.2) or Google Earth Pro (KMZ), and reports to PDF or HTML. For bulk conversion of D.T.MUX recordings, D.T.MUX Converter exports to binary, float, ASCII, Excel and MATLAB-compatible formats.
Open your own recording in it.
Download D.T.MUX Viewer — free with ETEP equipment, with a 30-day free trial for files from other recorders.
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