Which telemetry file should I upload?

Choose the recording, not a screenshot or summary

Purple Sector needs the session’s recorded samples. A lap-time summary gives totals but cannot show where two laps differ. Upload an original supported recording or a full-session text export. Keep the original file unchanged so its units, timestamps and logger lap records can be read.

RaceBox

Bring: a .vbo exported from racebox.pro

RaceBox data export and lap analysis

On a computer

1. Open the RaceBox app with your phone online, so the session uploads.
2. Sign in at racebox.pro, open “My Sessions” and open the session.
3. Press the export button on the right and choose VBO.
4. Open that file here.

On a phone

1. Open the RaceBox app online, so the session uploads. The app itself has no file export.
2. In this phone’s browser, sign in at racebox.pro and open “My Sessions”.
3. Open the session, press the export button and choose VBO. It saves to Downloads.
4. Back here, open your lap file and pick it from “Recents” (iPhone) or Downloads (Android).

Watch out: Choose VBO, not GPX. A GPX has no G-force data.

Limits: Sessions with no laps are hidden in My Sessions: use the link at the bottom of the list to show them. A Mini S or Micro records on its own, and Chrome or Edge can read its sessions straight from it: Download from RaceBox (Bluetooth). Safari, iPhone and iPad browsers and Firefox cannot use Bluetooth from a web page, so export the session from racebox.pro there. The original Mini streams live to the app and keeps nothing to download.

Source: RaceBox session export guide.

VBOX

Bring: the session’s .vbo, exactly as the VBOX wrote it

Open VBOX .vbo files on a Mac or PC

On a computer

1. Wait until the record light is off, then take out the SD card.
2. Put the card in your computer. On a Video VBOX HD2 the .vbo is beside the video in the media folder.
3. Open the .vbo here as it is.

On a phone

1. With a VBOX Sport and the VBOX Laptimer iPhone app, turn on “Log VBO file” before the session.
2. After the session, the .vbo is in the Files app.
3. Open it here. The app’s “Export” button makes a results CSV, not the lap file.

Watch out: Bring the whole session’s .vbo. A Circuit Tools “Export Video and VBO” file holds only the laps you selected.

Limits: A per-lap export from Circuit Tools holds only the selected laps, so bring the whole session’s .vbo. A VBOX 3i on firmware 3.0 writes .vbb, which does not open: open it in VBOX Test Suite 2.0 or later, choose File, Save As, All channels, then VBO, and open the .vbo. On a Video VBOX HD2, never take the card out while the blue Record light is on or flashing.

Source: VBOX software and support.

AiM (MyChron, Solo)

Bring: the session’s .xrk or .xrz file

Analyse MyChron and AiM Solo .xrk files in your browser

On a computer

1. In Race Studio 3 (Windows), click the Wi-Fi icon, pick your MyChron or Solo and click “Connect”. A MyChron 6 can also use its USB-C cable.
2. Open the “Data Download” tab (“Download” on a MyChron 5 or Solo 2 DL), tick the session and download it.
3. Open the .xrk from C:\AIM_SPORT\RaceStudio3\user\data here. No export is needed.
4. No Windows? A MyChron can come off over its own Wi-Fi: choose “Download from MyChron (WiFi)” on your dashboard.

On a phone

1. AiM’s RaceStudio 3 phone app shares to AiM Cloud and FASTLAP only, so get the file on a computer.
2. On Windows, download the session in Race Studio 3. On a Mac, choose “Download from MyChron (WiFi)” on your dashboard.

Watch out: Bring the session file, not a Race Studio report or a one-lap CSV.

Limits: Race Studio 3 runs on Windows only; a Mac needs Purple Sector Link or a virtual Windows. On Windows 11 24H2, Race Studio 3 may not see the logger’s Wi-Fi until Location is turned on. A Race Studio 2 logger (MyChron 4 and older) saves a .drk: open it together with the .gpk and .rrk of the same name for the map. It opens with the logger’s laps and GPS speed; its other channels need a Race Studio CSV export. Race Studio summary tables cannot be opened.

Source: AiM Race Studio 3 manual.

Alfano

Bring: the session exported as CSV from ADA

Analyse Alfano ADA CSV exports in your browser

On a computer

1. In ADA for Windows, download the session by the A4540 USB cable or the A4550 wireless dongle (neither comes in the box).
2. Export the session as CSV.
3. Open that file here, as ADA wrote it.

On a phone

1. On the logger, turn on sharing (on an Alfano 7, the centre right button).
2. In the ADA app, download the session over Bluetooth.
3. Export the session as CSV, then choose “Save to Files” (iPhone) or Downloads (Android).
4. Back here, open your lap file and pick it from “Recents” (iPhone) or Downloads (Android).

Watch out: Don’t open and re-save the CSV in Excel. It can change the separators.

Limits: ADA covers the Alfano 7, Alfano 6, PRO III EVO and ADSGPS. The export does not say whether speed is in km/h or mph, or which G-force axis is which, so both are matched to the GPS track: Gf. X and Gf. Y are used as the kart’s g only where they follow it, and shown as worked out rather than measured. The GPS rate is read from the file too. Temperature and rear-speed channels keep their Alfano names.

Source: Alfano ADA software.

SpeedAngle

Bring: the original .sa file

On a computer

1. Install the free SpeedAngle R4 software and its USB driver from speedangle.com (Windows).
2. Plug in the SpeedAngle. In R4, open “LOG DOWNLOADER” (Ctrl+D).
3. Click “CONNECT DEVICE”, then “DOWNLOAD”, and pick a folder.
4. Open the .sa here as it is.

On a phone

1. SpeedAngle has no phone app. The .sa comes off by USB with the free R4 software on a Windows computer.
2. Open this page on that computer and open the .sa here.

Watch out: “ERASE ALL MEMORY” in R4 can’t be undone. Download first.

Source: SpeedAngle downloads.

RaceChrono

Bring: the session shared as .rcz (with Pro, a .vbo or CSV also works)

RaceChrono export and lap analysis

On a computer

1. RaceChrono runs on phones only. Share the session from the app as .rcz, or with Pro export it as VBO.
2. Send the file to your computer (email or AirDrop).
3. Open it here.

On a phone

1. In RaceChrono, open the session.
2. Tap the share button at the top of the session overview.
3. Choose “Save to Files” (iPhone) or Downloads (Android).
4. Back here, open your lap file and pick it from “Recents” (iPhone) or Downloads (Android).

Watch out: VBO and CSV exports are in RaceChrono Pro only.

Limits: RaceChrono’s feature table lists the VBO, CSV, NMEA and ODS exports in RaceChrono Pro only. On iPhone there is only the paid Pro app; on Android the free app can buy the Pro upgrade. The .rcz archive is supported but not yet checked against a customer’s file (it is tested on archives built to its documented layout), and its CAN channels arrive unnamed, so they are shown as file channels only.

Source: RaceChrono support.

Harry's LapTimer

Bring: the session exported as VBO (CSV also works)

Analyse Harry’s LapTimer sessions in your browser

On a computer

1. Export the VBO from Harry’s LapTimer on your phone and send it to your computer.
2. Open it here.

On a phone

1. In Harry’s LapTimer, open “Lap List” and tap a lap from the session.
2. Tap the share icon, set the scope to “Session” and the type to VBO (or CSV).
3. Choose “Save to Files” (iPhone) or Downloads (Android).
4. Back here, open your lap file and pick it from “Recents” (iPhone) or Downloads (Android).

Limits: A lap shared as Harry’s own .hlptr file opens too, with its position, speed and lap times; its OBD and g values are shown but not used for coaching, because the file does not say how they were measured. A GPX opens too if you have one. Harry’s LapTimer is a paid app, and which editions can export is not stated by the developer.

Source: Harry’s LapTimer documentation.

TrackAddict

Bring: the session shared as “Interpolated CSV” (or “.VBO”)

Analyse TrackAddict sessions in your browser

On a computer

1. In TrackAddict on your phone, share the session as “Interpolated CSV” or “.VBO” and send it to your computer.
2. Open it here.

On a phone

1. In TrackAddict, tap the “Sessions” folder icon and open the session.
2. Tap “Share” and choose “Interpolated CSV” (or “.VBO”).
3. Choose “Save to Files” (iPhone) or Downloads (Android).
4. Back here, open your lap file and pick it from “Recents” (iPhone) or Downloads (Android).

Watch out: The free edition keeps only three recordings. Export before you record a fourth.

Source: TrackAddict documentation.

MoTeC

Bring: the .ld with the .ldx of the same name

Open MoTeC .ld and .ldx logs in your browser

On a computer

1. Find the .ld and its .ldx: in i2’s Logged Data folder, or in your sim’s own MoTeC folder.
2. Select both and open them here together (or put them in one .zip).

On a phone

1. MoTeC logs are kept on a computer. Open this page there.
2. Select the .ld and its .ldx and open them here together.

Watch out: Bring the .ldx too. A sim’s .ld on its own has no laps.

Limits: A sim (ACC, Assetto Corsa, rFactor 2) writes its laps only in the .ldx, so an .ld opened alone has none. A log without GPS opens with its traces but no track map. An i2 CSV export also works; do not edit it in Excel first.

Source: MoTeC i2.

Garmin Catalyst

Bring: a .fit, from older Catalyst software only

Garmin Catalyst data export

On a computer

1. On current software, and on a Catalyst 2, Garmin documents no way to export a lap file. Record a second logger or phone app as well.
2. Older software (owners report the files stopped at 5.30): connect by USB and copy the session’s .fit.
3. If the session shows in Garmin Connect on the web, open it, choose the gear icon, then “Export File”.

On a phone

1. Garmin documents no file export from the Catalyst app.
2. Record a second logger or phone app as well, and open that file here.

Watch out: “SAVE VIDEO” makes a video with the overlay drawn on, not a data file.

Limits: Whether Garmin Connect holds a Catalyst session as an exportable activity, and at what rate, is not confirmed: if it works for you, tell us. The video the Catalyst app saves is a picture with the overlay drawn on it, not a data file.

Source: Garmin Catalyst 2 manual.

MyLaps (Speedhive)

Bring: your lap times as CSV from Speedhive

On a computer

1. Go to speedhive.mylaps.com and find the event.
2. Open your session and click your name.
3. Click “Download CSV”, then open that file here.

On a phone

1. In this phone’s browser, go to speedhive.mylaps.com and find the event.
2. Open your session and tap your name.
3. Tap “Download CSV”, then open that file here.

Watch out: Download your own lap times, not the whole session’s results.

Limits: A transponder records lap times only, so there are no traces, map or corner coaching from it. Pair it with a GPS logger or phone app for those.

Source: Speedhive.

GoPro

Bring: the original .MP4 straight off the SD card (or the .LRV beside it)

Analyse GoPro GPS data from your track video

On a computer

1. Copy the video off the card (in DCIM\100GOPRO) with a card reader or the camera’s USB.
2. Open it here. Only the GPS and motion data are read.
3. Open the same video in the Video tab to play it with the data.

On a phone

1. Bring the untouched file straight off the card: copy it to a computer with a card reader or the camera’s USB.
2. Open it here on that computer.

Watch out: An edited or re-exported video loses the data. A HERO12 Black has no GPS.

Limits: Bring the untouched file straight off the card: an edited or re-exported video loses its data. A HERO12 Black and a HERO10 Black Bones have no GPS, so they open with no map, speed or laps. Turn GPS on in the camera before the session. A long session the camera split into chapters (GX01…, GX02…) opens one chapter at a time for now.

Source: GoPro GPS help.

Unipro

Bring: the session’s text export from Unipro Analyser (.tsv or .txt)

On a computer

1. UniGo One: in Unipro Analyser press “Import over Wi-Fi”, or connect by USB. Other UniGo models: USB cable or USB key.
2. LapTimer 6003 or 7003: connect by USB to “PC Analyser”, choose “Receive” and wait for “Finished”.
3. Export one session’s full log as text, then open that file here.

On a phone

1. Unipro documents no phone route. Download the session to Unipro Analyser on a computer.
2. Export one session’s full log as text and open it here on that computer.

Watch out: Export one session per file. The raw .uni file does not open.

Limits: A file holding several sessions restarts its clock at each one. The raw .uni file from the device is not read. Checked against files built to the Analyser’s documented layout; if yours does not open as expected, send it to us.

Source: Unipro downloads.

Starlane

Bring: nothing yet: Starlane’s DatiRx.bin and .SCS files don’t open here

On a computer

1. Record with a GPS lap timer or a phone app alongside, and open that file.
2. Newer MAAT for Windows has an Excel export that isn’t tested here yet.

On a phone

1. Record with a GPS lap timer or a phone app alongside, and open that file.
2. Until then, the sample session shows what you get.

2D

Bring: an Excel CSV or ASCII text export from 2D Analyzer

On a computer

1. In WinARace, pick the event and download the USB stick.
2. In 2D Analyzer, open “File”, then “Create new”.
3. Set “Type” to “Microsoft Excel CSV file (.CSV)” or “ASCII (.txt)”, choose “All channels” and save.
4. Open that file here.

On a phone

1. 2D’s software runs on a computer. Export the CSV in 2D Analyzer there.
2. Open this page on that computer and open the file here.

Watch out: Choose CSV or ASCII, not “2D Measurement (.MES)” or “Microsoft Excel (.XLSX)”.

Limits: The .MES measurement file is not read; export CSV or ASCII instead. Checked against files built to 2D’s documented channel names; if yours does not open as expected, send it to us.

Source: 2D Analyzer export help.

iRacing

Bring: the session’s .ibt file

On a computer

1. Press Alt+L to start telemetry logging, and Alt+L again to stop.
2. Find the .ibt in Documents\iRacing\Telemetry.
3. Open it here as it is.

On a phone

1. iRacing saves telemetry on your PC. Open this page there.
2. Open the .ibt from Documents\iRacing\Telemetry here.

Watch out: A long session can be split into several .ibt files. Bring the one with your laps.

Limits: Supported, but not yet checked against a customer’s file: it is tested on files built to iRacing’s documented layout. If yours does not open as expected, send it to us.

Source: iRacing hot keys.

Race Technology

Bring: the session’s .run file from the logger’s card

On a computer

1. Take the card out of the logger (CompactFlash on an AX22, DL1 or DL2; SD on a DL1 PRO or DL1 FD).
2. Put it in a card reader and open the folder named RT plus the date.
3. Open the .run here as it is.

On a phone

1. The .run comes off the logger’s card, in a card reader on a computer.
2. Open this page on that computer and open the .run here.

Watch out: There’s no USB download. The logger’s USB is for setup and live view.

Limits: Supported, but not yet checked against a customer’s file: it is tested on files built to Race Technology’s published message format. Laps come from the track marker stored in the file, else from the repeated GPS path. Channels such as analogue and frequency inputs are not read yet.

Source: Race Technology software.

Link ECU

Bring: the .llg log PCLink saved

On a computer

1. In PCLink, download the ECU log, or save the PC log before you close PCLink.
2. Open the saved .llg here as it is.

On a phone

1. PCLink runs on Windows only. Save the log there.
2. Open this page on that computer and open the .llg here.

Watch out: Save a PC log before closing PCLink. It isn’t saved on its own.

Limits: Supported, but not yet checked against a customer’s file: Link publishes no description of the format, and it is tested on files built to the layout that has been worked out. A PCLink CSV export also works. A log without GPS has no track map, and its laps come from the repeating speed trace.

Source: PCLink.

ECUMaster

Bring: an EMU Black V2 .emublog, or a Data Master CSV

On a computer

1. EMU Black V2: press “Save log” in the Graph Log window before closing, then open the .emublog here.
2. V3, EMU PRO or ADU: open the log in Data Master with “File”, “Open log”.
3. Press “Export to CSV” and pick the dot decimal, comma separator option.
4. Open the CSV here.

On a phone

1. ECUMaster logs are saved on a computer. Open this page there.
2. Open the .emublog or the Data Master CSV here.

Watch out: Not the “system / ;” option when you export. It writes semicolons.

Limits: Supported, but not yet checked against a customer’s file: the .emublog is tested on files built to the layout worked out for EMU Black V2 firmware. The log has no GPS and no vehicle speed, so there is no track map, lap timing or coaching from it on its own; record GPS alongside for those. EMU Black V3 (.emublog3), EMU PRO and ADU logs do not open yet: export them as CSV from Data Master.

Source: ECUMaster Data Master.

dragy·Lap

Bring: the session exported as .vbo

On a computer

1. Export the .vbo from dragy·Lap on your phone, then email or AirDrop it to your computer.
2. Open it here.

On a phone

1. In dragy·Lap, open the session.
2. Use the app’s export or share option and choose .vbo.
3. Choose “Save to Files” (iPhone) or Downloads (Android).
4. Back here, open your lap file and pick it from “Recents” (iPhone) or Downloads (Android).

Watch out: Choose .vbo, not .dlap. The .dlap is dragy·Lap’s own format and doesn’t open here.

Source: dragy·Lap on the App Store.

Garmin watch or Edge

Bring: the original .fit from Garmin Connect (“Export File”)

On a computer

1. Sign in to Garmin Connect on the web and open the activity (“Activities”, then “All Activities”).
2. Select the gear icon at the top right and choose “Export File”.
3. Open the download here. If it comes as a .zip, open the .zip as it is.

On a phone

1. In this phone’s browser, sign in at connect.garmin.com and open the activity.
2. Select the gear icon and choose “Export File”.
3. Open the download here.

Watch out: Set the watch to record every second before the session. “Smart” recording logs fewer points.

Limits: A watch records about once a second at best, so expect lap times and speed rather than detailed corner coaching. GPX and TCX exports also open, but carry less. Auto-laps are ignored and laps are found from the GPS path.

Source: Garmin: exporting activity data.

Qstarz

Bring: a CSV track export

On a computer

1. Connect the logger by USB (an LT-Q6000 or 6000S switched off, a BT-Q1000eX switched on) and open QRacing on Windows.
2. Click “Yes” to read the log, or “File”, then “Read Log”.
3. Pick the session, then “File”, “Export Tracks”, and choose CSV.
4. Open it here and match the columns.

On a phone

1. With the QRacing phone app (LT-8000GT, BL-1000GT or BL-818GT), export the session as CSV.
2. Choose “Save to Files” (iPhone) or Downloads (Android).
3. Back here, open your lap file, pick it from “Recents” (iPhone) or Downloads (Android) and match the columns.

Watch out: “Export Lap Info” gives lap times only. Use “Export Tracks”.

Limits: An LT-Q6000S can also export a CSV itself: in History mode press Menu, choose Export track, then CSV, and copy it off over USB from the 6000S\Exports folder. No Qstarz software exports VBO. An LT-8000GT .BIN file does not open. Not yet checked against a real Qstarz file.

Source: QRacing user manual.

APEX Pro

Bring: the session’s CSV export from the APEX Pro app

On a computer

1. Export the CSV from the APEX Pro app on your phone and send it to your computer (AirDrop or a message works).
2. Open it here and match the columns.

On a phone

1. Keep your phone connected while the session downloads from the APEX Pro over Bluetooth.
2. Export the session as CSV, then choose “Save to Files” (iPhone) or Downloads (Android).
3. Back here, open your lap file, pick it from “Recents” (iPhone) or Downloads (Android) and match the columns.

Source: APEX Pro FAQs.

What happens when the file opens?

The importer identifies channels and units, reads logger lap timing when it is available, and shows the recording’s data quality. For text exports, check the column mapping if a channel is missing or a unit is unclear. A missing channel is not a zero reading.

When the recording has no usable logger timing, you may need to place a timing point on the GPS trace. A file without GPS can still have usable lap times or channels, but it cannot establish a mapped track or a recorded driving line.

What if my file will not open?

Export the complete session, rather than selected chart values or a Race Studio summary table. Keep a copy of the original. Note the logger, export format and the message shown by the importer. Contact support@purplesector.dev with a short sample if you want help checking it.

Related guides

• A worked lap comparison at Norwell
• How to compare laps with telemetry
• What GPS telemetry can and cannot tell you
• How Purple Sector AI coaching uses your data

Reading your data: Track day telemetry for beginners · Optimal lap time · MyChron software and apps · Motorcycle lap timers compared.

Guides by logger: AiM (MyChron, Solo) · RaceBox · VBOX · RaceChrono · Harry's LapTimer · TrackAddict · MoTeC · Garmin Catalyst · GoPro · Alfano.

Popular circuits: Mount Panorama · Phillip Island · Sydney Motorsport Park · The Bend Motorsport Park · Albert Park Grand Prix Circuit · Adelaide Street Circuit · Lakeside Park · Calder Park Raceway · all circuit maps.