RPM — Turntable Speed Accuracy 4+
Test RPM Speed Wow and Flutter
Philip Broder
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- 4.4 • 1.6K Ratings
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- Free
- Offers In-App Purchases
iPhone Screenshots
Description
The best turntable RPM speed and accuracy testing mobile app available.
See the RPM speed variations, wow/flutter, of your turntable in real time graphics like you’ve never seen before.
There are many ways of testing the average RPM of your turntable, some turntables even have this built in, however there is no other practical way of showing the wow/flutter variation over time than RPM. The average RPM may look great however a large wow/flutter will make the sound terrible, RPM will help you identify the problem and visualise improvements you make.
Test the RPM and wow/flutter accuracy of your turntable, whether 16, 33 1/3, 45, or 78.
Now with the Worldwide RPM Turntable Accuracy Database you can research what other RPM users are finding out about their turntable’s accuracy and what they think of them, + Stats of the most popular TT makes & models
● RPM is proud to be recommended by Rega Research Ltd, makers of some of the best turntables in the world.
● Great review by top tech vlogger Techmoan on Youtube
● Used in high end TT reviews in Stereophile magazine
Save all your rpm tests in My History for reviewing or sharing later.
RPM uses the gyroscope in your iPhone to determine the rotation speed of your turntable, automatically determines which speed setting you’re on, and reports how accurate it is.
Simply place your iPhone flat over the centre of the turntable platter. As the iPhone rotates the display will remain stationary from your perspective for easy reading.
The UNIQUE feature of RPM is that it shows a scrolling graph of the rpm accuracy variation over time, this shows wow/flutter effects, especially those associated with the turntable not being level, belt wear, etc. You can even detect the small drag caused by the stylus resting in the grooves.
You can even visualise wow and flutter variations plotted actually around the vinyl centre to show a heat map of exactly where in the turntable rotation the inaccuracies occur.
For Upgraders the history graph parameters can be customised to:
— Set the moving average sample size.
— Accuracy at which to turn the rpm circle sold green.
— Set a duration after which the display updates will freeze so they can continue to be read after the turntable is stopped, this is also required to save sessions to History and upload to the World TT DB
— detect and graph 16, 45, & 78 records.
Calibration Mode is here! (Upgraders only plus not on iPod as compass required)
The RPM realtime display is reliant on the iPhones gyroscope accuracy, which is normally very accurate, if you suspect yours isn’t quite right then you can now use Calibration Mode to auto test and then apply any necessary correction in real time.
This auto calibration uses the compass to count the turntable revolutions, if you have an older iPhone (not iPhone 6S or newer) then this may be unreliable, in this case you can still add your own multiplier if you have done an independent calibration.
Extensive testing means we’re now confident that using RPM can help you setup your turntable to be within 0.1% of its target RPM, assuming your turntable can be adjusted and is itself stable within that tolerance of course.
Use 33 1/3 rpm for auto-calibration as at 45 and 78 rpm the compass simply won’t be able to keep up.
Note that calibration isn’t normally required, and that only uncalibrated sessions may be uploaded to the World TT DB to ensure all data is comparable.
Now with the World RPM Turntable Performance Database, accepting submissions from RPM users worldwide to build the ultimate resource for researching the most accurate turntables out there. Upgrade to join in and upload your own TT data, go to Settings and make sure you have the Freeze time set then do an RPM session as normal. At the end of the time you will can name your session after which you will have the option to upload it to the World DB. You can always upload from History later too.
Источник
Torque OBD2 Bluetooth Scanner 4+
Hoi Huynh Ngoc
Для iPad
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- Утилиты: № 153 в этой категории
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- 4,2 • Оценок: 267
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- Бесплатно
- Включает встроенные покупки
Снимки экрана
Описание
Torque OBD2 Bluetooth Scanner is a iOS app that communicates with an ELM OBDII (OBD2) car interface device via bluetooth connection.
• Check/clear engine codes, view performance data, fuel economy, customize gauges.
• Puts you in control — Monitor and data log engine and vehicle performance, fuel economy, and instantly read and clear troublesome check engine lights, all with the easy to use app.
• Store maps and navigation directions to use for your car when there is no internet connection. Take your maps and directions everywhere
HOW TO USE WITH BLUETOOTH OBD 2 OBD2 OBDII ELM 327:
— Locate the OBD 2 port: get to know where the OBD 2 connection port is located. This is usually found somewhere below the drivers’ seat. In some older car versions, the dashboard would be better if you checked.
— Turn on the car engine: Although the OBDII port is providing power to the scanner, in some cases you will not be able to retrieve any engine data without the engine running.
— Run the application: Click «SCANNER” to get list OBDII / OBD2 / ELM327 devices list near you via bluetooth and select. (Make sure you turn on your Bluetooth service on iPhone / iPad)
You have any questions or concerns? Feel free to contact us.
We’re always here to help.
Источник
