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CPAP Clarity

ResMed S9 (System 9)

See your ResMed S9 nightly data

The S9 is an older ResMed machine, but it saves detailed data to its SD card, including a high resolution flow recording. So you get your nightly AHI, your scored events with a timeline, a breath-by-breath flow trace, and your pressure and leak trends across the night. CPAP Clarity reads it all in your browser.

Import your ResMed S9 data

What CPAP Clarity shows you

Nightly AHI
Events / hour

Your apnea hypopnea index for each night, computed from the events your S9 scored, with the standard severity context.

Events
Type + timeline

The S9 records each breathing event it scores, so you see the per-night breakdown of obstructive, central, and hypopnea events, and when across the night each one happened.

Flow Trace
Breath by breath

The S9 saves a high resolution flow recording to the card, so you can scroll the breath-by-breath airflow trace and zoom into a single event, the same detailed graph OSCAR draws.

Pressure
Trend + 95th

The therapy pressure your machine delivered, plotted across the night, with the 95th percentile called out. On an auto machine this moves night to night as your airway needs change.

Leak
Trend + 95th

How much air escaped around your mask, plotted across the night, with the 95th percentile called out. A consistently high value is usually the first sign to try a mask refit.

Usage
Hours / Compliance

Nightly usage hours feed the same therapy score, trends, and 30-day compliance view as any other ResMed machine, plus the therapy report PDF you can hand a clinician.

CPAP Clarity plots your pressure and leak as trend charts across the night, next to the breath-by-breath flow trace, and calls out the 95th-percentile pressure and leak as your headline numbers. All of it is read from the SD card in your browser.

How to import your data

1

Remove the SD card

Power the machine off. The SD card sits in a slot on the side of your S9. Take it out. Any standard full-size SD card reader works.

2

Insert into your computer

Plug the SD card into a card reader connected to your computer or phone. A drive should appear with your therapy data on it.

3

Drop the folder on CPAP Clarity

Open CPAP Clarity, go to the import page, and drag the entire SD card folder onto the drop zone. Select the whole folder, not a single file, so your summary and detailed nights both come through.

Go to import page

Frequently Asked Questions

Does CPAP Clarity work with my ResMed S9?

Yes. The S9 (System 9) is an older ResMed generation, and CPAP Clarity reads its SD card directly in your browser. You get your nightly AHI, your scored events with a timeline, a breath-by-breath flow trace, and your pressure and leak, with nothing uploaded to a server.

Which S9 models are supported?

The detailed S9 models: S9 AutoSet, S9 Elite, S9 AutoSet for Her, and the S9 VPAP family. The S9 Escape and Escape Auto are simpler machines that store only a daily summary, so they show usage and a nightly figure rather than a flow trace.

Can I see my AHI and my events from an S9?

Yes. Your nightly AHI is computed from the events your S9 scored, and CPAP Clarity also shows each of those events, broken down by type and placed on a timeline, so you can see when across the night your events clustered.

Can I see my pressure and leak across the night?

Yes. CPAP Clarity plots your pressure and your leak as trend charts across the night, right next to the breath-by-breath flow trace, and calls out the 95th-percentile pressure and leak as your headline numbers. All of it is read from the SD card in your browser.

Where is the SD card on an S9?

It sits in a slot on the side of the machine. Power the S9 off, take the card out, and drop the whole folder onto CPAP Clarity. A standard full-size SD card reader works.

Is my ResMed S9 data private?

Yes. All reading and analysis of your card happens in your browser, on your own device. Your therapy data is never uploaded to any server, and CPAP Clarity keeps it in your browser's local storage so you can return without re-importing.

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