A, B, C and D Modes on Cavitation Machines: Why Labels Vary
Home device literacy
A mode letter is a label. Understanding it starts with the documentation for the machine and function in front of you.
Short answer: A, B, C and D on a cavitation machine are manufacturer-defined program labels, not a universal set of treatment settings. Do not assume A means continuous output or D means the gentlest option. Match the exact model, software version and selected handpiece to its instructions, then check what each letter changes. If the documentation does not define the modes, their meaning remains unverified: do not choose one by copying another machine’s chart.
What do A, B, C and D actually mean?
The useful answer is the definition for your particular function screen. An A–D chart from another console does not establish that definition. A supplier’s resource library, for example, separates cavitation documentation by series and model rather than offering one set of instructions for every machine. [1]
There is no verified A–D mapping for an unidentified machine in this guide. Treat claims such as “A is strongest,” “D is for beginners” or “the pauses get longer from B to D” as questions to check, not instructions to follow.
Even a PDF labeled as a cavitation manual is not enough by itself. The supplier-hosted 101 manual reviewed here names ultrasound and radiofrequency attachments and shows separate function selection, but its extracted text does not supply a clear A–D definition. It cannot establish which letter to select on your machine. [2]
If you cannot identify the selected function or find its mode definition, pause use until the documentation is clarified. Choosing a supposedly mild letter does not resolve missing instructions.
Continuous and pulsed describe a pattern, not a treatment ranking
In waveform terminology, continuous output has no programmed off interval while it is active; pulsed output is delivered in bursts separated by intervals. The letter assigned to either pattern must still come from the matching instructions.
| Term | What it describes | What it leaves unanswered |
|---|---|---|
| Continuous | Output without programmed off intervals during activation. | Intensity, suitability and clinical results. |
| Pulsed / intermittent | Bursts with intervening off intervals. | Pulse duration, repetition rate and output during each burst. |
| Duty cycle | The proportion of a repeating cycle occupied by the on interval. | The peak output and how the field is distributed. |
FDA’s ultrasonic therapy technical document distinguishes continuous-mode average output from pulsed-mode peak output and treats pulse duration and repetition rate as separate information. This is a terminology reference for therapy equipment—not confirmation that an unnamed home cavitation machine meets that standard. [3]
A useful mode definition therefore needs more than the word “pulsed.” Ask what the program changes and how output is specified. The same duty cycle can be produced by different burst lengths; it does not uniquely identify a waveform or tell you which mode is appropriate.
These terms also do not establish the technology family. Low-frequency nonfocused cavitation, focused mechanical ultrasound, thermal high-intensity focused ultrasound (HIFU), 1 MHz ultrasound systems and radiofrequency (RF) require their own documentation. A shared mode label is not evidence of equivalent output, biological effects or operating limits.
Keep the mode letter separate from output and time
Read the controls together, but do not treat them as interchangeable. The 101 documentation example separates function selection, operating mode, working intensity and working time. That describes its interface; it does not establish a common scale across consoles. [2]
- Function or handpiece: identifies which modality’s instructions you need.
- Mode: identifies a program whose behavior must be defined.
- Output control: needs a documented scale and units. A level number alone cannot be converted into acoustic power.
- Timer: needs an explanation of what it counts, including what happens during pauses.
A flashing indicator is not a calibrated output measurement. The FDA technical document distinguishes an energized-head indicator from output indication. A light, display animation or perceived sound cannot substitute for the manufacturer’s output specification. [3]
How to check that the manual matches your machine
This is a documentation check, not a treatment protocol. Record identifying information without activating a handpiece to “test” a guessed mode.
- Identify the unit. Record the manufacturer, exact model, serial number and hardware revision where available. A similar casing or screen layout is insufficient.
- Identify the software. Record the firmware or software version if displayed. If unavailable, ask support to confirm which manual applies to the serial number.
- Identify the function and attachment. Note the menu name, handpiece label and connector identification. Do not use an RF section to interpret ultrasound controls.
- Identify the document. Check its title, revision, date, supported models, intended user and permitted setting of use. A downloadable file does not itself establish permission for home use.
- Resolve discrepancies. If the document has different letters, icons, accessories or controls, obtain written clarification before proceeding.
| Question | Information to obtain |
|---|---|
| What does each letter change? | A definition for each program on the selected function, including whether output is continuous, pulsed or otherwise modulated. |
| How is output described? | Units, the meaning of the displayed scale and whether values are peak or average. |
| What happens when I pause or change menus? | Documented start/stop behavior, and whether settings persist or reset. |
| Who and what is the mode intended for? | Intended user, compatible attachment, permitted sites and relevant restrictions in the exact instructions. |
A precise question for technical support
“Please confirm the current instructions for my model, serial number and software version. On the selected function screen, what does each A–D program change? Please identify the relevant manual section, output units, timing definition, compatible handpiece and intended user. My screen shows these labels; please explain any difference from the manual.”
Attach a clear photograph of the label and screen if requested. Do not send a body photograph as a substitute for equipment identification. Keep the response with the matching manual so that a later software or accessory change does not leave you relying on an outdated chart.
Mode mistakes to avoid
- Ranking letters: A is not inherently “best,” and D is not a safety certificate.
- Copying a video: matching letters on two screens do not establish matching programs.
- Using comfort as calibration: a tolerable sensation does not identify delivered output.
- Assuming a timer is exposure: check whether pauses are included before interpreting it.
- Choosing another attachment: a mode letter does not authorize a different handpiece or body site.
Safety comes before mode selection
FDA’s body-contouring guidance lists burns and nerve damage among ultrasound complications. It advises against ultrasound procedures over open wounds or compromised skin, and for people with active implants or metal under the skin. These are general US safety references, not a complete screening list for your device. [4]
Check the exact instructions and discuss suitability with a qualified healthcare professional, including pregnancy, breastfeeding, relevant illness or implants. Stop use for pain, burning, unusual heat or an unexpected reaction; seek medical advice for injury or continuing symptoms. Do not try to resolve a reaction by switching letters or increasing output. [4]
This guide does not establish that any particular machine is intended or authorized for home use. It provides no universal energy, duration, session schedule or body-area protocol.
Frequently asked questions
My manual only shows A, B and C. Is D missing?
Not necessarily. A different number of programs is a reason to verify the document’s model and revision. Do not infer an undocumented D program from another machine.
Does a software update mean the modes have changed?
An update alone does not establish a change in output. Ask for the release notes or written confirmation of whether mode definitions, defaults or instructions changed for your version.
Can I use a translated manual?
Use a translation confirmed for your exact model and revision. If timing, units or mode definitions differ between versions, obtain clarification; do not choose whichever version seems easier to follow.
What if the manual and a training video disagree?
Record the discrepancy and ask the manufacturer which current instruction applies to your unit. Do not average the advice or test both versions on yourself.
The next step is identification, not experimentation
For an A–D label to be useful, you need a matching definition, compatible attachment and documented limits. If one is missing, resolve that specific gap before selecting a program.
Sources and scope
- Ariana Spa Supplies: manuals resource library. Supplier page reviewed for its series/model organization; not clinical evidence.
- Supplier-hosted 101 English manual. Seven-page text reviewed as an interface example, not instructions for your machine; no clear A–D mapping established.
- FDA: ultrasonic therapy performance standard summary and technical material. Relevant scanned pages visually reviewed for output and indicator terminology; not a current legal compliance assessment.
- FDA: Non-Invasive Body Contouring Technologies. Official ultrasound safety section and suitability discussion; not proof of a home machine’s safety or authorization.
This article is for general educational purposes and does not provide medical advice. Follow the instructions for the specific device and consult a qualified healthcare professional about suitability and safety.