When a tablet receives a measurement from a BLE instrument, compare the displayed and saved engineering value with the instrument vendor's data definition. Receiving bytes successfully is not proof that the app interpreted their units or scaling correctly.
Request a data dictionary
| Definition | Question for the instrument vendor |
|---|---|
| Service and characteristic | Which documented value carries the required measurement? |
| Format and scaling | How is the raw value converted to the intended number? |
| Units and status | What unit applies, and how is an invalid reading indicated? |
| Source and timing | Which instrument and measurement event does the value represent? |
Android's BLE overview describes services and characteristics and notes that descriptors can describe values, including units. Your specific instrument's documentation must define the actual encoding.
Evaluate against a known sample
Have the instrument owner provide an approved simulator or reference output. Compare raw input, converted on-screen value and the reopened record. Include a vendor-defined invalid state. Ask a qualified reviewer to approve interpretation; this software check does not calibrate the instrument or prove measurement accuracy.
The current T1 description does not establish support for a particular BLE instrument, characteristic or conversion function. Confirm the device configuration and app integration before ordering.
No measurement, calibration or BLE trial is reported here. Use the data-freshness checklist alongside the conversion check. Send Phonemax the instrument's interface specification.
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