1. Define the Acceleration That Must Be Measured
Begin with the measurement task. Describe what acceleration information the application must obtain and under what use conditions that information is needed. A required measurement envelope is a statement about useful measurement, rather than simply an exposure the component may encounter. Keeping that purpose explicit prevents the largest mechanical headline in a product description from becoming the range-selection criterion.
Separate events that the application needs to measure from events it only needs to withstand. Those requirements can coexist, but they answer different questions. A design may need useful measurements during an operating event while retaining a separate mechanical-survival requirement for another exposure. Ask the application team to distinguish the two purposes before candidates are compared under a general acceleration label.
Keep the measurement requirement linked to its design reference rather than filling it from a catalogue's highest stated figure. The sourcing comparison needs to know which requirement a proposed full-scale choice is intended to cover. This guide makes no numerical range recommendation. The appropriate choice depends on the application's accepted measurement needs and the exact accelerometer evidence used to review them.
2. Read Measurement Range and Shock Survival as Different Claims
The ADXL345 overview separately describes selectable measurement range and shock survival. Retain those headings as different statements about the named product. A measurement-range description concerns the measurement capability under its applicable conditions. A shock-survival description addresses another property. Putting both beside the same device name does not make them interchangeable limits or establish a measurement result at a survival exposure.
A survival statement should therefore not be entered in a comparison table as the acceleration that can be measured. It does not expand the documented full-scale measurement choice. Conversely, a selected measurement range should not be presented as the component's mechanical-survival disposition. The useful comparison keeps each requirement beside the corresponding manufacturer description, with the application decision attached to the correct subject.
Preserve the exact product reference when interpreting either statement. An overview for ADXL345 cannot establish another accelerometer's measurement envelope or transfer its mechanical description to a different family. If a candidate has only one of the two subjects documented in the available material, identify the missing requirement. Do not complete that comparison by borrowing a survival or measurement claim from a similar part.
3. Keep Resolution from Redefining the Measurement Envelope
Resolution is another property that needs its own role in the measurement requirement. The ADXL345 overview describes fixed and full-resolution choices separately from its shock-survival statement. Preserve the manufacturer's terminology without deriving sensitivity, accuracy or a numerical range from it. A resolution headline does not decide what acceleration the application needs to measure, and it cannot convert a mechanical-survival description into a measurement specification.
Ask which resolution-mode description is applicable to the required measurement comparison, while retaining the full-scale requirement independently. The purpose is to avoid letting one attractive feature hide an unanswered measurement question. This is a design-selection discussion. It does not inspect the present settings of surplus units, describe their former configuration or infer calibration from a catalogue's supported modes.
4. Put Each Event Against Its Intended Use
A useful enquiry can distinguish an operating movement that must be measured from a separate exposure that the component only needs to withstand. Identify the purpose of each event without assigning a numerical value in this qualitative guide. An event belongs in both reviews when the application requires both useful measurement and survival through that event. The common word acceleration should not merge those acceptance questions.
When comparing candidate references, check which heading a quoted statement actually comes from before copying it into the requirement. A survival headline entered under full-scale range would change the meaning of the source. Likewise, a supported measurement range entered as evidence of mechanical survival would leave the second requirement unanswered. Preserve the source heading and its role, rather than ranking dissimilar statements as though they were competing range values.
For an accelerometer enquiry, communicate the required measurement task and the separately identified exposure purpose. Request the exact device's applicable measurement-range evidence under the first heading and its mechanical-survival description under the second. The reviewed resolution description remains part of the measurement discussion. This prepares a technical comparison; it does not prescribe an exposure, define a pass/fail test or claim valid readings under an unassessed condition.
Sources and further reading
Analog Devices' ADXL345 overview separately identifies measurement range, resolution choices and shock survival. Only that qualitative distinction is used; no numerical recommendation, shock test, calibration or present-setting assessment is provided.