# Calibration (`calibration`)

## Quick Summary

## Sub-Type (`subType`)

The calibration sub-type of device event represents a user's manual entry of a self-monitored glucose (SMBG) value to calibrate a continuous glucose monitoring (CGM) device.

## Examples


```json Example (ingestion)
{
    "type": "deviceEvent",
    "subType": "calibration",
    "units": "mg/dL",
    "value": 129,
    "clockDriftOffset": 0,
    "conversionOffset": 0,
    "deviceId": "DevId0987654321",
    "deviceTime": "2018-05-14T18:17:08",
    "time": "2018-05-14T08:17:08.097Z",
    "timezoneOffset": 600,
    "uploadId": "SampleUploadId"
}
```


```json Example (storage)
{
    "type": "deviceEvent",
    "subType": "calibration",
    "units": "mmol/L",
    "value": 17.873408531166618,
    "_active": true,
    "_groupId": "abcdef",
    "_schemaVersion": 0,
    "_version": 0,
    "clockDriftOffset": 0,
    "conversionOffset": 0,
    "createdTime": "2018-05-14T08:17:13.097Z",
    "deviceId": "DevId0987654321",
    "deviceTime": "2018-05-14T18:17:08",
    "guid": "26c9190e-8bc5-4d39-82ff-5085275207fb",
    "id": "5637b3ce3ff24eaea5006d22d79b62ea",
    "time": "2018-05-14T08:17:08.097Z",
    "timezoneOffset": 600,
    "uploadId": "SampleUploadId"
}
```

## Keep Reading

* [Alarm](/docs/device-data/data-types/device-event/alarm)
* [Common Fields](/docs/device-data/common-fields)
* [Continuous Blood Glucose (CBG)](/docs/device-data/data-types/cbg)
* [Device Event](/docs/device-data/data-types/device-event)
* [Prime](/docs/device-data/data-types/device-event/prime)
* [Pump Settings](/docs/device-data/data-types/pump-settings)
* [Pump Settings Override](/docs/device-data/data-types/device-event/pump-settings-override)
* [Reservoir Change](/docs/device-data/data-types/device-event/reservoir-change)
* [Status](/docs/device-data/data-types/device-event/status)
* [Time Change](/docs/device-data/data-types/device-event/time-change)