> For the complete documentation index, see [llms.txt](https://docs.intrepidcs.com/vspy-3-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.intrepidcs.com/vspy-3-documentation/vehicle-spy-main-menus/main-menu-spy-networks/message-editor/message-signals/message-signal-format-and-units.md).

# Message Signal Format and Units

When decoding an [analog](/vspy-3-documentation/vehicle-spy-main-menus/main-menu-spy-networks/message-editor/message-signals/message-signal-type-analog.md) or [digital](/vspy-3-documentation/vehicle-spy-main-menus/main-menu-spy-networks/message-editor/message-signals/message-signal-type-digital.md) signal, the display format can be specified. For example, analog Engine RPM signal could be displayed as 1000.23423 or 1000.2. Many formats are available in the pulldown lists as shown in Figures 1 and 2.

Below are some examples to help explain each of the analog format categories:

* 0 = rounded integer
* 0.0 = rounded to 1 decimal place
* 0.00E+00 = scientific notation rounded to 2 decimal places
* 0.000 eng = 1 letter engineering (i.e. m, k, etc.) rounded to 3 decimal places
* 0.0 engf = multi-letter formal engineering (i.e. milli, kilo, etc.) rounded to 1 decimal place
* XXXX hex = 4 characters of hexadecimal
* XX bin = 16 bits of binary

Units can be more useful when combined with the "eng" or "engf" formats. For example, "0 eng" format with units V would format as follows:\\

* 0.010 V as 10 mV
* 1200 V as 1 kV
* 0.000233 V as 233 uV

For digital signals, if the format list does not have what is needed (like Right/Left), type in any desired format that corresponds with binary 1/0.

![Figure 1: Partial list of analog formats available.](https://3170208387-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FL6lcovCpkhoS9uTOFtEp%2Fuploads%2F8fF19uCReuxGRDyINuc9%2Fspyinformat1.gif?alt=media\&token=77a1544a-a66c-490a-a090-562fec53da24)

![Figure 2: List of digital formats or type your own if you wish.](https://3170208387-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FL6lcovCpkhoS9uTOFtEp%2Fuploads%2FIas7iTE3QY0QMJCK51GH%2Fspyinformat2.gif?alt=media\&token=c87e84ab-eb23-41bc-ad20-59cb2e94dfd8)


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