If 2 calibrations of the same type are loaded, they are loaded side by side vertically the comparison between them is automatically activated.
The ‘Also compare different types of calibrations‘ option on the options page allows you to compare calibrations of different types as well.
If using a device generated from an ELF file the comparison highlights the differences between the 2 calibrations in 4 different modes + the ‘comparison disabled’ mode .
If using a device based on the static table, the comparison highlights the differences between the 2 calibrations in 2 different modes + the ‘comparison disabled’ mode .
Switching from one comparison mode to another is handled via the command
If a device generated from an ELF file is used, the possible comparison types are:
- Comparison of binary values of variables that have the same factory name
- Comparison of scaled values of variables that have the same factory name
- Comparison of binary values of variables that have the same display identifier
- Comparison of scaled values of variables that have the same display identifier
- No comparison
If you are using a device based on the static table, the possible types of comparison are:
- Comparison of binary values of variables that have the same offset
- Comparison of scaled values of variables that have the same offset (active only if the descriptors are the same)
- No comparison
The type of comparison that is always possible is the byte-to-byte comparison which does not consider engineering values.
Under certain conditions, the comparison by engineering/scaled values is also possible, which is the most complete and meaningful type of comparison. If the devices of the 2 calibrations are elf-oriented, the comparison works even if the descriptors are structured differently because the variables to be related are identified through the factory name or display identifier. If, on the other hand, the devices of the 2 calibrations are not ELF oriented , the comparison by engineering values is possible if the 2 descriptors have the same structure, i.e. the same elements in the same order for the common part. The common part are the elements of the shorter descriptor.