TTC calibration mode not working with the TTC generator
The TTC calibration mode is, surprisingly, functional only with the TTC backplane commands and not with the TTC generator. This is considered a bug since using the TTC calibration mode (i.e. replace L1As with calibration pulses and delay the L1A) regardless of the TTC source helps in writing a coherent software (e.g. never use the TTC generator to generate calibration pulses).