As part of the DWM1000 production the crystal has been trimmed and its trim value is stored in the OTP. TX power and RX sensitivity are tested but not calibrated. Further information can be found in chapter 8 DW1000 Calibration of the DW1000 user manual
The DW1000 user manual is available from http://www.decawave.com/support.
Yes, the DWM1000 meets RoHS 6 requirements as laid down by the 2011/65/EU RoHS2 Directive.
As there is no microprocessor on the DWM1000 module it cannot be certified as delivered by Decawave because its mode of operation is not defined. The mode of operation is decided only when a customer connects a microprocessor and programs the module as part of their end application.