When set to true(1), the CM will execute its DS characterization routine using the frequency specified by cmDsCalFrequency, and the modulation type specified by cmDsCalModulation. Prior to executing the DS characterization routine, cmDsCalLockNow must have been set to true(1) and the lock must have been successful, as indicated by cmDsCalQamLocked and cmDsCalFecLocked both being true(1). The SET operation will not return until the routine is complete, so the SNMP manager's timeout value may need to be increased to several seconds. Once the DS characterization is complete, the resulting data may be read from the objects cmDsCalNormalLDAIT, cmDsCalNormalLDAIF, cmDsCalNormalLDAII, cmDsCalFrozenLDAIT, cmDsCalFrozenLDAIF, cmDsCalFrozenLDAII, cmDsCalFGain, cmDsCalTGain, and cmDsCalIGain. Always returns false(2) when read.