The specifications of the ripple noise in the DC mode are as follows:
PCR500LE, PCR1000LE and PCR2000LE: 0.15 Vrms or less
PCR3000LE, PCR4000LE: 0.2 Vrms or less
PCR6000LE and PCR9000LE: 0.25 Vrms or less
For the details, read the user’s manual – chapter of Specifications.