What is the PPS voltage of my LD4? Updated 19 April 2018 10:46 Follow The PPS voltage of the LD4 is 3.2v unloaded and 2.0v with a 50 Ω load. Related articles How do I configure my LD7 to use the Apex service? How do I change the PPP Calculation of the LD4? I have changed my PPP service and my LD4 solution has become unstable, how do I resolve this? Accessing an LD4 Signal Status using L-band Control Quantum User Manual Comments 0 comments Please sign in to leave a comment.