PDS/PPI node factory. Examples include: vap+pdsppi:id=PPI/GOMW_5004/DATA/MAG/SATELLITES/EUROPA/ORB25_EUR_EPHIO vap+pdsppi:id=PPI/GO-J-MAG-3-RDR-HIGHRES-V1.0/DATA/SURVEY/HIGH_RES/ORB01_PSX_SYS3&ds=B-FIELD%20MAGNITUDE