The R&SZVB8-B21, R&SZVB8-B22, and R&SZVB8-B23 options can be installed in the R&SZVB4 and R&SZVB8 models on max. two test ports in each case.
Authorized Distributor of:
AEMC Extech Hioki Instek Meterman Pomona Rohde & Schwarz