Rohde and Schwarz ZNB8

B1	Bias Tees
B10	GPIB interface
B22	Extended power range down to -80dBm, for R&S®ZNB8 2-port (retrofittable in factory
B31	Receiver step attenuator port 1, electronical, 30dB in 10dB steps, for R&S®ZNB8
B32	Receiver step attenuator port 2, electronical, 30dB in 10dB steps, for R&S®ZNB8
B4	OCXO-Precision Frequency Reference
B81	DC Inputs
DCV-2	Documentation of calibration values
DCV-ZP	Printout of DCV (additional, in combination with DCV-Option only)
K17	10MHz receiver bandwidth (software license)
K17	10MHz receiver bandwidth (unregistered license)
K17	10MHz receiver bandwidth (timed license, 1 month)
K17	10MHz receiver bandwidth (timed license, 12 months)
K17	10MHz receiver bandwidth (timed license, 3 months)
K17	10MHz receiver bandwidth (timed license, 6 months)
K2	Time domain analysis (unregistered license)
K2	Time domain analysis (portable license)
K2	Time domain analysis (timed license, 1 month)
K2	Time domain analysis (timed license, 12 months)
K2	Time domain analysis (timed license, 3 months)
K2	Time domain analysis (timed license, 6 months)
K2	Time domain analysis (software license)