Rohde and Schwarz ESL6.16

C3	Three years of standard calibration coverage based on the R&S recommended calibration interval - includes test data. ( )
C5	Five years of standard calibration coverage based on the R&S recommended calibration interval - includes test data. ( )
DCV-ZP	Printout of DCV (additional, in combination with DCV-Option only)
FSL-B10	GPIB interface
FSL-B22	RF preamplifier, gain 20 dB (software license)
FSL-B30	DC power supply 12 - 28 V
FSL-B31	NiMH battery pack
FSL-B4	OCXO reference frequency
FSL-B5	Additional interfaces video/IF-output, power meter 28 V - DC for noise source
FSL-B8	Gated sweep function (for R&S®FSL and R&S®ZVL w. R&S®ZVL-K1) (software license)
FSL-K30	Application firmware for noise figure and gain measurements (for R&S®FSL and R&S®ZVL w. R&S®ZVL-K1)
FSL-K7	Analogue demodulation AM/FM/PM (for R&S®FSL and R&S®ZVL w. R&S®ZVL-K1) (software license)
FSL-K9	Power sensor measurements with NRP (software license)
R3	Three years of depot repair coverage, including standard recalibration and test data if necessary to complete the repair.
R5	Five years of depot repair coverage, including standard recalibration and test data if necessary to complete the repair.