FSE-B1: Colour Display
FSE-B2: 7GHz Frequency Extension
FSE-B3: TV Demodulator
FSE-B4: Low Phase Noise and OCXO
FSE-B5: FFT Filter (1 HZ to 1 KHz)
FSE-B7: Vector Signal Analyzer
FSE-B8: Tracking Generator (9 KHZ to 3.5 GHz)
FSE-B9: Tracking Generator with I/Q Modulator (9 KHZ to 3.5 GHz)
FSE-B12: Switchable Attenuator for Tracking Generators FSE-B8/9/10/11 (0 to 70 dB)
FSE-B15: Computer Function Additional use of 486 processor for DOS or Windows applications
FSE-B16: Ethernet Interface LAN integration for use in production
FSE-B17: 2nd IEC/IEEE-Bus Interface
FSE-B22: Increased Level Accuracy up to 2 GHz
FSE-K10: Application Firmware for mobile radio transmitter measurements to GSM900 specs 11.20 (mobiles),GSM 1800 and GSM 1900
FSE-K11: Application Firmware for mobile radio transmitter measurements to GSM900 specs 11.20 (BTS),GSM 1800 and GSM 1900
FSE-K3: Noise Measurement Software