FieldFox supports three power sensor options, 302, 330, and 208.
Option 302 is for average power measurements. Supports both sensor types, average and peak. Limited “peak measurement” functionality.
Option 330 is for pulse measurements. Only supports average AND peak sensors. Does not support average only sensors.
Option 208 adds swept-frequency measurement capability to option 302 (must order both 302 and 208).
 

All three options support both USB and LAN power sensors (despite the title for 302 saying USB power sensor).
 

Model Number USB or LAN Sensor Type Frequency and Power Range FieldFox CPU Requirements
U2000A USB  Average 10 MHz - 18 GHz, -60 to +20 dBm            
U2000B USB  Average 10 MHz - 18 GHz, -30 to +44 dBm            
U2000H USB  Average 10 MHz - 18 GHz, -50 to +30 dBm  
U2001A USB Average 10 MHz - 6 GHz, -60 to +25 dBm            
U2001B USB  Average 10 MHz - 6 GHz, -30 to +44 dBm            
U2001H USB  Average 10 MHz - 6 GHz, -50 to +30 dBm            
U2002A USB  Average 50 MHz - 24 GHz, -60 to +20 dBm            
U2002H USB  Average 50 MHz - 24 GHz, -50 to +30 dBm            
U2004A USB  Average 9 kHz - 6 GHz, -60 to +20 dBm            
U2021XA USB  Average and peak 50 MHz – 18 GHz, -30 to +20 dBm            
U2022XA USB  Average and peak 50 MHz – 40 GHz, -30 to +20 dBm            
U2041XA USB Average 10 MHz to 6 GHz, -70 to +26 dBm  
U2042XA USB  Average and peak 10 MHz to 6 GHz, -70 to +26 dBm            
U2043XA USB  Average 10 MHz to 18 GHz, -70 to +26 dBm            
U2044XA USB  Average and peak 10 MHz to 18 GHz, -70 to +26 dBm            
U2051XA USB Average 10 MHz to 6 GHz, -70 to +26 dBm CPU2
U2052XA USB Average 10 MHz to 18 GHz, -70 to +26 dBm CPU2
U2053XA USB Average 10 MHz to 33 GHz, -70 to +26 dBm CPU2 
U2054XA USB Average 10 MHz to 40 GHz, -70 to +20 dBm CPU2 
U2055XA USB Average 10 MHz to 50/53 GHz, -70 to +20 dBm CPU2
U2056XA USB Average 10 MHz to 54 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz) CPU2
U2057XA USB Average 10 MHz to 67 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz), to +10 dBm (≤67 GHz) CPU2
U2061XA USB Average and peak 10 MHz to 6 GHz, -70 to +26 dBm CPU2
U2063XA USB  Average and peak 10 MHz to 33 GHz, -70 to +20 dBm CPU2          
U2064XA USB Average and peak 10 MHz to 40 GHz, -70 to +20 dBm CPU2 
U2065XA USB Average and peak 10 MHz to 50/53 GHz, -70 to +20 dBm CPU2 
U2066XA USB Average and peak 10 MHz to 54 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz) CPU2
U2067XA USB Average and peak 10 MHz to 67 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz), to +10 dBm (≤67 GHz) CPU2
U8481A USB Average 10 MHz – 18 GHz, -35 to +20 dBm  
U8485A USB Average 10 MHz – 33 GHz, -35 to +20 dBm  
U8487A USB Average 10 MHz – 50 GHz, -35 to +20 dBm  
U8488A USB Average 10 MHz – 67 GHz, -35 to +20 dBm  
U8489A USB Average DC to 120 GHz, -35 to +20 dBm  
L2051XA LAN Average 10 MHz to 6 GHz, -70 to +26 dBm CPU2
L2052XA LAN Average 10 MHz to 18 GHz, -70 to +26 dBm CPU2
L2053XA LAN Average 10 MHz to 33 GHz, -70 to +26 dBm CPU2
L2054XA LAN Average 10 MHz to 40 GHz, -70 to +20 dBm CPU2
L2055XA LAN Average 10 MHz to 50/53 GHz, -70 to +20 dBm CPU2
L2056XA LAN Average 10 MHz to 54 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz) CPU2
L2057XA LAN Average 10 MHz to 67 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz), to +10 dBm (≤67 GHz) CPU2
L2061XA LAN Average and peak 10 MHz to 6 GHz, -70 to +26 dBm CPU2
L2062XA LAN Average and peak 10 MHz to 18 GHz, -70 to +26 dBm CPU2
L2063XA LAN Average and peak 10 MHz to 33 GHz, -70 to +26 dBm CPU2
L2064XA LAN Average and peak 10 MHz to 40 GHz, -70 to +20 dBm CPU2
L2065XA LAN Average and peak 10 MHz to 50/53 GHz, -70 to +20 dBm CPU2
L2066XA LAN Average and peak 10 MHz to 54 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz) CPU2
L2067XA LAN Average and peak 10 MHz to 67 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz), to +10 dBm (≤67 GHz) CPU2
L2065XT LAN Average and peak 10 MHz to 53 GHz, -70 to +20 dBm CPU2
L2066XT LAN Thermal Vacuum Compliance 10 MHz to 54 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz) CPU2
L2067XT LAN Thermal Vacuum Compliance 10 MHz to 67 GHz, -70 to +20 dBm (≤50 GHz), to +15 dBm (≤54 GHz), to +10 dBm (≤67 GHz) CPU2
U2049XA LAN Average and peak 10 MHz to 33 GHz, -70 to +20 dBm CPU2