Specications
Frequency range
85320A/B-H20 Fundamental mixing mode 300 MHz to 3 GHz
85320A/B  Fundamental mixing mode 1 to 18 GHz
85320A-H50 Fundamental mixing mode 2 to 18 GHz
85320A-H50 Third-harmonic mode 18 to 50 GHz
Maximum input levels
Maximum DC voltage at input 10 volts
Maximum signal level at RF or LO inputs  +20 dBm (Option H20) +26 dBm (standard, 
Option H50)
Optimum input levels (when connected to 85309B LO/ IF Distribution Unit)
LO input power +11 to +14 dBm   
RF input power < –24 dBm
Table 9. LO signal power
 
LO frequency
Minimum  
power
Typical 
power
Maximum 
power
85320A/B-H20 0.3 to 3 GHz +8 dBm +10 dBm +16 dBm
85320A/B 1 to 18 GHz +7.5 dBm +11 dBm +16 dBm
85320A/B-H50 2 to 18 GHz +12 dBm +14 dBm +17 dBm
Table 10. Conversion loss
Frequency  
range
LO  
harmonic 
Typical  
loss 
Maximum  
loss 
85320A/B-H20 300 MHz  
to 3 GHz
1 –10 dB –14 dB
85320A/B 1 to 2 GHz 
2 to 3 GHz 
3 to 5 GHz 
5 to 18 GHz 
6 to 8 GHz 
8 to 16 GHz 
16 to 26.5 GHz 
1 
1 
1 
1 
3 
3 
3 
–18.0 dB 
–12.0 dB 
–11.0 dB 
–14.7 dB 
–23.8 dB 
–26.5 dB 
–28.5 dB 
–22 dB 
–16 dB 
–15 dB 
–17 dB 
–26 dB 
–28 dB 
–33 dB 
85320A/B-H50 2 to 18 GHz
18 to 50 GHz
1
3
–12 dB
–28 dB
 
60 | Keysight | Antenna Test – Selection Guide