Keysight PNA Series - Page 59

85320A test mixers
The 85320A, 85320A-H20 and 85320A-H50 contain a diplexer that combines the LO
input and IF output onto a single coaxial connector, which is useful for systems using a
rotary joint.
Figure 42. 85320A test mixer.
85320B reference mixers
The 85320B, 85320B-H20, 85320B-H50 contain a leveling coupler/detector that pro-
vides a leveling signal to the 85309B LO/IF distribution unit, ensuring leveled LO drive
power to the mixer.
Figure 43. 85320B reference mixer.
3 dB attenuator
Diplexer
LO
IF
Mixer
Connector type varies
with option number
RF input
LO input
IF output
Type-N
connector
3 dB attenuator
Mixer
RF input
LO in
IF out Det. out
LO
IF
Connector type varies
with option number
Type-N female connector
59 | Keysight | Antenna Test – Selection Guide