Sony XR-7600 Mode D'emploi page 9

[When a Diversity Antenna is Used — DIVERSITY switch
This unit can be connected with diversity antennas. If you use
this unit with the diversity antennas, set the DIVERSITY switch
located at the bottom of the unit to the ON position to activate
the diversity system.
Reset button
\er
Use a ball-point pen or a similar object.
Whe-1 you connect only one antenna
If you do not use the diversity system and connect only one
anterina, connect the antenna to the MAIN connector of this
unit and set the DIVERSITY switch to the OFF position.
Note
Be sure to press the reset button after changing the position
of the switch.