Datasheet

Service Information 4
Keysight U2751A User’s and Service Guide 49
Upon replacing the relay(s), reset the relay cycle count to zero by issuing the
following SCPI command:
DIAGnostic:RELay:CYCLes:CLEar (@<ch_list>)
Separate the carrier and measurement board.
There are 32 relays as shown.
Turn to the opposite side of the measurement
board and ensure that only the defective relays
are desoldered.