18
Keysight 34931A-34933A User’s Guide
34931A Simplified Schematic
ABus1
DMM
(MEAS)
ABus2
DMM
(SENS)
ABus3
ABus4
922
923
924
921
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
L
L
L
L
H
H
H
H
H
H
H
L
L
L
L
H
H
L
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
Matrix 1
Matrix 2
Analog Buses
Row 1
Row 2
Row 3
Row 4
Row 5
Row 6
Row 7
Row 8
Col 1
Col 2
Col 3
Col 4
Col 5
Col 6
Col 7
Col 8
Col 1
Col 2
Col 3
Col 4
Col 5
Col 6
Col 7
Col 8
NOTE: Matrix 1 and Matrix 2 are
electrically separate from one another.
NOTE:
Matrix Relays: Armature latching
Analog Bus Relays: Armature non-latching
NOTE: Three-digit channel numbers
are derived from the intersection of
the rows and columns, columns
having two digits. The intersection
shown here represents Channel 304
(Row 3, Column 4)