Matrix Switch Modules 5
34980A User’s Guide 183
34933A Simplified Schematic for One-Wire Mode
H
H
H
H
ABus1
DMM
(MEAS)
921
ABus2
DMM
(SENS)
922
ABus3
923
ABus4
924
H
H
L
L
H
H
L
L
H
H
H
H
2C2L
2C2
bypass 2C8
2C8
bypass2C1
2C1
bypass
L
L
H
H
1C2
1C2
bypass 1C8
1C8
bypass1C1
1C1
bypass
3C2
3C2
bypass 3C8
3C8
bypass3C1
3C1
bypass
4C2
4C2
bypass 4C8
4C8
bypass4C1
4C1
bypass
Matrix 1
Matrix 3
Matrix 4
Matrix 2
Row 1
Row 2
Row 3
Row 4
Row 1
Row 2
Row 3
Row 4
Row 1
Row 2
Row 3
Row 4
Row 1
Row 2
Row 3
Row 4
Analog Buses
Row 1
Row 1
Row 2
Row 2
Row 3
Row 3
Row 4
Row 4
L
L
L
L
L
L
L
L
NOTE:
Matrix Relays: Reed non-latching
Analog Bus Relays: Armature non-latching
NOTE: Although rows are numbered the same
across the matrices, they are electrically
separate from one another.
Channel 218
(Matrix 2, Row 1, Column 8)
NOTE: All series resistors shown are 100
Ω.
NOTE: Three-digit channel
numbers are derived from a
specific matrix number and the
intersection of rows and
columns on that matrix. The
channel shown here is 132
(Matrix 1, Row 3, Column 2.)
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