Module Architecture - 40-145-001/101/201 - Pickering PXI 40-145 User Manual

SECTION 4 - PROGRAMMING GUIDE
MODULE ARCHITECTURE - 40-148
The 40-148 is an array of 32, 48 or 64 uncommitted changeover relays. In the default state, all signal paths are
between the C terminal and the corresponding B terminal. Energising a particular relay disconnects the B terminal
and creates a signal path between the C and A terminals. The relay module's switching architectures are shown in
their default state in the diagram below:
B1
A1
C1
B32
A32
C32
40-148-001 (32 x SPDT)
One sub-unit is used to control all the module's relays as shown below. Enabling a particular bit opens the C to B
signal path and closes the C to A signal path.
Sub-Unit Bit
1 1
1 2
1 3
1 4
1 31
1 32
1 33
1 34
1 47
1 48
1 49
1 50
1 61
1 62
1 63
1 64
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B1
A1
C1
B2
A2
C2
B48
A48
C48
40-148-101 (48 x SPDT)
40-148-001 Signal Path
(with relay energised)
C1 to A1
C2 to A2
C3 to A3
C4 to A4
C31 to A31
C32 to A32
—
—
—
—
—
—
—
—
—
—
HIGH DENSITY RELAY MODULES 40-145/146/148
B1
A1
C1
B2
A2
C2
B3
A3
C3
B64
A64
C64
40-148-201 (64 x SPDT)
40-148-101 Signal Path
(with relay energised)
C1 to A1
C2 to A2
C3 to A3
C4 to A4
C31 to A31
C32 to A32
C33 to A33
C34 to A34
C47 to A47
C48 to A48
—
—
—
—
—
—
pickering
40-148-201 Signal Path
(with relay energised)
C1 to A1
C2 to A2
C3 to A3
C4 to A4
C31 to A31
C32 to A32
C33 to A33
C34 to A34
C47 to A47
C48 to A48
C49 to A49
C50 to A50
C61 to A61
C62 to A62
C63 to A63
C64 to A64