nvent Schroff 14579-040, Руководство пользователя

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14579-040 (PXIe System)
12 18 Slot PXIe Backplane (23007-518) R1.5, January 2021
3.6 PXI Trigger Bus
The PXIe chassis trigger bus is divided into 3 isolated trigger bus segments with 8 trigger lines
each.
• Trigger segment 1 covers slot 1 through 6
• Trigger segment 2 covers slot 7 through 12
• Trigger segment 3 covers slot 13 through 18
Through the PXI trigger bridge, each trigger line of a segment can be individually routed in
either direction to the other segment.
The trigger bridges are controlled by the CMM.
1
2 3 4 6 7 8 5
H H
10
11 12
9
H H
Trigger Segment I Bus
P
XI T
ri
g
ge
r
B
ri
dg
e
Trigger Segment I Bus I
CMM
Chassis Manager
I²C
H H H
16
17 18
H H
P
XI T
ri
g
ge
r
B
ri
dg
e
Trigger Segment I Bus II
H
13
14 15
H H H
I²C
H H H H
By default the 3 trigger bus segments are isolated, the trigger bridges are disabled. To
enable the trigger bridges and set the direction of the routing, you have to access the
CMM‘s I²C register with the Schroff Embedded Controller or another appropriately
configured and programmed system controller.
For further information see CMM User Guide 63972-391