
AcroPack Series ACPS3320
CompactPCI-Serial Carrier Board
- 10 -
FIELD GROUNDING CONSIDERATIONS
This board is non-isolated, since there is electrical continuity between the
PCIe bus and AcroPack module grounds. As such, the field I/O connections are
not isolated from the system. Care should be taken in designing installations
without isolation to avoid noise pickup and ground loops caused by multiple
ground connections.
CONNECTORS
The ACPS3320 carrier uses two AcroPack module field I/O connectors, two
mini-PCIe connectors, and three CompactPCI-Serial backplane connectors.
These are discussed in the following sections.
AcroPack Field I/O Connectors
The field side connector of AcroPack modules mate to Samtec
SS5-50-3.00-L-D-K-TR socket connectors on the carrier board.
This provides excellent connection integrity due to the gold plating in the
mating area. M2.5 screws and spacers provide additional stability for harsh
environments.
The functions of each of the Field I/O signals are defined by the installed
AcroPack model.
Table 1 Field I/O Pin Assignments
Carrier
P7, P8
Module Pin
Number
Field I/O Signal
2
2
Field I/O 1
1
1
Field I/O 2
4
4
Reserved/isolation
3
3
Reserved/isolation
6
6
Field I/O 3
5
5
Field I/O 4
8
8
Reserved/isolation
7
7
Reserved/isolation
10
10
Field I/O 5
9
9
Field I/O 6
12
12
Reserved/isolation
11
11
Reserved/isolation
14
14
Field I/O 7
13
13
Field I/O 8
16
16
Reserved/isolation
15
15
Reserved/isolation