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3.1.4 Removable Controller Card (Rear Panel)
The Rack Mount SSPA Controller card is a removable assembly located at the rear of
the SSPA. The controller card includes connections for the Switch (J3), Serial Main
(J4), Serial Local (J5), Programming (J6), Parallel I/O (J7), Link (J8) and Ethernet (J9)
ports.
To remove this card assembly, loosen the two restraining thumbscrews at the top left
and bottom right of the assembly. See
Figure 3-10
. Slide the assembly straight back
from the cavity, as shown in
Figure 3-11
.
A replacement controller card is available from the factory.
The DigiCore5 controller card is equipped with a configuration DIP switch block, S1.
This switch allows the adjustment of certain configuration parameters.
•
S1.1 - S1.6 — Factory use only; Preset position is ON-ON-ON-OFF-OFF-
OFF;
•
S1.7 - S1.8 — These settings allow Enable/Disable galvanic isolation of
the Main serial port (J4). Factory preset for these ports is OFF – OFF.
This configuration disconnects the Serial Main Ground pin from the chas-
sis ground. If, for any reason, the galvanic ground isolation is not desired,
this feature could be disabled by changing the position of switches S1.7 -
S1.8 to ON – ON.
Warning! Disabling galvanic ground isolation increases the risk of
serial port electrical damage during a lightning strike, or under
other ground potential difference issues. If galvanic isolation is
disabled, Teledyne Paradise Datacom suggests connecting or
disconnecting the wire harnesses to this port only when the equip-
ment is powered down.
Figure 3-10: Loosen Retaining
Thumb Screws
Figure 3-11: Remove Card to Access
Programming Connectors
Retaining Thumbscrews
Содержание HPAC-2005
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