MV-32/64 Multiviewer
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Installation
Issue 1 Rev 11
Page 21
© 2014 Snell Limited
3.5 Serial port assignments
Each multiviewer is equipped with a serial data port that can be configured for either RS232
or RS422 operation. The mode of operation is set by means of jumpers (J1, J13 and J14) on
the CPU board.
The pin assignment of the connector is given in section 5.1.1.
Jumpers J1, J13 and J14 are located on the Controller (CPU) card. Access requires the
removal of the CPU card from the front of the unit with the power removed.
Fig 8. shows the CPU card jumpers and Table 2. shows the jumper settings.
Note:
Only the upper port is active on the single type MV-32/MV-64 Multiviewer frame. The lower
port is only used for the dual MV-32 Multiviewer type frame, where it serves the system on
the left side of the frame when viewed from the front.
Fig 8.
MV-32/MV-64 CPU card showing jumper settings.
Jumper
Position 1/2
Position 2/3
J1
(pair)
used for debugging
normal
J13
(pair)
RS422 (set in conjunction with J14)
RS232 (set in conjunction with J14)
J14
(single)
RS422 (set in conjunction with J13)
RS232 (set in conjunction with J13)
Table 2.
MV-32/MV-64 CPU Jumper settings.
Important:
•
Only pin 1 of each jumper is indicated on the PCB.
•
Other CPU card settings and controls are for factory use only.
Jumper J13
Jumper J14
Jumper J1