7
5.25 "
17 "
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Alarm Board
Connector
Fuses
F2
F1
J10
J9
J8
J7
J6
J4
J3
J5
Digital
Telephony Interface
Board Connectors
Analog
Telephony Interface
Board Connectors
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Serial Ports
SCSI
Terminator
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.
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Ethernet Transceiver
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Parallel
Port
F3
Fuse
J12
P1
P2
P4
P3
1.3.3 Backplane Description
The exterior backplane which is located at the rear of the McIAS 1610 unit consists
of screw terminals, fuses, and several different types of connectors. See Figure 1-3
below.
Five screw terminals located in the upper left corner of the exterior backplane provide
the following power connections: Signal Ground, Signal Battery, Frame, -48v Return
and -48v Negative Supply. Refer to Section 2.4 for a detailed description of each
connection.
Three fuses are also located in the upper left section. F1, the main fuse, is 3 amps.
When -48v system power is applied, it goes directly to the power supply through this
fuse. F2, the signal battery fuse, is 1 amp. F3, the fuse that provides power to the
SCSI terminator, is 1 amp.
Backplane Connector Descriptions
(functions dependent on McIAS AppSoft Module)
!
!
Serial Ports
McIAS 1610/68:
Local Console (P1)
Modem (P2)
SMDI, if installed, and/or printer (P3 and/or P4, interchangeably)
McIAS 1610/IP:
Console (P1)
Modem (P2)
Local Terminal (P3)
SMDI, if installed (P4)
Figure 1-3
McIAS 1610 Backplane
Содержание McIAS 1610 Series
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