903-0628-00 Rev. 1
Model 903-HD User's Guide – FMB-X-2.5
Focal Technologies Corp.
Page 3-10
3.2.2 High Density -X Backplanes
Card P/N: 903-7212-00 (12 HP BP); 903-7207-00 (16 HP BP)
The high density -X backplanes described in this section are used on the 4VID (12 HP BP P/N:
903-7212-00) and 8VID (16 HP BP P/N: 903-7207-00) remote modules. These backplanes are +24 VDC
input.
PCBA views of the 12 HP -X backplane PCB (CBP-100-XR) and the 16 HP -X backplane PCB (CBP-200-XR)
are given in Figure 3-8 and Figure 3-9 respectively. These figures show the side that faces outwards from the
back of the remote chassis with the plastic cover removed. The J5 header is connected to a 24 VDC fan on
the remote rack. Only a 24 VDC input power is required at J6.
The remote module does not have a power switch. Connection of the remote module power supply to primary
supply rails immediately turns the module on. Status of the three internal rail voltages (+5, +12, -12 VDC) is
indicated by the diagnostics software.
The primary input to the remote module is protected with a 5 A time delay fuse, F3, located just below the
power input J6 connector. This fuse may be replaced, if necessary, with the spare fuse F2 located nearby.
PROGRAMMING HEADER
(FACTORY USE)
1
2
1 2
J6
F2
F3
J5
U10
SPARE PRIMARY FUSE
0454005, 5 A SMT,
TIME DELAY
PRIMARY FUSE
0454005, 5 A SMT,
TIME DELAY
PRIMARY INPUT
PIN 1 = DGND
PIN 2 = +24 VDC
DC-DC CONVERTER
+24 VDC INPUT
+12/-12 VDC OUTPUT
FAN HEADER
PIN 1 = + 24 VDC OUT
PIN 2 = DGND
J4
Figure 3-8: 12 HP High Density Remote Backplane PCBA (+24 VDC Input)
Summary of Contents for Focal 903
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