Cisco ONS 15454 Series Reference Manual page 51

ONS_15454_Reference_Manual_R8.5.x_--_Shelf_and_Backplane_Hardware
dual-hole lug. Figure 1-37 shows the location of the ground posts.
Figure 1-37: Ground Posts on the ONS 15454 Backplane
Alarm, Timing, LAN, and Craft Pin Connections
Caution! Always use the supplied ESD wristband when working with a powered ONS 15454. Plug the
wristband cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
The ONS 15454 has a backplane pin field located at the bottom of the backplane. The backplane pin field
provides 0.045 square inch (29 mm2) wire-wrap pins for enabling external alarms, timing input and output,
and craft interface terminals. This section describes the backplane pin field and the pin assignments for the
field. Figure 1-38 shows the wire-wrap pins on the backplane pin field. Beneath each wire-wrap pin is a
frame ground pin. Frame ground pins are labeled FG1, FG2, FG3, etc. Install the ground shield of the cables
connected to the backplane to the ground pin that corresponds to the pin field used.
Note: The AIC-I requires a shelf assembly running Software Release 3.4.0 or later. The backplane of the
ANSI shelf contains a wire-wrap field with pin assignment according to the layout in Figure 1-38. The shelf
assembly might be an existing shelf that has been upgraded to R3.4 or later. In this case the backplane pin
labeling appears as indicated in Figure 1-39. But you must use the pin assignments provided by the AIC-I as
shown in Figure 1-38.
Figure 1-38: ONS 15454 Backplane Pinouts (Release 3.4 or Later)
Power and Ground Description 51