58 TimeHub 5500 User’s Guide 097-55501-01 Revision M – January 2009
Chapter 2 Engineering Ordering Information
Card Overview
The LED status indicators on the DS1/CC Driver card are described in Table 2-7.
5 MHz Output Driver Card
This section describes the TimeHub 5 MHz Output Driver card (part number
090-55583-01). It provides details on operation, configuration, alarms, events, and
specifications.
Functional Overview
The 5MHz output signal is derived from one of the three 1.544 Mbps sync signals on
the backplane (from CLKA, CLKB, and the passthrough clock from the IMC). The
phased-lock loops and dividers in the FPGAs synthesize the 5 MHz outputs using
the 8 kHz intermediate frequency.
Table 2-7. LEDs on the DS1/CC Driver Card Front Panel
Indicator Color Description
Power Green
On = The card is receiving power
Off = No power present
Fuse Red
On = The Output Driver card fuse is open
Off = The Output Driver card fuse is not open
Alarm Red
On = An alarm condition is present
Off = No alarm condition is present
Fail Red
On = A hardware or firmware fault has occurred
Off = No hardware or firmware faults have occurred
Ports 1–20
DS1
Green
On = A DS1 Output Connector module is connected to
ports 1 through 20
Off = There is no Output Connector module connected
to ports 1 through 20; no outputs can be generated
Ports 1–20
CC
Green
On = A CC Output Connector module is connected to
ports 1 through 20
Off = There is no Output Connector module connected
to ports 1 through 20; no outputs can be generated
Ports 21–40
DS1
Green
On = A DS1 Output Connector module is connected to
ports 21 through 40
Off = There is no Output Connector module connected
to ports 21 through 40; no outputs can be generated
Ports 21–40
CC
Green
On = A CC Output Connector module is connected to
ports 21 through 40
Off = There is no Output Connector module connected
to ports 21 through 40; no outputs can be generated
To Next Page
Loading...
Need help?
General
