Concurrent Technologies RCIM, User Manual

Page: 14 / 102

RCIM User’s Guide
2
-
4
followed by brief intervals of bright RED and GREEN as a test. During normal operation
of the board the LEDs function as follows:
Input and Output Cables and Connectors
1
The RCIM IV uses a pair of standard SFP (small form-factor pluggable) connectors
installed in cages to interface to the RCIM IV cable. The cable is used to communicate
interrupts, time stamps and a reference clock between RCIM IV boards. The output cable
connector is used when the RCIM is either the master or a slave in the middle of an RCIM
chain (see page 2-14 for a description of RCIM modes). The input cable connector is used
when the RCIM is acting in slave mode or in the middle of an RCIM chain. The cable part
number (HS002-3CBL-xx where xx is length in meters) includes an LC fiber optic cable
and two SFPs that are installed in the empty cages on the master and slave RCIMs. Refer
to the section “Daisy Chain Cable” for more information about the cable.
LED description Function
O u t p u t
S t a t u s
LED RED solid 10 MHz clock failure
RED 2/sec flash POSIX clock stopped, with cable option, but cable
not synchronized or missing
GREEN 1/sec flash POSIX clock running, without cable option
GREEN 1/sec blink POSIX clock running, with cable option, and cable
synchronized
RED/GREEN alter-
nating 2/sec flash POSIX clock running, with cable option, but cable
not synchronized or missing
BLUE 1/sec flash POSIX clock running, without cable option, and
receiving a valid GPS pulse
BLUE 1/sec blink POSIX clock running, with cable option, receiving
a valid GPS pulse, and cable synchronized
RED/BLUE alternat-
ing 2/sec flash POSIX clock running, with cable option, receiving
a valid GPS pulse, but cable not synchronized or
missing
I n p u t
S t a t u s
LED RED 2/sec flash with cable option, but cable not synchronized or
missing
GREEN solid with cable option, and cable synchronized
BLUE 1/sec flash without cable option, but receiving a valid IRIG
pulse
BLUE 1/sec blink with cable option, receiving a valid IRIG pulse, and
cable synchronized
RED/BLUE alternat-
ing 2/sec flash with cable option, receiving a valid IRIG pulse, but
cable not synchronized or missing