Symmetricom TimeHub 5500 User Manual

097-55501-01 Revision M – January 2009 TimeHub 5500 User’s Guide 185
Chapter 4 Testing and Configuring the TimeHub
Configuring CC Signals
5. Enable the specific port of interest by issuing the TL1 command:
ED-SYNC::S1-OUTC-25:SV275:::SQUELCH=N;
where S1- indicates Expansion shelf 1
OUTC-25 indicates port 25 in output group C
SV275 is the ctag
SQUELCH = N indicates the port is not turned off (Y turns off the port)
The system responds with:
SYMMBITS 04-10-11 10:52:27
M SV275 COMPLD
;
To check the setting for a specific output port, issue the TL1 command:
RTRV-SYNC::S1-OUTC-25:SV276:::PARAMETER=SQUELCH;
which produces the following response:
SYMMBITS 02-07-11 10:52:27
M SV276 COMPLD
"S1-OUTC-25::SQUELCH = N"
;
6. Set the cable compensation for Composite Clock outputs using the procedure in
Configuring CC Signals, on page 185.
Securing Cards in the Shelf
Using a Phillips-head or Pozidrive screwdriver, secure all the cards to the shelf by
tightening the captive screws at the top and bottom of the card front panels.
Configuring CC Signals
When configured as a Master shelf, the TimeHub 5500 has several capabilities
provided to facilitate operation of the shelf with a downstream Remote shelf. These
are the ability to phase-align the Master shelf CC outputs to a CC input, and the
ability to time-shift (advance or delay) the CC outputs from the Master shelf (which
can facilitate cable-delay compensation).
No compensation is required for cables between 0 and 1500 ft. (0 to 365 m).

Symmetricom TimeHub 5500 Specifications

General

Brand	Symmetricom
Model	TimeHub 5500
Category	Data Loggers
Language	English