XLi Time & Frequency System 197
XLi-man, Issue 8, 6/17/2008, Rev. H
2
5
1
SSSSSSSSSSSS SSSSSSSSSS SSSSSSS S SSS S SSSSS S
A transmit-only Display port on the FTM card can drive multiple remote displays. This RS-422 (optionally
RS-232C) serial port broadcasts Time Deviation, Frequency Deviation, System Frequency, Local Time,
and System Time to Symmetricom addressable displays capable of displaying 12 or more characters.
Configuration
The following is a list of features that can be configured by the user. “Keypad” indicates the parameter
can be set from the XLi's front panel keypad using F27. “Command Line” indicates the parameter may
be set from the XLi's serial or network port using F27.
FTM RS-422 Display Port
The display driver is an RS-422 port located on the FTM card rear panel. For the RS-232 option Pin 3 is
Transmit and Pin 5 is ground for the DB-9 connector. The RS-422 pinouts are as follows:
The port is a transmit only port. Transmitting characters to this port has no effect on port operation.
System Frequency, Frequency Deviation, Time Deviation, System Time, and Local Time data is
transmitted once-per-second, with a terminating <etx> character on time with the second
(±1 millisecond).
Each of the five data items is preceded by a three-digit address for use by Symmetricom addressable
displays. These addresses can be entered via keypad F27 under the “Display Port Data Address Setup”
selection.
Parameter: Selectable from:
Line Frequency Keypad
Time Deviation Preset Keypad, Command Line
Display port RS-422 setup Keypad
Display port Data Addresses Keypad
User Serial Port Data Format ----------, Command Line
DB-9P
PIN #
DATA
DIRECTION
DB-25P ADAPTER
SIGNAL
1OUT TxD-
2OUT TxD+
3 IN RxD+
4 IN RxD-
5-- GND
6OUT RTS-
7OUT RTS+
8IN CTS+
9IN CTS-
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
Need help?
General
