Using the command line interface, Connecting to the serial port, Enter–4–enter – Symmetricom XL-GPS User Manual
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997-01530-01, Rev. C-25, Jan 2008
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1
the Eastern Time Zone portion of the State of Indiana, and most of Arizona (Navajo Indian
Reservation in observes DST).
-
Throughout the European Union (EU), Summer Time begins and ends at 1 am UTC. It starts
the last Sunday in March, and ends the last Sunday in October. In the EU, all time zones
change at the same moment.
•
F69 – Time Mode
: (
) Select the type of time output on the front
panel display, F8, F9, and F90. The four choices are as follows:
-
UTC
(Universal Coordinated Time) differs from GPS Time by the addition of leap-second cor-
rections to compensate for variations in the earth’s rotation.
-
GPS
time is derived directly from the GPS constellation and doesn’t contain any leap-second
adjustments or other GPS-to-UTC corrections.
-
Standard Time
is UTC plus a time zone offset. For example, Pacific Standard Time is UTC
minus 8 hours.
-
Local Time
is UTC with a time zone adjustment and a daylight saving time adjustment.
Using the Command Line Interface
The next two sections show how to connect to the XL-GPS using the serial and network ports. Both
Serial I/O and the network port give the user access to the command line interface. While the keypad
interface provides a simple menu-driven user interface, the command line interface features:
•
Additional functions that aren’t available through the keypad
•
Remote accessibility over a network through the standard network port
To use the command line interface, refer to the explanations and examples in the ‘Command Line’
subsections for each function in the XL-GPS User’s Guide and Reference Manual.
Connecting to the Serial Port
Complete the following steps to set up and use the Serial Port to communicate with the XL-GPS.
Verify that the XL-GPS’s serial port settings are as follows: (Keypad:
ENTER–4–ENTER
.
Use the UP/
DOWN ARROWs.)
•
Serial Port – RS232
•
Baud rate – 9600
•
Data bits – 8
•
Parity – NONE
•
Stop bits – 1
Note:
Parity set to NONE is only valid when Data Bits is set to 8.