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18 997-01530-01, Rev. C-25, Jan 2008
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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: (“
F69 – Time Mode” on page 61) 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.