Summary of Options
GPS.
Note: This module is not RoHS.
For more information See "Multicode Output (87-6002-XL1)" on page 157
1,5,10 MHZ SINE AND MPPS (87-8108)
The 1, 5, 10 MHz / MPPS output provides four outputs. These outputs are phased locked
to the host receiver’s disciplined reference oscillator. They are automatically enabled upon
power-up and are independently selectable by the user via jumpers on the board.
For more information See "1, 5, 10 MHz Sine/MPPS Square Output (87-8108)" on page
161
10MHZ Sine Output Low Phase Noise
This option provides four Low Noise 10MHz frequency output signals. The option is only
available with the optional OCXO and is internally cabled to the oscillator installed in the
XL-GPS.
For more information See "10 MHz Sine Output LPN Option Card (87-8114)" on page
160
OCXO Oscillator – Option 87-399-30
For more informationSee "Oscillators" on page 18
Network Time Protocol (Option)
The XL-GPS' can function as a Network Time Protocol (NTP) server when the Network
Time Server (NTS) option is installed. With the NTS option, the XL-GPS Network Time
Server processes NTP requests from networked clients and synchronizes to UTC as
provided by the XL-GPS reference clock.
Support for version 3/4 of the Network Time Protocol, (RFC 1305) as well as the Simple
Network Time Protocol (SNTP), RFC1361 is available. In addition, the NTS will respond to
TIME protocol requests, RFC868.
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