5
MANUAL P/N 900000111 REV K
4.5.1.2
Have Quick & 1PPS Reference .............................................................................. 33
4.5.1.3
External 1PPS Only Reference .............................................................................. 33
4.5.1.4
Free-Run Reference ............................................................................................... 33
4.5.2
10 MHz Output Level Settings ...................................................................................... 34
4.5.3
Output Timing Setting .................................................................................................... 35
4.5.3.1
Setting 1PPS Pulse width ....................................................................................... 35
4.5.3.2
Setting 1PPS Pulse delay ...................................................................................... 36
4.6
Help ....................................................................................................................................... 37
4.7
Firmware Upgrade ................................................................................................................ 37
4.8
FPGA Upgrade ...................................................................................................................... 38
4.9
Webpage Upgrade ................................................................................................................ 40
5
Drawings ....................................................................................................................................... 45
6
Link Settings ................................................................................................................................. 48
7
Appendix A – Serial Output for firmware version ### ................................................................... 50
8
Appendix B – MIB File .................................................................................................................. 52
Table of Figures
Figure 1 Typical NFS-220 NTP Server Network Connection .............................................................. 16
Figure 2 NFS-220 console port start-up string .................................................................................... 17
Figure 3 Browser settings for NFS-220 ............................................................................................... 17
Figure 5: Setup ................................................................................................................................... 20
Figure 6 Download MIB file ................................................................................................................. 21
Figure 7 NFS-220 MIB (sample) ......................................................................................................... 22
Figure 8: Status ................................................................................................................................... 23
Figure 9: Time ..................................................................................................................................... 25
Figure 10 Standard IRIG Formats ....................................................................................................... 29
Figure 11: Password ........................................................................................................................... 30
Figure 12 Reference Tab .................................................................................................................... 31
Figure 13 Selecting the NFS-220 reference ....................................................................................... 32
Figure 14 GPS Fixed/Mobile Selection ............................................................................................... 32
Figure 15 Manual Setting of Time in NFS-220 .................................................................................... 33
Figure 16 Manual Setting of Time in NFS-220 .................................................................................... 34
Figure 17 Setting NFS-220 10 MHz output level ................................................................................ 35
Figure 18 Output Timing Settings ....................................................................................................... 35
Figure 19 - Serial Time, Position and Velocity output. ........................................................................ 47
