Document No. ZD24010 Rev. B2
NAC1 User Manual
17 of 38
3.5.3. Basic NAC1 GUI Features
The ‘Read Parameters’ button triggers the read of the NAC1 status and setup. The ‘Rx Reading’
indicator will be lit during the process of data acquiring.
The ‘Received Data’ window is basically used for the visual confirmation of the last issued command.
When the reading of parameters is completed, the updated data will be displayed on the GUI screen.
Note
: After power up, start-up scripts will operate for another 5 minutes from the moment the BIT is
valid (warm-up time). You cannot communicate with NAC1 until the start-up scripts will end.
‘
BIT
’ (Built-In Test) indicates the overall status of the NAC1 control loops and readiness to function.
See also ‘UMR’ command description (Appendix C: Software ICD (CLI)) and Section 4.2 for more
information
.
The ‘
SW Reset
’ button performs NAC1 Soft Reset, which is equivalent to a power cycle.
See also the ‘RST’ command description (Appendix C: Software ICD (CLI)).
The ‘
Disciplining
’ dialog allows controlling the disciplining process. The default setting is ‘Enable’.
Selecting ‘Disable’ will disable the disciplining, effectively switching NAC1 to Holdover state, regardless
to the 1PPS input status.
See the ‘SDM’ command description (Appendix C: Software ICD (CLI)) and Section 5 for more
information.
The ‘
Output Delay
’ dialog allows deferring the ‘1PPS Output’ phase by the specified number of nano-
seconds. This is a pure administrative function and doesn’t affect the disciplining algorithm.
See also the ‘SPD’ command description (Appendix C: Software ICD (CLI)) for more information.
The ‘
Ext. 1PPS Input Delay
’ dialog allows deferring the ‘1PPS Input’ phase by the specified number of
nano-seconds.
See also the ‘SED’ command description (Appendix C: Software ICD (CLI)) for more information.
The VER CLI instruction can be used to remotely identify the unit.
The instruction returns the unit part number (for example: NAC1), S/W and F/W versions, and the
unit’s serial number.
See also the ‘VER’ command description (Appendix C: Software ICD (CLI)) for more information.
