Wavetek ANT-20 Operating Manual page 61

ANT-20/ANT-20E
2.3.3 Measurement of AU pointer actions
Evaluation
The AU pointer is indicated as an absolute value. The direction and number of pointer
movements are detected.
NDF (new data flag) is detected and counted.
Display
• Number of AU pointer operations:
Increments, decrements, sum of increments + decrements,
difference of increments - decrements
• Pointer address
• Number of NDF events
• Corresponding clock deviation
• AU-NDF and NDF-P can be indicated by the LED display on the front panel
(Application Manager - "Configuration" menu - LED Display ...):
– the "AU-LOP/LOP-P" LED indicates "AU-NDF" in addition to "AU-LOP" and it indicates
Absolute pointer values, increments, decrements, sum of increments + decrements and NDF
are displayed as histograms with a selectable time resolution of seconds, minutes, hours or
days.
Printout
Absolute pointer values, increments, decrements, sum of increments + decrements and NDF
are printed out as a table with a resolution of 1 second.
Specifications OC-48c/STM-16c
"NDF-P" in addition to "LOP-P"
Concatenation Options
S-43