EXFO FTB-800 Series for FTB-1 User Manual
Page 108
Test Setup - Test Configurator, Timer, and System
98
FTB-700G/800 Series
1588 PTP
GM Info
Note: Only available when Grand Master clock information is available.
The Grand Master Information window displays the decoded clock
information.
Identity report the 8-byte identification code of the Grand Master
Clock.
Clock Class reports the description and code of the Grand Master
Clock Class.
Clock Mode reports the description of the Grand Master Clock
Mode: Two-step or One-step.
Code
Description
0-5, 8-12, 15-51, 53-57, 59-67, 123-132,
171-186, 188-192, 194-215, 233-247, 249-254
Reserved
6
Sync to primary reference
7, 14
Holdover
13
Sync to application-specific reference
52, 58, 187, 193
Degraded
68 to 79, 81-109 (odd values), 11-122,
133-170, 216-232
Alternate PTP profiles
80-110 (even values)
a
a.
Refer to QL table on page 319 for the list of Quality Level values that will be used as the description.
Quality Level (QL-xxx
a
)
248
Default
255
Slave only