Returns the traceability of the time or frequency distributed by the 802.1AS clock used by the time reference specified by activeItem.
Integer | Clock Class Specification |
0 | Reserved to enable compatibility with future versions. |
1&em;5 | Reserved |
6 | The clock is synchronized to a primary time reference. The distributed timescale is PTP. A clock in this class cannot be a slave to another clock in the domain. |
7 | The clock has previously been designated as Clock Class 6, but has lost the ability to synchronize to a primary time reference. A clock in this class is in holdover mode and operates within holdover specifications. The distributed timescale is PTP. A clock in this class cannot be a slave to another clock in the domain. |
8 | Reserved |
9&em;10 | Reserved to enable compatibility with future versions. |
11&em;12 | Reserved |
13 | The clock is synchronized to an application-specific time source. The distributed timescale is ARB. A clock in this class cannot be a slave to another clock in the domain. |
14 | The clock has previously been designated as Clock Class 13, but has lost the ability to synchronize to an application-specific time source. A clock in this class is in holdover mode and operates within holdover specifications. The distributed timescale is ARB. A clock in this class cannot be a slave to another clock in the domain. |
15&em;51 | Reserved |
52 | The clock is degradation alternative A for a Clock Class 7 clock that is not within holdover specification. A clock in this class cannot be a slave to another clock in the domain. |
53&em;57 | Reserved |
58 | The clock is degredation alternative A for a Clock Class 14 clock that is not within holdover specification. A clock in this class cannot be a slave to another clock in the domain. |
59&em;67 | Reserved |
68&em;122 | The clock uses an alternate PTP profile. |
123&em;127 | Reserved |
128&em;132 | Reserved |
133&em;170 | The clock uses an alternate PTP profile. |
171&em;186 | Reserved |
187 | The clock is degredation alternative B for a Clock Class 7 clock that is not within holdover specification. A clock in this class can be a slave to another clock in the domain. |
188&em;192 | Reserved |
193 | The clock is degredation alternative B for a Clock Class 14 clock that is not within holdover specification. A clock of this class can be a slave to another clock in the domain. |
194&em;215 | Reserved |
216&em;232 | The clock uses an alternate PTP profile. |
233&em;247 | Reserved |
248 | The default Clock Class. This class is used if none of the other class definitions apply. |
249&em;250 | Reserved |
251 | Reserved for version 1 compatibility. |
252&em;254 | Reserved |
255 | The clock is a slave-only clock. |