Mobatime DTS 4138.timeserver, Монтаж и инструкция по эксплуатации

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8.2 Time acceptance
Variants of time synchronization

Adjusting:
After starting the DTS 4138, the time is set for a first time (from source or manually).
Afterwards, the time will only be aligned with maximum adjusting speed if deviating
from the source.
Configuration: see chapter “6.5.9 Time adjustment / Time-keeping“

Setting:
Time deviations are always corrected in full immediately: Seconds are set
immediately; partial seconds are corrected with 50ms/s.
Manual time set:

The time is always set immediately. The stratum is set to 1 or pre-set to a fix
stratum. If new source time information is available, the time will be adjusted again
and the stratum set accordingly.
8.3 Time acceptance from an external source (DCF or GPS)
Acceptance from an external source (DCF input):

At least 2 minutes reception (DCF-GPS) is required, before the NTP server is
available.
Time source stratum = 0
 stratum of the DTS 4138 = 1
Stratum normal, synchronized operation:

The stratum value behaves as follows for synchronization from the time source:
If St_fix > 0: then stratum = St_fix (particularly for manually set time) applies
If St_fix = 0: then stratum = 1
Stratum in case of error:

The stratum value behaves as follows in the case of external time source loss:
If St_fix > 0: then stratum = St_fix applies
If St_fix = 0:
then stratum = MIN((t_current - t_lastsynch)/(To * 255), St_max) applies

Adjusting the clock after identifying a leap in time:
If St_fix > 0: then stratum = St_fix applies
If Tst > 0 AND St_fix = 0: then stratum = MIN(Tdiff/Tst, St_max) applies
If Tst = 0 AND St_fix = 0: then stratum = 1 (auto) applies
Legend:
To:
Stratum TO <0-16>, Stratum error timeout time 1-999 [h], for loss
of the external source
St_fix: 0..15, configurable stratum, 0 = auto
St_max: 1..16, configurable stratum, 0 = auto
t_current [s]: current time
t_lastsynch [s]: time of the last synchronization
Tst: Offset per stratum, 0..40'000 [ms], parameter time deviation for
stratum alteration by 1
Tdiff: current time difference in ms