- Provides a 1 PPS (Pulse Per Second) output synchronized to the input time source (-
GPS, -IRIG versions only).
- Provides a 1, 5, or 10 MHz TTL output synchronized to the input time source (-GPS,
-IRIG versions only).
- Flywheels through loss of the timing signal to provide continuous NTP time service and
output time code.
- Optional rack mount ears. 1 3/4" high.
- Optional 8 time code output buffer (-TDM).
1.2 TYMSERVE 2000 OVERVIEW
The TYMSERVE 2000 is a self-contained primary time server which uses GPS (-GPS version
only), IRIG B time code, an internal free running clock, an external 1 PPS input, or (-ACTS
only) the NIST Automated Computer Time Service (ACTS) as its time source. Utilizing the NTP
protocol (version 2 RFC-1119 and version 3 RFC-1305) over an Ethernet, the user can maintain
time synchronization among all computers connected to the network. The NTP Server provides
the time server function which synchronizes other hosts on the network, and is never
synchronized by these other hosts. Utilizing NTP, synchronization of hosts to within 1
millisecond of the input time source is achievable under the best conditions. The -ACTS version
provides timing accuracies to within 10 ms of UTC, but will still synchronize hosts to within 1
ms of the TYMSERVE.
The -GPS and -IRIG versions of the NTP Server provide an IRIG B time code output
synchronized to the input time source. By using a time code reader module installed in the users
computer, time can be obtained (from the reader) to accuracies on the order of 20 μsec.
Bancomm offers time code reader modules for the IBM PC bus, VMEbus, Qbus, STD bus, and
SBX bus.
The principal performance characteristics are listed in Table 1-1.
Datum Inc, Bancomm Div. TYMSERVE 2000 Manual
ix
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