Symmetricom TimeSource 3100, Руководство пользователя

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TimeSource 3100
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Description
097-72020-01 Issue 9: November 2003
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S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S
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E1 or Analog Outputs
The BesTime Ensemble Timing Generator provides the timing for the E1 or analog
(2.048 MHz) timing signal available at the E1 OUT A and B connectors. E1 is provided in a
framed, all-ones format, which can be set to CAS, CAS4, CCS, or CCS4 framing.
2.048 MHz is provided in accordance with G.703/10.
Eight Mixed E1/T1 Outputs (990-72020-06 Systems Only)
This option enables a user to mix any combination of E1 and T1 outputs. A user can also use
any combination of framing. For El, CCS, CAS, CCS with CRC4, and CAS with CRC4 can
be used per G.703 table 6. For T1, D4 or ESF can be used per ANSI T1.101. In addition,
there is support for analog (2.048 MHz) per G.703 table 10 and support for synchronization
status messaging (SSM) per TR-33 for El and T1. The module mounts in the OPTIONS I/O
mountings on the connector panel.
Eight Additional E1 Outputs (990-72020-02 Systems Only)
This option provides a module for eight additional E l or analog (2.048 MHz) outputs. The
module mounts in the OPTIONS I/O mountings on the connector panel. These outputs
function the same as the standard E l outputs.
TOD Output
The BesTime Ensemble Timing Generator provides the timing for the TOD timing signal
available at the RJ-45 connector, which provides time code to devices compatible with NTP
Type 4 or Cisco format.
IRIG-B TOD Outputs (990-72020-05 Systems Only)
This option provides a module for four additional TOD outputs in IRIG-B format. The
module mounts in the OPTIONS I/O mountings on the connector panel. The BesTime
Ensemble Timing Generator provides the timing for the TOD timing signal, which provides
timing code to devices compatible with IRIG-B.
1 PPS Output
The BesTime Ensemble Timing Generator provides the timing for the 1 pulse-per-second
timing signal available at the 1 PPS connector, which can be used for application-specific
requirements.