Chapter 1 Overview of the TimeSource 3100
Functional Description
24 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005
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.
10 MHz Output
The BesTime Ensemble Timing Generator provides timing for the 10 MHz timing
signal available at the 10 MHz connector, which can be used for local cellular
frequency or testing purposes.
Two ESCIU Ports (990-72020-04 Systems Only)
This option provides a module for two E1 ports. The module mounts in the
OPTIONS I/O mountings on the connector panel. E1 traffic-carrying signals are
synchronized using the BesTime Ensemble Timing Generator. Jitter and wander
are also removed before sending the E1 signals to network elements.
If an alarm condition or power failure occurs, relays allow the E1 signals to bypass
the system (see Figure 1-4).