Chapter 1
Overview
About the TEM Module
T-BERD/MTS 5800 Timing Expansion Module User Manual
Page 2
22112315, Rev. 004
July 2017
About the TEM Module
The TEM Module provides a stable, highly accurate timing reference for the T-BERD /
MTS 5800v2, and the ability to conduct synchronized timing tests across multiple
instruments with the support of a Global Navigation Satellite System (GNSS) and an
internal rubidium oscillator. This equips technicians and engineers to perform highly
accurate one-way delay testing; timing and synchronization experts to measure time
and phase on systems, particularly wireless systems that require precise synchroniza-
tion; and certification labs to verify timing and synchronization of new equipment and
network configurations. The TEM Module can also be used to provide a stable external
timing reference via the 1PPS and 10MHz output connectors on the module.
Finally, the TEM Module also provides field construction teams with the ability to qualify
GNSS antenna installations by verifying the strength of signals received from specific
satellites and detecting obstructions to the antennas.
Features and capabilities
Features and capabilities of the TEM Module include the following (assuming your
5800v2 instrument is optioned and configured to do so):
•
Rubidium Oscillator. The TEM Module is equipped with its own, dedicated
rubidium oscillator which tunes to the frequency of a specified synchronization
source (for example, a GNSS satellite, or an external 1PPS or 10MHz reference
clock). After tuning, the oscillator on the TEM Module can be used as the timing
source when performing measurements that require highly accurate timing, or to
provide an external timing reference to another device.
•
Holdover mode. After the TEM Module’s oscillator warms up and is tuned to the
frequency of the synchronization source, it can be placed into holdover mode,
allowing the TEM Module to use its own rubidium oscillator as a stable timing
reference for a period of time while using the connected instrument to perform
tests. After the oscillator is placed into holdover mode, the signal from which
synchronization was obtained can be disconnected.
•
GNSS antenna. A GNSS antenna ships with the TEM Module. When connected
to the TEM module, provides the highest accuracy and stability using the
module’s high precision GNSS timing receiver.
•
GNSS high precision timing receiver. The TEM Module provides a GNSS high
precision timing receiver, which supports all GNSS frequencies when a GNSS
antenna is connected.
•
Supported GNSS Systems. The TEM Module supports GNSS systems for satel-
lite constellations that are available worldwide (GPS and GLOSNASS), and in
specific areas of the world (for example, BeiDou). If they are available, satellites
supporting different GNSS systems can be selected as sources of timing informa-
tion.
•
GNSS surveys. You can configure the TEM Module to survey GNSS constella-
tions, obtain position measurements from satellites within the constellation, and
then and then generate accurate coordinates based on the average position
measurement.
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