VIAVI Timing Expansion Module V2 (TEM V2) for T-BERD/MTS-5800 and OneAdvisor 800

Field timing and synchronization module with multi-band GNSS receiver and rubidium oscillator for T-BERD/MTS-5800 and OneAdvisor 800.

Weight: 0.45 kg (1.0 lb)
Dimensions: 12.9 x 13.5 x 4.7 cm; (5.9 x 5.4 x 1.8 in)
Time error: <= 176 ns over 8 hours
Average frequency stability: <= 6E-12 over an 8-hour period

Datasheet

Overview

The VIAVI Timing Expansion Module Version 2 (TEM V2) is a field timing and synchronization reference. It is used with the T-BERD/MTS-5800 or OneAdvisor 800 test platforms. With it, network operators can verify the precise synchronization that Radio Access Networks need as ITU-T timing accuracy targets become stricter.

The module has a multi-band GNSS antenna input and a rubidium-based miniature atomic clock (MAC). This keeps measurements accurate to the nanosecond when no satellite signal is present and the module is running in holdover.

The TEM V2 attaches to the host test set, so technicians do not need to carry a second instrument for synchronization testing. It supports IEEE 1588v2 (PTP) time error and packet delay variation measurements, Ethernet and IP one-way delay, GNSS antenna qualification, 1 PPS wander analysis, and T1/E1 jitter and wander measurements.

Key Features

Multi-channel, multi-band GNSS receiver for fast and accurate satellite acquisition
Confirms frequency, phase, and time synchronization in the field using ITU G.8265.1, G.8275.1 and G.8275.2 profiles
Verifies Ethernet and IP one-way delay
Nanosecond-accurate one-way delay 1/10 GE measurements
Proves out GNSS antenna installations, including individual satellite signal strength and overall Dilution of Precision
Concurrent multiple GNSS constellations including GPS, GLONASS, Galileo, BeiDou, and SBAS
Supports multiple 1 PPS and 10 MHz inputs and disciplined outputs concurrently
BITS/SETS clock inputs
Standard RJ-45 V.11 interface per G.703 Amendment 1 supporting 1 PPS and Time of Day inputs
1588v2 (PTP) measurements including nanosecond-accurate PDV and time measurements
PTP grand master (PRTC) emulation
Wander analysis per ITU G.8262.1, G.8273.1, and G.8273.2
GNSS 1PPS pulse accuracy to +/-5 ns (1-sigma)
Rubidium oscillator for holdover operation

Specifications

General

Weight	0.45 kg (1.0 lb)
Dimensions	12.9 x 13.5 x 4.7 cm; (5.9 x 5.4 x 1.8 in)
Time error	<= 176 ns over 8 hours At room temperature with no vibration (in Holdover)
Average frequency stability	<= 6E-12 over an 8-hour period In Holdover; stability is based on a constant room temperature and stable magnetic environment with no vibration
Inputs	Two (2)
Output	One (1) — disciplined
Time accuracy compared to UTC	± 5ns 1-sigma

Interfaces – GNSS Antenna

Connector	SMA
Power	0, 3.3, and 5V

Interfaces – 1 PPS RJ-45

Connector	RJ-45
Input	1 PPS and Time of Day (ToD) over V.11 serial interface per G.703
Output	1 PPS per G.703 with adjustable voltages

Interfaces – 1 PPS

Connector	SMB
Inputs	Two (2)
Output	One (1) — disciplined

Interfaces – External Clock

Connector	SMB
Input	BITS/SETS, 2 MHz, 10 MHz

Interfaces – 10 MHz Output

Connector	SMB
Input	One (1)
Output	One (1) — disciplined

GNSS

Constellations	GPS, GLONASS, Galileo, BeiDou, and SBAS; sky plot Web page lists GPS, GLONASS, BeiDou, SBAS, and QZSS; datasheet value shown
Channels	184 channels with per channel signal strength
Time formats	UTC, GPS, Galileo, BeiDou, Glonass
Location information	Fixed (configurable), dynamic, survey