12
NEWS IN BRIEF
Anritsu extended 116-Gbit/s PAM4
error detector functions take world
lead in evaluations for 400-GbE and
800-GbE transmissions
Anritsu Corporation has released an FEC
symbol capture function and Bathtub test
capability for its 116-Gbit/s PAM4 Error
Detector (ED) MU196040B, offering more
functionality for developers of 400-GbE
and 800-GbE devices.
Installed in Anritsu’s flagship Signal
Quality Analyzer-R MP1900A series, these
functions can be downloaded from the
MP1900A website.
The spread of commercial next-generation 5G mobile communications services enables
faster sending and receiving of large video and data files. To support larger and faster
transmissions, data centers, which are key infrastructure in 5G mobile networks, are also
investigating speed upgrades from the current 100 GbE to 400 GbE and in future to 800
GbE/1.6 TbE standards.
PAM4 used in 400 GbE is easily affected by noise and transmission path losses, making
it difficult to achieve the previous level of error-free transmissions and requiring use of FEC
(Forward Error Correction) to correct generated errors and maintain transmission quality.
Consequently, there is an increasing need for quantitative measurement of jitter-related
signal quality, such as jitter tolerance measurement for evaluating the performance of highspeed
devices and transceivers for 400-GbE.
To meet this need and support 400G network evolution, Anritsu has added two new
features to its MP1900A - the FEC symbol capture function to evaluate FEC-based network
elements, and the PAM4 Bathtub*7 test capability.
In today’s high-speed networks, some low-probability errors are expected in data traffic;
errors that are corrected using FEC. The new MP1900A ED function determines if the errors
can be corrected by FEC and starts capturing data streams only when the burst errors exceed
the FEC uncorrectable threshold. From the captured data, a user can discover what kind of
data steam caused the uncorrectable burst errors.
Since the impact of jitter becomes severe as the data-stream baud rate is increased to
achieve a higher traffic capacity, Anritsu has added the PAM4 Bathtub test capability to
evaluate and quantify the jitter phase margin.
The modular MP1900A running embedded Windows 10 can easily be expanded. As well
as supporting 400-GbE and 800-GbE PAM4, it is a market-leading Bit Error Rate Tester (BERT)
for various high-speed interfaces, including PCI Express Gen5 and USB4, using a full line of
modules and application software. In addition to offering more accurate BER measurements,
the MP1900A helps shorten development times for high-speed devices and transceivers. n
Mayflex win ‘Distinguished Partner
Award’ from Edgecore Networks
Mayflex, distributor of converged IP Solutions, has been awarded the ‘Distinguished Partner
Award for 2019’ from Edgecore Networks.
Mayflex were one of a few worldwide partners that were recognised by Edgecore Networks
for their excellent performance, innovation and quality throughout 2019.
Neil Staley, Mayflex’s Market Manager said “I was delighted to accept this award on
behalf of Mayflex. Edgecore provides an excellent range of wired and wireless networking
products and it’s a brand that is growing in popularity with our customers due to the build
quality of the products and the reliable performance.”
Neil continued “We’ve particularly seen an increase of Edgecore switches being used for
IP security installations, customers like the fact that Edgecore Networks is a wholly owned
subsidiary of Accton Technology Corporation who manufacture products for some of the
world’s largest networking brands, so they have the added confidence of a great product at
a more competitive price.” n
Compact panel
mounted voltage
measurement with
LEM DVC 1000 series
LEM has introduced the DVC 1000 series of voltage sensors
for insulated nominal voltage measurements in rail traction
and industrial applications.
The DVC 1000 series offers panel mounted voltage
measurement in a compact package.
Designed to measure a nominal voltage of 1000 VRMS,
the DVC 1000 series uses an isolating amplifier, providing
high levels of isolation with a safety insulation voltage of 4.2
kV. The use of an isolating amplifier offers significant space
savings over other sensors of similar capacity, which use
bulky galvanic insulation.
As well as being highly robust, the DVC 1000 series also
offers high levels of accuracy and temperature stability.
An optional DIN rail mounting adaptor makes it easy to
integrate into users’ own applications.
LEM developed the DVC 1000 to be fully compliant
with the International Railway Industry Standards (IRIS).
Engineers in the railway industry working with both rolling
stock and sub-stations can use these versatile new sensors to
measure DC links, the output voltages of inverters, the input
voltage of 4 quadrant converters, or the battery voltage of
Light Rail Vehicles.
The features of the DVC 1000 voltage sensors also
make them ideal for a broad range of small-to-medium
voltage measurements in industrial markets such as
DC power supply monitoring, EV chargers and battery
storage applications.
DVC 1000 sensors measure voltages by a direct
connection on their primary sides, through an internal
resistor network and other components designed to feed the
signal to an isolation amplifier.
An isolated signal is recovered and then conditioned in
order to supply a voltage or a current at the sensor’s output
connections, which is an exact representation of the primary
voltage. No additional components are needed – the
connections are simply connected between the voltage to be
measured and the control device.
With their compact size and weighing only 57g, the DVC
1000 series is unique on the market. Other key features
include compliance to a range of internationally recognised
safety standards in addition to their adherence to IRIS
specifications. They also exhibit a fast response time of 12
to 17 µs at 90% of nominal voltage. n
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