Electrical noise interference is a major cause of trouble with electronic device such as damage, malfunctions and communications disruptions. Model 3145-20 is an on-site noise measurement instrument designed to measure the conducted noise that appears on power, earthing and telecom lines resulting from ingress of radiated noise. Using the 3145-20 can shorten the time required for noise investigation and development of countermeasures suppression.
By employing a non-contact noise sensor, investigation of noise affecting electronic devices can be performed simply, in the active state. The instrument simultaneously displays the noise levels in multiple contiguous frequency bands, and a peak detection function can be used to reliably capture one-shot noise surges such as from lightning, contact switching and ESD. By recording and displaying noise measurements as a time series, the timing and other characteristics of the noise can be seen at a glance.
Advanced Features
Lightweight and compact, for easy
on-site noise investigations
Until now, large and expensive measurement instruments were required
for noise analysis, making on-site noise investigations often
problematic. Model 3145-20 is a small, lightweight instrument
dedicated to noise measurement and especially suitable for on-site
noise investigations.
Non-contact noise sensor
The non-contact noise sensor eliminates the need to worry about
electric shock or communications disruption, even when measuring noise
on active power, telecom and earth lines.
Measurement frequency range
corresponds to most radiated electromagnetic noise
The 3145-20 measures noise over the broad range of 10 kHz to 100 MHz,
so it is able to measure a wide variety of noise.
Noise levels displayed on a large LCD
Detected noise is separated into seven contiguous bands, each of which
is displayed simultaneously in a bar graph, so you can see the nature
of the noise at a glance.
One-Shot noise detection
One-shot noise such as surges and ESD noise, which are hard to detect
with a spectrum analyzer or digital oscilloscope, are reliably
captured by the peak detection function.
Capable of measuring earth line noise
Because the HiLOGGER measures noise current, noise on earth lines that
had been difficult to measure can now be measured easily.
Records noise level fluctuations over
time
The HiLOGGER records and displays fluctuations of noise over time in
seven frequency bands, ideal for long-term noise monitoring and
investigating times of event occurrence. It can also monitor
unpredictable noise events. Noise fluctuations over time can be
displayed as a time-series graph on the instrument's LCD.
Alarm function
An alarm sounds when the noise level exceeds a specified threshold.
Alarm occurrence levels and times are automatically recorded, so the
dates and times of rare and unpredictable noise interference events
are revealed.
Network connection
A LAN terminal is included for connection to an intranet or to the
Internet. Remote control of the instrument and measurement monitoring
can be performed using a Web browser such as Internet Explorer. In
addition, alarm notifications can be sent by e-mail.
Bundled PC application program
Noise measurement data recorded on the 3145-20 can be viewed on a
personal computer. Additional program capabilities include a search
function for finding measurement data according to specified criteria,
time-series graph printing and CSV format conversion.
