Atec Anritsu-MT8221B - Manual (Page 7)

7
BTS Master™ Base Station Analyzer Features
Interference Analyzer (Opton 0025) Channel Scanner (Option 0027)
Interference Analyzer Measurements
Spectrogram
Signal Strength Meter
Received Signal Strength Indicator (RSSI)
Signal ID (up to 12 signals)
FM
GSM/GPRS/EDGE
W-CDMA/HSDPA
CDMA/EV-DO
Wi-Fi
Spectrum
Field Strength – in dBm/m 2 or dBmV/m
Occupied Bandwidth - 1% to 99% of power
Channel Power - in specified bandwidth
ACPR - adjacent channel power ratio
AM/FM/SSB Demodulation - audio out only
C/I - carrier-to-interference ratio
SEM - spectral emission mask
Channel Scanner
Scan
20 channels at once, by frequency or channel
Noncontiguous channels
Different channel bandwidths in one scan
Display
Current plus Max hold display
Graph View
Table View
Script Master™
Up to 1200 Channels
Auto-repeat sets of 20 channels and total
Auto-Save with GPS tagging
Interference Analyzer (Option 0025)
Channel Scanner (Option 0027)
Interference is a continuously growing
problem for wireless network operators.
Compounding the problem are the many
sources that can generate interference
such as:
• Intentional Radiators
• Unintentional Radiators
• Self Interference
Interference causes Carrier-to-Interference
degradation robbing the network of
capacity. In many instances interference
can cause an outage to a sector, a cell,
and/or neighboring cells. The goal of these
measurements is to resolve interference
issues as quickly as possible.
Monitoring Interference
The BTS Master offers many tools for
monitoring intermittent interferers over
time to determine patterns:
• Spectrogram
• Received Signal Strength Indicator
• Remote Monitoring over the Internet
• Save-on-Event – crossing a limit line
Master Software Tools for your PC features
diagnostic tools for efficient analysis of
the data collected during interference
monitoring. These features include:
• Folder Spectrogram – creates a
composite file of multiple traces for
quick review
• Movie playback – playback data in
the familiar frequency domain view
• Histogram – filter data and search
for number of occurrences and time
of day
• 3D Spectrogram – for in-depth
analysis with 3-axis rotation viewing
control
Identifying Interference
The BTS Master provides several tools
to identify the interference – either from
a neighboring wireless operator, illegal
repeater or jammer, or self-interference:
• Signal ID (up to 12 signals at once)
• Signal Analyzer Over-the-Air
Scanners
• Channel Scanner (up to 1200
channels, 20 at a time)
Locating Interference
Once interference has been identified the
Signal Strength Meter with its audible
output beep coupled with a directional
antenna makes finding the interference
easier.
Spectrogram
For identifying intermittent interference and tracking
signal levels over time for up to 1 week with an
external USB flash drive.
Received Signal Strength Indicator (RSSI)
Used to observe the signal strength of a single
frequency over time. Data can be collected for up to
one week with an external USB flash drive.
Channel Scanner
Works on any signal and is useful when looking for IM
or harmonics. Can help spot signals widely separated
in frequency that turn on and off together.
Signal Strength Meter
Can locate an interfering signal, by using a directional
antenna and measuring the signal strength and by an
audible beep proportional to its strength.