Atec Anritsu-MT8221B - Manual (Page 4)

4
Cable and Antenna Analyzer
PIM Analyzer
The BTS Master features 1-port and
2-port Cable and Antenna Analyzer and a
PIM Analyzer to be able to test and verify
the performance of nearly every feed-line
and antenna component. This includes:
• Connectors
• Cables/Jumpers
• Antenna Isolation
• Diplexers/Duplexers
• Tower Mounted Amplifiers
The goal of these measurements is to
maximize the coverage, data rate and
capacity with problem-free antenna systems
minimizing dropped calls and blocked calls
for a good customer experience.
Antenna Systems Failure Mechanisms
Maintenance is an on-going requirement as
antenna systems’ performance can degrade
at any point in time due to:
• Loose connectors
• Improperly weatherized connectors
• Pinched cables
• Poor grounding
• Corroded connectors
• Lightning strikes
• Strong winds misaligning antennas
• Rain getting into cables
• Bullet holes/nails in the cable
• Intermodulation of multiple signals
Making Measurements Easier
The BTS Master provides features for
making measurements easier to perform
and to analyze test results such as:
• FlexCal™ eliminates the need to
recalibrate when changing frequencies
• High RF Immunity for testing in
harsh RF environments
• Trace Overlay compares reference
traces to see changes over time
• Limit Lines and Alarming for
providing reference standards
• High Power output to test tower-top
components without climbing the tower
• Internal Bias-Tee to power up TMAs
for testing when off-line
• GPS tagging of data to verify location
of tests
• Line Sweep Tools for post-analysis
and report generation
PIM Analyzer
The PIM Analyzer measures the 3
rd , 5 th , or 7 th
order intermodulation products in the receive
band of two high power tones generated by
the 40 Watt PIM Master. To learn more about
PIM and finding the location of PIM with the
Distance-to-PIM™ option see the PIM Master™
product brochure 11410-00546.
BTS Master™ Base Station Analyzer Features
Cable and Antenna Analyzer PIM Analyzer
Cable and Antenna Analyzer Measurements
VSWR
Return Loss
Cable Loss
Distance-to-Fault (DTF) Return Loss
Distance-to-Fault (DTF) VSWR
1-port Phase
2-port Phase
2-port Gain
Smith Chart
PIM Analyzer Measurements
(Requires PIM Master™)
PIM
Noise Floor
Distance-to-PIM™ (DTP)
(see PIM Master Product Brochure 11410-00546)
Return Loss/VSWR Measurement
Poor Return Loss/VSWR can damage transmitters,
reduce the coverage area, increase dropped and
blocked calls, and lower data rates.
Cable Loss Measurement
This an important commissioning check. Excessive loss
reduces the coverage area and can mask return loss
issues, creating false good readings later.
Distance-to- Fault (DTF) Measurement
DTF can be used to identify and locate faulty cable
components or connector pairs with poor Return Loss/
VSWR in meters or feet.
2-port Gain Measurement
Poor antenna isolation on base stations and repeaters
and degraded tower mounted amplifiers can cause
dropped and blocked calls.
Distance-to-PIM Measurement