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Handheld Users Group

Handheld Users Group

Delivering leading solutions for today's field and maintenance challenges

Interference hunter


With over 20 years leading the way in handheld testing Anritsu has a well earned reputation for superior measurements in not so superior conditions. learn more about the very latest handheld testing technology.

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Questions and Answers

Question: What type of remote control tools does Anritsu have for its handheld analyzers?

Answer: Wireless Remote Tools™ has been developed for the touchscreen models in the PIM Master™, Site Master™, Spectrum Masterand VNA Master™ series. It is free of charge and allows measurements such as sweeps, spectrum analysis, PIM, and S-parameters to be made from the ground.

Question: Does Anritsu have an instrument to measure broadcast signals to ensure they comply with Part 73 of the FCC rules?

Answer: Indeed we do. The MS2720T Spectrum Master with option 709 (frequency coverage from 9 kHz to 9 GHz) is self-certified by Anritsu to comply with the NRSE requirements for conducting AM and FM broadcast measurements. The certification verifies that the MS2720T is capable of conducting AM and FM broadcast-proofing measurements. In fact, it is the only handheld spectrum analyzer with the necessary phase noise and dynamic range to conduct highly accurate broadcast-proofing measurements.

Question: Are there special features on PIM Master to reduce the time I spend on rooftops trying the find PIM sources?

Answer: The new overlay trace can be used with the Distance-to-PIM (DTP) technology to make it easier and faster to locate PIM sources when measuring rooftop antennas. Your current measurement serves as an active trace on the PIM Master display. The overlay trace (a previous measurement stored into memory) is placed over the active trace. This process is particularly useful for identifying the location of an unknown PIM source relative to a known “PIM marker” such as steel wool.

 

Test Tip

Omnidirectional or omni antennas are convenient for making over-the-air (OTA) measurements on LTE networks. Modulation quality specifications for LTE transmitters are 8% EVM or less at 64 QAM. This limit should be used when making a direct connect measurement, with the addition of a small factor for instrument contribution. For OTA measurements, a larger factor should be added to consider the signal path. As a general rule, readings under 10% are acceptable. Many modern transmitter designs, however, are much better than this; OTA readings from an ideal location can also be much better than this. A good approach is to take an OTA measurement when the base station is commissioned to establish a benchmark to maintain going forward.
 
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