EMF Option 0444, when mated together with an Anritsu handheld spectrum analyzer (MS2711E/12E/13E, MS2720T or MT8212E/13E) and an Anritsu isotropic antenna, provides a complete solution for EMF measurements. Option 0444 allows you to verify compliance with both national and international specifications relating to radiation safety. Each isotropic antenna provided with this system is individually characterized to insure measurement accuracy. Firmware version 1.56 or later is required for the MS2711E/12E/13E and MT8212E/13E. For the MS2720T, firmware version 1.12 or later is required.
The EMF option is highly automated, allowing the user to configure tests quickly and efficiently. Most features needed for test setup are available from two selection menus. Additionally, the display provides continual updates during test with pass/fail criteria set by the user. When GPS Option 31 is purchased, the EMF system also provides location awareness capabilities for the measurements. Saved test data can be stamped as a function of location.
Additional features provided by Option 0444 include the provision of limit line capability. Users can set multiple thresholds over a wide frequency range to trigger alarms for high radiation events. These limit lines can be saved and recalled at a later time for reuse. Automatic save features allow for easy storage of measurement results to memory. All data saved is preserved in spreadsheet format for easy post-processing and report formatting. Other configuration options include measurement test time and axis dwell time (time each axis X, Y and Z measures radiation before switching to the next axis).
EMF Measurements on Demodulated Signals
The EMF measurement system can be used to make radiation power measurements in Spectrum Analyzer mode. These are power measurements for either narrowband or wideband field strength measurements across the frequency range of the Spectrum Analyzer and isotropic antenna used. Additionally, EMF testing can be conducted on demodulated signals for various cellular standards. These include the LTE, TD-LTE and W-CDMA standards.
To measure demodulated W-CDMA signals, Option 0035 is required for the MS2712E/13E and MT8212E/13E platforms. For MS2720T, Option 0081 is required for W-CDMA. Option 0009 is also required for the MS2712E/13E and MS2720T platforms for W-CDMA demodulation capability. The field strength of the pilot channel (P-CPICH) is measured for all such signals present. Results are then displayed for each individual scrambling code as well as for total power levels for all measurements combined. Additionally, the analog signal strength across the channel is measured and displayed for comparison. In order to present a “worst case” result, extrapolation factors can be automatically calculated and displayed where a fully loaded traffic channel is assumed.
For LTE and TD-LTE, Options 0546 and 0556 respectively are required for the MS2712E/13E and MT8212E/13E platforms. Option 0083 is required for either LTE or TD-LTE on the MS2720T platform. Option 0009 is also required for the MS2712E/13E and MS2720T platforms for LTE or TD-LTE demodulation capability. Primary Synchronization Signals (P-SS), Secondary Synchronization Signals (S-SS) and Reference Signals (RS) are measured and displayed based on each Cell ID received. The total radiation field resulting from all cell site signals combined is calculated and displayed. The analog signal strength across the channel is measured and displayed for comparison. In order to present a “worst case” result, extrapolation factors can be automatically calculated and displayed where a fully loaded traffic channel is assumed.