Anritsu BTS Master MT8221B, Руководство пользователя

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EMF (Option 444) 8-3 LTE/TD-LTE EMF Menu
3GPP MG PN: 10580-00234 Rev. V 8-7
Measurement Results (LTE/TD-LTE)
The measurement starts by setting the antenna’s X axis and capturing over-the-air data. If a
sync signal is found and a valid Cell ID exists, then the following parameters are detected and
stored: the channel power in 1.4 MHz bandwidth, the Cell ID, RS, P-SS, and S-SS (all per
Resource Element). This is repeated for Y and Z axes. If any one of the axes has a valid Cell
ID, the isotropic result (for example,
(RS
2
X
+ RS
2
Y
+ RS
2
Z
)
0.5
) for each of the above
parameters is displayed as the Actual result.
The Measurement Parameters submenu (refer to page
8-3 ) lets you choose which computed
result is displayed in the measurements table, in each of the RS, P-SS, and S-SS columns. See
Figure 8-7 . The choices of display parameters are: Actual, Total Min, Total Max, Avg/Meas
(the default), and Total Avg.
Total Min, Total Max, and Total Avg are the min, max, and average values computed from all
measurements completed thus far within the measurement period (Measurement Time ×
Number of Measurements). Avg/Meas is the running average of the isotropic results
computed from all measurements completed thus far within the specified Measurement Time.
There is no axis dwell time parameter. If a sync signal is not found within a specific time,
data for the current axis is excluded and the instrument switches to the next axis. The Field
Strength number is still computed and compared with the specified limit to determine the
Pass or Fail status at the end of the measurement period (Measurement Time × Number of
Measurements).
Field Strength (Avg) is the running average for the current Measurement Time. Field
Strength (Total Avg) is the running average for all measurements completed thus far within
the measurement period.
Figure 8-7. LTE EMF Measurement Results