11 UMTS Mode
136
SRM-3006
Narda
11.1
About UMTS mode
With GSM, individual channels can simply be measured frequency-
selectively and allocated to a particular radio cell. This is not possible for
UMTS because the information for the individual channels here is
scrambled and spread over an entire frequency channel of 5 MHz. This
procedure is also called W-CDMA (Wideband Code Division Multiple
Access). A P-CPICH (Primary Common Pilot Channel) is embedded in the
multiplex signal for each radio cell. This channel transmits continuously at a
constant level. Every radio cell has its own P-CPICH with its own scrambling
code.
In
UMTS P-CPICH Demodulation
mode (or
UMTS
mode for short), the
SRM-3006 decodes all the scrambling codes that are present in a selected
UMTS frequency channel. In this way, it can record and list separately the
contributions made by each of the individual radio cells to the overall field
exposure level. It also calculates the total of these contributions. It is then
possible to use a selectable extrapolation factor to determine the
worst case
situation that would occur if all traffic channels were fully loaded. The
SRM-3006 additionally indicates the analog measurement value. This
corresponds to the actual field exposure level integrated over the complete
UMTS frequency channel of 5 MHz.
Note:
The SRM-3006 also records even those UMTS channels that have
levels up to 15 dB below the highest measured channel level.
Summary of Contents for SRM-3006
Page 1: ...SRM 3006 Selective Radiation Meter Operating Manual ...
Page 12: ...Contents X SRM 3006 Narda ...
Page 15: ...1 Introduction Narda SRM 3006 3 Figure 1 SRM 3006 in on site use ...
Page 24: ...1 Introduction 12 SRM 3006 Narda ...
Page 50: ...3 Connecting Up and Starting to Use the Device 38 SRM 3006 Narda ...
Page 64: ...4 Operation and Basic Settings 52 SRM 3006 Narda ...
Page 128: ...8 Spectrum Analysis Mode 116 SRM 3006 Narda ...
Page 146: ...10 Scope Mode 134 SRM 3006 Narda ...
Page 168: ...12 Spatial Averaging 156 SRM 3006 Narda ...
Page 178: ...13 Measurement Data Memory 166 SRM 3006 Narda ...
Page 182: ...14 Maintenance and Repairs 170 SRM 3006 Narda ...
Page 186: ...15 PC Software 174 SRM 3006 Narda ...
Page 192: ...16 Remote Control 180 SRM 3006 Narda ...
Page 217: ...17 Specifications Narda SRM 3006 205 17 8 Declaration of Conformity ...
Page 218: ...17 Specifications 206 SRM 3006 Narda ...
Page 224: ...18 Annex A 212 SRM 3006 Narda ...
Page 230: ...19 Ordering Information 218 SRM 3006 Narda ...
Page 238: ...Index 226 SRM 3006 Narda ...
Page 239: ......