6 Functions Common to More Than One Operating Mode
Narda
SRM-3006
71
6.2
Setting the resolution bandwidth (RBW)
Spectrum Analysis • RBW
Level Recorder • RBW
Scope • RBW
The
r
esolution
b
and
w
idth (RBW) determines the characteristics of the
spectrum analyzer with regard to its ability to distinguish between signals
having the same amplitude. but different frequencies. Only signals having a
frequency spacing that is greater than the defined resolution bandwidth can
be distinguished from one another.
To set the resolution bandwidth:
1.
Press the
RBW
softkey.
2.
Use the rotary control to select the desired value and press the
OK
key.
ª
The selected value is applied.
6.2.1
Setting the video bandwidth (VBW)
Spectrum Analysis • RBW • VBW
Level Recorder • RBW • VBW
Scope • RBW • VBW
Noisy signals can be smoothed by selecting a suitable video bandwidth.
There are two possible ways to make the setting:
•
Off
: The SRM-3006 will automatically select the correct VBW value.
•
Manual selection
Background information:
The RBW selected for measuring signals having very close frequency
spacing must be correspondingly small. A larger resolution bandwidth
can be used for measuring wideband signals.
• The indicated level will be too low if the RBW is too small.
• Individual signals cannot be separated from one another if the RBW is
too big.
Example:
GSM frequency spacing / signal channel width = 200kHz,
RBW = 200 kHz.
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: ......