Atec Narda-IDA-3106 - Manual (Page 10)

LEVEL METER
Measurement principle Selective level measurement at a selectable frequency from 9.05 kHz to 5.999 999 95 GHz
Peak
Detection
Root mean square value (RMS), average time selectable from 480 ms up to 30 min
Resolution bandwidth RBW (-6 dB)
100 Hz to 32 MHz
(in steps of 100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 1000, …, 10 MHz,
13.333 MHz, 16 MHz, 20 MHz, 26.666 MHz, 32 MHz)
Type Steep cut-off channel filter (app. raised cosine)
Filter
Roll-off factor 0.16
Video bandwidth (VBW) Off, 0.01 Hz to 32 MHz (depending on the selected RBW)
Result type
Peak ACT: Displays the actual peak value
Peak MAX: Max hold function for peak values
RMS ACT: Averaging over a defined time period (0.48 s to 30 min)
RMS MAX: Max hold function for RMS values
Noise threshold
Identifies whether measured values are above the device noise floor by setting a threshold.
Selectable at 0, 3, 6, 10, 15, or 20 dB relative to device noise floor.
Measurement values below the threshold are shown as the absolute threshold value marked
with “<” (less than threshold). Only applies to the numerical result display (Value)
Extras (Transfer parameters)
“Go to … “ transfers the Center Frequency and RBW to other operating modes
Selection of individual services allows “zapping” through a service table
DIRECTION FINDING - requires Narda Active Antenna Handle
Measurement principle
Selective level measurement at a selectable frequency from 9.05 kHz to 5.999 999 95 GHz
Possible parameters and settings as specified under LEVEL METER
Antenna direction indication
Numerical display of Azimuth, Elevation and Polarization determined by the embedded
electronic compass of the antenna handle.
Outdoor
Instrument position displayed as latitude and longitude (GPS WGS84) determined by the
embedded GPS receiver of the basic unit. Optional: Graphical indication of the current
position drawn on a map.
Position indication
Indoor Instrument position set manually on an editable rectangular room layout.
Result type
Peak or RMS detection
RMS averaging time: selectable, 0.48 s to 30 min
Manual Bearing Bar graph and numerical display of the signal level and indication of the direction
Horizontal Scan
Polar diagram of the signal level vs. antenna orientation, normalized to the maximum signal.
Automatic direction finding and indication Display modes
SmartDF
Graphical indication of the triangulation results for all measurement positions. Accepts
measurements being performed by Manual Bearing or Horizontal Scan. Display of the
estimated emitter coordinates, optional drawn on a map (Option Mapping).
Discrete
For every key press on the antenna handle the polar diagram is updated with the current
signal level and compass data. At least 3 samples are required for calculating the target
azimuth (up to 2000 samples are possible). Useful for longer averaging times.
Horizontal Scan
Continuous
Every 120 ms the polar diagram is updated with the current signal level and compass data.
Start and Stop is initiated by key press on the antenna handle. The duration of a scan is
limited to a maximum of 4 min. The target azimuth is calculated automatically.
SmartDF (Localization)
Shows the vector of target azimuth related to the measurement position.
Triangulation results based on several vectors will be calculated and the geo coordinates of
the potential transmitter position will be displayed. Coordinates are referenced to the
WGS84 geodetic datum. Signal fading vs. distance can be taken into account for target
position calculation. Remotely determined vector data can be added by manual entry.
Transmitter Table
Used to simplify frequency settings and speed up finding multiple sources transmitting at
different frequencies. Tables can be created on-site and include Fcent and RBW.
Maps (option)
Display of high-resolution street maps in various zoom levels. OpenStreetMap bitmap tiles
can be downloaded from internet free of charge using the Narda Map Download Tool. Map
data are stored on microSD card and then plugged into the IDA card slot for portable use.
NSTS 0911-E0280B 10 / 14 Subject to change without notice