6 Functions Common to More Than One Operating Mode
Narda SRM-3006 87
Information about how to fit the antenna to a tripod is found in section 3.4.4
from page 33 onwards.
Single axis measurement
This is the default measurement for single axis antennas.
✓ A single axis or standard antenna is connected directly or by a cable to
the SRM-3006.
⇒ Select the Single Axis function from the Axis menu (default).
Isotropic measurement
The SRM-3006 provides a sequential measurement for making an isotropic
measurement using a single axis antenna. The three separate
measurements are made one after the other and the overall result is
calculated and displayed.
Note: Directional antennas such as log-periodic antennas are basically
unsuitable for such sequential measurements.
To make an isotropic measurement with a single axis antenna:
✓ A single axis or standard antenna is connected directly or by a cable to
the SRM-3006.
1. Select the Manual Isotropic function from the Axis menu.
2. Position the antenna in the direction of the X axis, and press the
Start X-Axis softkey. When the measurement has finished, press the
Stop X-Axis softkey.
3. Follow the same procedure for the Y axis and the Z axis.
4. Press the Show Isotropic softkey to display the measurement result.
To make another measurement:
Press the Start X-Axis softkey and proceed as described above.
Table 23: Single axis antenna types
Type Frequency range Preferred application
E-field antenna,
dipole, passive
27 MHz – 3 GHz Precision measurements at UHF and
TV frequencies.
E-field antenna,
dipole, passive
9 kHz – 300 MHz Precision electric field measurements
on radio/TV transmitters and industrial
equipment.
H-field antenna,
coil, active
9 kHz – 300 MHz Precise near-field magnetic field
measurements on radio/TV transmitters
and industrial equipment.
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