6.6 Setting the reference level (Reference Level)
Narda IDA-3106 99
6.6.2 Automatic reference level search (RL Search)
This softkey initiates a search for a suitable reference level. This is
recommended if the field situation is unknown.
Press the RL Search softkey.
The message: Searching for best reference level. Please wait. is
displayed. A measurement over the entire frequency range covered
by the antenna you are using is made in the background. This takes
several seconds. When it is completed, the device sets the reference
level to the optimum value automatically and reverts to normal
measurement mode.
NOTE: Press the ESC key if you want to cancel the process.
RL Search Type
The IDA-3106 provides two types of reference level search which can be
selected using the RL Search Type softkey (toggle function):
• Sensitive: This type is suitable for all largely static signals.
• Safe: This type allows for a higher overload reserve. It is better to set the
reference level manually if pulsed signals are being measured.
To select the search type:
Press the RL Search Type softkey.
The switch toggles between the two types each time the softkey is
pressed.
6.6.3 Measurements with preamplifier
You can activate a 20 dB preamplifier in the antenna handle when
measuring very small signals. The reference level correction is
automatically taken into account.
To activate / deactivate the preamplifier:
A Narda antenna handle is connected.
1. Press the Reference Level softkey, then press the Preamp: softkey.
The softkey indicates the staus of the preamplifier.
2. Press ESC to return to the measurement menu.
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