6.9 Adjusting the Y axis (Y-Scale)
Narda IDA-3106 105
6.9 Adjusting the Y axis (Y-Scale)
All operating modes • Display
There are two ways of adjusting the Y axis:
• Manual adjustment of Y axis scaling and reference point
• Automatic adjustment of Y axis
Adjusting the Y axis manually
You can change the scaling as well as the reference point of the Y axis
(Y-Scale Ref). Changes you make are applied immediately. Y-Scale Ref is
always set relateively to the reference level (RL). By shifting the reference
point, the reference level and input attenuator are effectively uncoupled
from each other. Usually (recommended) the reference point should not be
shifted (RL +0 dB).
To change the Y axis scaling:
1. Press the Y-Scale Range softkey.
2. Use the rotary control knob to highlight the desired value.
The change is applied to the display immediately.
3. Press the OK key or the ESC key.
To change the Y axis reference point:
1. Press the Y-Scale Ref softkey.
2. Use the rotary control knob to highlight the desired value.
The change is applied to the display immediately.
3. Press the OK key or the ESC key.
To fix the Y axis:
The Y axis changes automatically if you switch the preamplifier in the
antenna handle (0 dB / 20 dB). You can fix the Y axis to prevent this from
happening, so you can more easily compare the signal shape with and
without pre amplification.
1. Press the Y-Scale Ref softkey.
2. Press the Y-Scale Ref fix softkey until On is shown.
The Y axis is fixed.
3. Press OK or ESC to exit from the menu.
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