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Ref Level Offset
This adds the offset value to the currently indicated reference level. The reference
level offset value can be changed only by using the numeric keypad. Changing the
Reference Level Offset value does not change the trace or the input attenuation
value. The reference level offset is used when there is a gain or loss of level
between the inputs of a device under test, and the analyzer. Accordingly, a signal
level measured by the analyzer can be thought to be the input level of the device
for changing external amplitude. After the reference level offset has been changed, the new
value will be indicated below the Ref Level Offset soft key on the screen. In order to remove
offset, please press Ref Level Offset, 0, dB. Also, if you press Preset, the reference level offset
value will be established as 0 dB.
AMPLITUDE >> Ref Level Offset
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Y Axis Units
This allows the user to change the amplitude unit of measure. You can change the
amplitude unit by selecting dBm, dBmV, dBμV, Volts, or Watts.
AMPLITUDE >> Y Axis Units
5-2. BW/Avg
This activates the resolution bandwidth function, and sets the bandwidth function and the trace
average function.
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Resolution BW Auto Man
The 3 dB resolution bandwidth of the analyzer can be changed from 1 kHz to 3 MHz
in a 1. 3. 10. sequence by using the numeric keypad or the step keys. Decreasing the
Video Bandwidth increases the Sweep time in order to maintain the amplitude
calibration. Also, the resolution bandwidth is connected to the span. When the span
decreases, the resolution band will also decrease. If the resolution bandwidth is
changed, the video band will be changed in order to keep the ratio of VBW/RBW
when in automatic connection mode. When it is not connected, a “#” mark will
appear beside the Res BW on a display. Connecting the resolution bandwidth again
requires you to press Res BW(Auto).
BW/AVG >> Res BW
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