Other topics about Common Settings
Follow the steps below to use the averaging function.
Press Avg/BW > Avg Factor.
Enter the number of times for averaging in the data entry field that appears in the upper part of the screen.
Press Avg/BW > Averaging to turn on the averaging function.
For Phase Noise, Segment Phase Noise, AM and BaseBand measurement follow the steps below to use the Correlation Number.
Press Avg/BW > Correlation.
Enter the value of the correlation number in the data entry field that appears in the upper part of the screen.
If it takes more than one second for one sweep, you will see a "|" character rotates on the measurement status, which indicates the measurement is in progress.
And if it takes more than two seconds for one sweep, under the conditions that the number of correlation is set to more than two, you will see the progress bar in the left of the measurement status.
For more details on cross-correlation technique, refer to Cross Correlation Technique.
For Spectrum Monitor measurement, follow the steps below to use averaging number and resolution bandwidth
Press Avg/BW > Avg Factor.
Enter the number of times for averaging in the data entry field that appears in the upper part of the screen.
Press Avg/BW > Averaging Type to select the averaging type. You can choose either Log-Pwr Avg or Pwr Avg(RMS).
Press Avg/BW > Averaging to turn on the averaging function.
Press Avg/BW > RBW.
Enter the RBW value in the data entry field that appears in the upper part of the screen.
You can select the value from the options: 1.53 Hz, 6.1 Hz, 24.4 Hz, 97.7 Hz, 391 Hz, 1.56 kHz, 6.25 kHz, 25 kHz, 100 kHz, 400 kHz, 1.6 MHz.
Follow the steps below to use the averaging trigger.
Press Trigger > Average Trigger to toggle ON/OFF the averaging trigger.
When the averaging trigger is set to ON, a single activation of the trigger system can perform the number of measurements set by the user as the averaging factor.
The following table shows how this function works by pressing Trigger > Single when the averaging trigger is on and off.
|
Averaging Trigger |
Operation |
|
ON |
Executes state transitions among Waiting for Trigger, Trigger, and Measurement for the number of times set for averaging and then changes to the Hold state. |
|
OFF |
Enters Waiting for Trigger state once and then changes to the Hold state after measurement is completed. |
The averaging function (Setting Average Function) must be set before enabling the averaging trigger.
When the input level is very high, a message may appear to prompt you to adjust the attenuator. In this case, follow the steps below to adjust the attenuator.
Press Attn > Input Attenuator to enter the attenuator value in the data entry field that appears in the upper part of the screen.
You can select the value from the options: 0 dB, 5 dB, 10 dB, 15 dB, 20 dB, 25 dB, 30 dB or 35 dB. The appropriate input level is between 0 and 5 dBm, depending on the type of measurement or the characteristics of the DUT. Adjust the attenuator so that the input level of the RF port approximates this range.
|
Nominal Input Range |
Attenuator (dB) |
|
+ 15 dBm ~ + 20 dBm |
35 |
|
+ 10 dBm ~ + 20 dBm |
30 |
|
+ 5 dBm ~ + 20 dBm |
25 |
|
0 dBm ~ + 20 dBm |
20 |
|
- 5 dBm ~ + 20 dBm |
15 |
|
- 10 dBm ~ + 15 dBm |
10 |
|
- 15 dBm ~ + 10 dBm |
5 |
|
- 20 dBm ~ + 5 dBm |
0 |
When the downconverter is turned on, the RF input is set to Downconverter, and the external mixer is set to Not Used, the attenuator value is fixed to 10 dB.