See Figure 1.)Advanced Waveform Utility
Waiting Time for Equalizer Convergence
Calibration Waveform Sample Rate
Calibration Waveform Sample Rate
Calibration Waveform Sample Rate
This setting references the hardware already configured in the 89600 VSA software under Hardware > Configurations > Current Analyzer Configuration. However, these selections must first be configured in the Keysight Connection Expert before they appear in the VSA. (See Figure 1.)
In the AWU software, when the Calibration dialog is first opened, no hardware is selected and “Current” is displayed in the VSA Hardware Configuration field as placeholder. If you click or touch the Calibrate button at this point, the 89600 VSA uses its current selection. This is Analyzer4 in the example shown in Figure 1.
To select different hardware addresses other than “Current,” click or touch the Launch 89600 VSA button. This opens the VSA software, providing its installed, and retrieves all available VSA hardware configurations (See Figure 2), populating the VSA Hardware Configuration drop-down menu in the AWU software. (See Figure 3.)
|
State Saved |
Yes |
Sets the input channel if an oscilloscope is used to measure the output of the signal generator. Currently only channel 1 is used.
|
Preset |
1 |
|
State Saved |
Yes |
|
Min |
1 |
|
Max |
4 |
|
Resolution |
1 |
This setting sets center frequency used to make channel equalization calibration. Its default value is equal to the RF frequency of signal generator. You can set a customized value in case needed.
|
Preset |
1GHz |
|
State Saved |
Yes |
|
Min |
1e6 |
|
Max |
128e9 |
|
Resolution |
1 |
If this setting is set to ON, current VSA configuration should be saved to a temporary .setx file. It will be recalled after calibration.
|
Preset |
OFF |
|
State Saved |
Yes |
|
Choices |
ON | OFF |
Only a single carrier is supported at this time.
|
Choices |
16QAM | QPSK | BPSK | Predefined Sequence | Multitone Stimulus |
|
Couplings |
16QAM | QPSK | BPSK is used for Channel Equalization; Predefined Sequence is used for IQ Calibration; and Multitone Stimulus for multitone calibration type. |
|
Preset |
16QAM |
|
State Saved |
Yes |
Determines the calibration algorithm for the calibration process.
|
Choices |
Channel Equalization | IQ Calibration | Multitone Calibration |
|
Preset |
Channel Equalization |
|
State Saved |
Yes |
Sets the bandwidth for the calibration process. The effective correction data can be retrieved.
|
Preset |
100MHz |
|
State Saved |
Yes |
|
Min |
1e6 |
|
Max |
32.5e9 |
|
Resolution |
1 |
Sets the Oversampling Ratio value to apply on original calibration reference signal symbols. When Calibration waveform type is a single carrier, the 16QAM signal is used as the calibration reference signal. If the calibration bandwidth is 100 MHz, then the symbol rate of the 16QAM signal is 100 MHz. The final sample rate of the calibration reference signal is the Symbol rate*Oversampling Rate.
|
Preset |
1.5 |
|
State Saved |
Yes |
|
Min |
1.25 |
|
Max |
100 |
|
Resolution |
1 |
Sets the wait time for the VSA 89600 to get the convergence result in the equalization.
|
Preset |
1 second |
|
State Saved |
Yes |
|
Min |
1 |
|
Max |
40 seconds |
|
Resolution |
0.001 |
This setting sets the sample rate of the test stimulus.
|
Couplings |
Visible in Multitone Calibration. |
|
Preset |
Initial value is the sample rate of waveform. |
|
State Saved |
Yes |
|
Min |
1e6 |
|
Max |
300e9 |
|
Resolution |
1 |
This setting sets the tone spacing of the test stimulus
|
Couplings |
Should not exceed Calibration Waveform Sample Rate. |
|
Preset |
1e7 |
|
State Saved |
Yes |
|
Min |
1e3 |
|
Max |
128e9 |
|
Resolution |
1 |
This setting sets the number of tones in the test stimulus.
|
Couplings |
(Number of Tones - 1) * Tone Spacing ≤ Calibration Waveform Sample Rate |
|
Preset |
11 |
|
State Saved |
Yes |
|
Min |
2 |
|
Max |
128e9 |
|
Resolution |
1 |
This setting sets the bandwidth in which the calibration process will be covered, and effective correction data can be got.
|
Couplings |
Calibration bandwidth cannot exceed calibration waveform sample rate. |
|
Preset |
100MHz |
|
State Saved |
Yes |
|
Min |
1e6 |
|
Max |
32.5e9 |
|
Resolution |
1 |
This setting sets the sample rate of test stimulus.
|
Couplings |
Visible in IQ Calibration. |
|
Preset |
Initial value is the sample rate of waveform. |
|
State Saved |
Yes |
|
Min |
1e6 |
|
Max |
32.5e9 |
|
Resolution |
1 |
This setting sets the number of predefined sequences captured by VSA 89600.
|
Couplings |
Visible in IQ Calibration. |
|
Preset |
3 |
|
State Saved |
Yes |
|
Min |
3 |
|
Max |
20 |
|
Resolution |
1 |
|
Range |
Channel Equalization | IQ Calibration | Multitone Calibration | Homodyne Calibration |
|
Preset |
Channel Equalization |
|
State Saved |
Yes |
|
Range |
Multitone Stimulus | Predistorted Multitone Stimulus |
|
Preset |
Multitone Stimulus |
|
State Saved |
Yes |
|
Notes |
This setting sets the sample rate of test stimulus |
|
Couplings |
Calibration Waveform Sample Rate = 1.28 * (Number of tones - 1) * Tone Spacing |
|
Preset |
1.28e9 |
|
State Saved |
Yes |
|
Min |
20e3 |
|
Max |
128e9 |
|
Resolution |
1 |
|
Couplings |
Read only when Calibration Waveform Type is Predistorted Multitone Stimulus. |
|
Preset |
1e7 |
|
State Saved |
Yes |
|
Min |
1e3 |
|
Max |
1e9 |
|
Resolution |
1 |
|
Notes |
Number of Tones should be odd. |
|
Couplings |
Read only when Calibration Waveform Type is Predistorted Multitone Stimulus. |
|
Preset |
101 |
|
State Saved |
Yes |
|
Min |
21 |
|
Max |
1e6 |
|
Resolution |
1 |
|
Couplings |
Calibration Waveform Sample Rate = (Number of tones - 1) *Tone Spacing |
|
Preset |
1e9 |
|
State Saved |
Yes |
|
Min |
1e6 |
|
Max |
128e9 |
|
Resolution |
1 |
