The automatic settings, enabled by default when Pulse Building starts up, allow the system to select default values automatically based on the current system hardware.
A check in this box enables Pulse Building to automatically use the preferred sample rate specified by the Arb in the current hardware configuration. Typically this is the maximum sample rate supported by the Arb. This allows easy sharing of Pulse Building setting files across hardware platforms.
When Auto Sample Rate is disabled, you must enter the correct sample rate for the arbitrary waveform generator, which is used by Generate Correction.
Auto Sample Rate is disabled and External Clock is enabled when using an external sample clock for the Arb, or when synchronizing multiple Arbs. The software does not control the instrument providing the external sample clock. When using an external clock the frequency resolution is dependent on the external clock source.
The sample clock minimum, maximum, resolution, and default values must be specific to your system configuration:
|
Default (Reset) |
100 MHz |
|
Minimum |
10 MHz |
|
Maximum |
100 MHz |
|
Resolution |
0.1 Hz |
|
|
External I/Q |
Wideband I/Q |
|---|---|---|
|
Default (Reset) |
1.25 GHz |
1.25 GHz |
|
Minimum |
156.25 MHz |
156.25 MHz |
|
Maximum |
1.25 GHz |
1.25 GHz |
|
Resolution (internal clock only supports these frequencies) |
156.25 MHz 312.5 MHz 625 MHz 1.25 GHz |
156.25 MHz 312.5 MHz 625 MHz 1.25 GHz |
Click here to view
a pulse train sampled at 100 MHz and 50 MHz. A high sampling rate increases
the waveform data sample resolution accuracy; rise time and fall time
resolution is better with a high sampling rate.
This parameter is available for any system configured with an external Arbitrary Waveform Generator. It is disabled for any system configured with the internal baseband generator.
A check in this box enables Pulse Building to automatically choose the Arb anti-alias filter based on the current sample rate. The auto capability is hardware dependent and allows easy sharing of Pulse Building setting files across hardware platforms.
When Auto Alias Filter is disabled, you must set the anti-alias filter frequency.
Systems configured with the N603xA/M933xA or N824xA Arbitrary Waveform Generators support:
Through
250 MHz
500 MHz (default)
Sets the Arb peak to peak output voltage. This parameter is available for any system configured with an external Arb. It is disabled for any system configured with the internal baseband generator. The minimum, maximum, and reset values are system specific. This value can be changed to optimize the signal broadband noise versus distortion caused in the I/Q modulation chain.
A check in this box enables Pulse Building to automatically set the Arb output voltage to best match the Signal Generator I/Q inputs. Pulse Building linearly scales the RMS voltage sent to the Signal Generator for power search when the ALC is off. When Auto Output Voltage is disabled, you must set the Arb output voltage. The automatic capability is hardware dependent and allows easy sharing of Pulse Building setting files across hardware platforms.
Systems configured with the N603xA/M933xA or N824xA Arbs support the following peak to peak voltages:
|
|
Range |
Default Value |
|---|---|---|
|
External I/Q |
0.34 to 0.5 V and 0.68 to 1.0 V |
0.4 V |
|
Option 015 |
0.34 to 0.5 V and 0.68 to 1.0 V |
1.0 V |
|
Option 016/H16 |
0.68 to 1.0 V |
1.0 V |
Setting the Arb output voltage too low can result in an unleveled signal and a higher noise floor. Increase the Arb voltage or reduce the signal Amplitude.
