NIFGEN Functions Supported by Device

Transcription

1 IFGE Functions Supported by Device The following table shows a comparison of the IFGE functions between the I 5431 and the I Function I 5431 I 5421 Convert to I Possible 5421 Task Error ote Digital Filter The digital filter only works for 20 and 40 MSps sample clock The digital filter works for sample clock rates of 10 If the digital filter is enabled for sample clock rates. o error is MSps and higher. An rates less than returned if the digital error is generated if 10 MSps, the filter is enabled and the digital filter is digital filter must the sample clock rate enabled and the now be disabled. is less than 20 MSps. sample clock rate is less than 10 MSps. Analog Filter Analog filter and Filter Correction Frequency are supported. An analog filter is supported. Filter Correction Frequency is not supported. Digital Pattern Output Enable Output Impedance Update Clock Source External (PXI only - PLL REF smb) Clock Mode Hi Resolution (PXI only) Set Sample Max Sample Clock Rate Rate: 40 MSps Ref 1 MHz or 5-20 MHz Clock in 1 MHz steps Frequency CLK I PXI Star PXI_Trig<0..7> Hi Resolution Automatic Max Sample Clock Rate: 100 MSps 1 MHz to 20 MHz in increments of 1 MHz. If, I If, I /A If, External (PLL REF smb) on the I 5431 will map to CLK I (CLK I smb) on the I If for, some frequencies may not work well. For Example 8 MSps works on the I 5431, but it may be coerced to MSps on the I 5421.

2 Ref Clock Source Route Signal Out Trigger Mode Trigger Synchronization External RTSI Clock OE MARKER SC OUT OUT START BOARD CLOCK SCHROIZATIO CLK I PXI_CLK10 (PXI) RTSI 7 (PCI) OBOARD REF CLOCK (PCI) OE MARKER OUT START BOARD CLOCK SOFTWARE REF I PXI_CLK10 PXI STAR CLOCK OUT PLL REF SOURCE UPDATE CLOCK OBOARD REF CLOCK I If, I If, I Immediate External Software Trigger VI PXI Star RTSI 0 RTSI 1 RTSI 2 RTSI 3 RTSI 4 RTSI 5 RTSI 6 RTSI 7 Supported Immediate If, External Software Trigger VI TTL0 TTL1 TTL2 TTL3 TTL4 I TTL5 External on the TTL6 I 5431 should TTL7 be re PXI Star for PFI <0..1> on RTSI 0 the I RTSI 1 RTSI 2 RTSI 3 RTSI 4 RTSI 5 RTSI 6 RTSI 7 PFI 0 PFI 1 PFI 2 PFI 3 Calling function will generate an error. Remove function from code. The External setting will result in an error on the I External (EXT TRIG smb) on the I 5431 will map to CLK I (CLK I smb) on the I Best synchronization is achieved with

3 Send Software Trigger Output Mode Initiate Generation Abort Generation Define User Clear User Frequency List Mode Supports: Frequency List Supports: Review function parameters. ote:frequency List will generate an error. On Abort Generation, current generation stops, and output signal goes to 0V. Mode: Current generation stops, and output signal goes to 0V. / Mode: Current generation stops, the CH 0 output remains at the last sample voltage level generated previous to responding to the abort operation. If the output must end at 0 Vdc upon abort, then the output must be programmatically driven to 0 Vdc and then reaborted. Supports only a waveform size of 16,384, and can generate any frequency desired. Supports a waveform size of any number that is an integer multiple of quantum, 4. Also, the only possible waveform generation frequencies are limited to the module min and max sample clock rates divided by the user defined waveform size. Review function parameters. Check to ensure that the previous used waveforms (assumed to be 16,384 samples) will work with the output frequency, which will have to be less than KHz. Supported ot Supported An application can be created using mode that can create a frequency sweep I 5421s with I-TClk synchronization.

4 Create Minimum waveform size:256 samples. Quantum: 8. Minimum waveform size:size depends on trigger mode. Quantum: 4. and/or Frequency list generation. Verify that the current waveform meets the I 5421 specs for the trigger mode. Clear Clear Memory Query Arb Capabilities Create Min # of Seq. Steps:1 Min # of Seq. /A Steps: ,536 Limited by available memory, but much, much larger than the I ,777,215 Create Advanced Arb Clear Min # of Seq. Steps: ,536 Marker Quantum: Any value accepted, but hardware coerces pulse placement to 8 samples. nifgen Close Closes session to IFGE driver. If hardware is currently generating a Min # of Seq. Steps:1 Limited by available memory, but much, much larger than the I ,777,215 Marker Quantum: 4 In most cases, there should be no issues, except for the case where specicific timing between analog output and marker may be slightly different due to the modules timing. See specifications for more marker information Closes session to IFGE driver. Mode: If the module

5 waveform when is currently called, the arb will generating a continue generating waveform when the waveform until called, th stopped. Either by the computer power being turned off, or a new IFGE session is opened to the module to change it's current operation.