Description
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The product defined by part numbers 778991-01, 778991-02, 778991-03 is a model PCI-6561. This device is characterized by a frequency range on its onboard clock from 48 Hz to 100 MHz, with an input frequency range for CLK IN from 20 kHz to 100 MHz. Additionally, the STROBE frequency range also spans from 48 Hz to 100 MHz.
The clock resolution of the PCI-6561 is remarkably precise at 10 ps, and it boasts a typical lock time of 400 milliseconds. The reference clock frequency range is specified as 10 MHz ± 50 ppm, and it supports a duty cycle range from 25% to 75%. This model is compatible with several software platforms including LabVIEW, LabWindows/CVI, Measurement Studio, Microsoft Visual C/C++, and .NET. Its configuration tool is the Measurement & Automation Explorer (MAX).
Regarding its operational features, the PCI-6561 supports various trigger modes and requires a warm-up time of 15 minutes to reach operational stability. The accuracy of frequency measurement is noted as ± 100 ppm. Finally, the unit has a physical weight of 410 grams, although the dimensions were not specified in the given details.
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| Specification | Details |
|---|---|
| Part Numbers | 778991-01, 778991-02, 778991-03 |
| Model | PCI-6561 |
| Frequency Range (On-Board clock) | 48 Hz to 100 MHz |
| Input Frequency Range (CLK IN) | 20 kHz to 100 MHz |
| STROBE Frequency Range | 48 Hz to 100 MHz |
| Clock Resolution | 10 ps |
| Typical Lock Time | 400 milliseconds |
| Reference Clock Frequency Range | 10 MHz ± 50 ppm |
| Duty Cycle Range | 25% to 75% |
| Software Compatibility | LabVIEW, LabWindows/CVI, Measurement Studio, Microsoft Visual C/C++, .NET |
| Configuration Tool | Measurement & Automation Explorer (MAX) |
| Trigger Modes | Various |
| Warm Time | 15 minutes |
| Accuracy (Frequency Measurement) | ± 100 ppm |
| Weight | 410 grams |
| Dimensions | Question 1: What is the frequency range of the PCI-6561?




