Solution
Yes, the NI PXIe-6674T can generate and route multiple different clock signals through PFI channels, but there are some limitations to consider:
- For applications requiring 4 clock channels, you need to use PFI 0–4. LVDS-type PFIs cannot be used in this case because each board only supports 3 LVDS channels.
- Clock frequencies can be flexibly configured using the DDS settings.
- Clock signals are generated and routed via the Sync Clock, which is derived from the DDS output and further divided using two configurable dividers.
- Supported divider values include: 2, 4, 8, 16, 32, 64, 128, 256, and 512.
Example Configuration:
- DDS = 5 MHz
- PFI0 (Yellow) = 5 MHz (no division) → Period T = 200 ns
- PFI1 (Blue) = 5 MHz ÷ 2 (Divider 1) = 2.5 MHz → Period T = 400 ns
In summary, the 6674T offers flexible clock generation capabilities, but the number of available PFI channels and divider settings must be considered when designing your system.
