Low Jitter Performance of WRS-FL
The performance of WRS-FL-LJ, a special version of WRS-FL[1] with
low-jitter circuits support, has been tested.
Comparing to standard WRS-FL, the WRS-FL-LJ includes two major
improvements:
1: adding a extra AD9516 for 10MHz clock input
2: replacing the TCVCXO VM53S with a better TCVCXO or OCXO (
T604-025.0M[2] used in this test).
The phase noise performance and Allen deviation test results are summarized below.
| WRS-FL-LJ as GrandMaster | WRS-FL-LJ after 10 cascade stages | |
|---|---|---|
| Phase Noise Performance | -100.1dBc/Hz at 1Hz, | |
| -103.0dBc/Hz at 10Hz, | ||
| -119.8dBc/Hz at 100Hz, | ||
| -135.5dBc/Hz at 1KHz | -87.1dBc/Hz at 1Hz, | |
| -84.3dBc/Hz at 10Hz, | ||
| -115.7dBc/Hz at 100Hz, | ||
| -134.9dBc/Hz at 1KHz, | ||
| Allen Deviation | 7.97E-11 (Tau=0.01s), | |
| 1.23E-11 (Tau=0.1s), | ||
| 1.32E-12 (Tau=1s), | ||
| 1.43E-13 (Tau=10s) | 1.93E-10 (Tau=0.01s), | |
| 9.57E-11 (Tau=0.1s), | ||
| 9.98E-12 (Tau=1s), | ||
| 9.24E-13 (Tau=10s) | ||
| PPS/10MHz Jitter | < 10ps | <10ps |