Wilder Technologies SATA 2.5 Test Adapter Especificaciones descargar pdf (Pagina 85)

Agilent Technologies, Inc.

Agilent Technologies, Inc. 85 SATA PHY, TSG & OOB Test MOI v.1.1 Revision 1.4

12. Measure the reported DJ difference between PJ on versus PJ off DJ = DJON - DJOFF and compare to the

(DJ -3dB) value, DJ3DB. Shift the frequency of the PJ source until the reported DJ difference between PJ

on versus PJ off is equal to (DJ -3dB). The PJ frequency is the -3dB BW of the JTF; record this value

F3DB.

13. Adjust the JMD settings to bring the PJ –3dB frequency to 2.1MHz +/- 1MHz for Gen1 or Gen2

calibration, 4.2MHz +/- 1MHz for Gen3 calibration. Repeat steps 4 through 12 until both the jitter

attenuation and 3dB frequency are in the acceptable ranges.

a. For Agilent’s DSAX93204A, DSAX92804A, DSAX92504A, DSAX92004A and DSAX91604A

and DSA91204A Infiniium Oscillocope, the clock recovery settings used to achieve the JTF

calibration requirements are:

Gen 1: 2

order PLL, Loop Bandwidth = 2.10 MHz, Damping Factor = 0.767

Gen 2: 2

order PLL, Loop Bandwidth = 2.10 MHz, Damping Factor = 0.767

Gen 3: 2

order PLL, Loop Bandwidth = 4.20 MHz, Damping Factor = 0.767

b. These settings meet the JTF calibration requirements at all data rates

c. These settings are the same for the DSO81304A Infiniium Oscilloscope

1 2 ... 80 81 82 83 84 85 86 87

Sin comentarios

Wilder Technologies SATA 2.5 Test Adapter Especificaciones Pagina 85