Wilder Technologies SATA 2.5 Test Adapter Especificaciones descargar pdf (Pagina 20)

Agilent Technologies, Inc.

Agilent Technologies, Inc. 20 SATA PHY, TSG & OOB Test MOI v.1.1 Revision 1.4

(MFTP lower), DHM (worst-case differential HFTP or differential MFTP), A (LBP lone 1-bit upper) and B

(LBP lone 0-bit lower) are measured and computed to determine the final Vtest value for the Minimum

Amplitude test. These interim values and screen captures can also be a helpful aid in debugging which

pattern, and specifically, which bit failed the test. Similar steps are used to setup the MFTP and LFTP

patterns used for the Maximum Amplitude test.

NOTE: The N5411B maximum amplitude test does not test physical voltage, but instead, the ratio of

amplitude histogram points at or above the physical specification limit compared to total amplitude

histogram points at or above +/- DOV/2. Again, pu, nu, NU, pl, nl and NL are reported out to assist in

debug. This methodology is provided per the VdiffTX, Max measurement definition in reference [1].

Either “PASS” or “FAIL” is shown for the minimum amplitude test in the report generated at the

completion of the testing.

Reference [4] addresses the measurement of VdiffTX, Min per the SATA-IO LOGO IW testing

requirements as follows:

DOV Min = Vtest(min) = min(DH, DM, VtestLBP)

Observable Results:

The Differential Output Voltage shall be between the limits specified in reference [4]. For convenience,

the values are reproduced below. For the differential amplitude voltage test to pass, the minimum

differential amplitude value, Vtest(min), must meet the DOV minimum test limits. Measurements for pu

and pl should be recorded as well but are informative only.

PUT Type

DOV Min

Gen1i

400 mV

Gen2i

400 mV

Possible Problems:

Some products may not support disconnect during the process of enabling BIST and testing. For these

products, refer to the Disconnect sections of reference [5] for setup requirement.

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