Agilent Technologies, Inc.
Agilent Technologies, Inc. 43 SATA PHY, TSG & OOB Test MOI v.1.1 Revision 1.4
Test OOB-01 – OOB Signal Detection Threshold
Purpose: To verify that the OOB Signal Detection Threshold of the Product Under Test’s (PUT’s) receiver is
within the conformance limits.
References:
[1] Serial ATA Revision 3.0, 7.2.1, Table 34 – OOB Specifications
[2] Ibid, 7.2.2.6.2
[3] Ibid, 7.4.24
[4] SATA Interoperability Program Unified Test Document, 2.18.1 – OOB Signal Detection Threshold
Resource Requirements:
• Agilent Agilent DSAX93204A, DSAX92804A, DSAX92504A, DSAX92004A and DSAX91604A
(32GHz, 28GHz, 25GHz, 20GHz and 16GHz bandwidth, 80GS/s per channel) or Agilent DSA91204A
(12GHz bandwidth, 40GS/s per channel)
• Agilent N5411B SATA Electrical Performance Validation and Compliance Test Software
• Wilder Technologies SATA Gen3 Receptacle Adapter SATA-TPA-R or ICT-Lanto SATA Receptacle
Gen 3 TF-1R31 or Crescent Heart Software TF-SATA-NE/ZP or TF-eSATA-NE/ZP test adapter or
equivalent
• Agilent 81134A 2-channel 3.35GHz Pulse/Pattern Generator
• Agilent 8493C-020 20dB DC-26.5GHz Passive Attenuator (Qty. 2 needed)
• Agilent 11636B Power Divider (not power splitter) DC-26.5GHz (Qty. 2 needed)
• Agilent 5062-6681 6-inch SMA cable (Qty. 4 needed to mix 81134A outputs for OOB testing)
See appendix A for details.
Last Template Modification: March 25, 2009 (Version 1/02)
Discussion:
Reference [1] specifies the Transmitted Signal conformance limits for SATA products. This specification
includes conformance limits for the OOB Signal Detection Threshold. Reference [2] provides the
definition of this term for the purposes of SATA testing. Reference [3] defines the measurement
requirements for this test.
This measurement is performed by having the 81134A continuously issue a nominal OOB
COMRESET/COMINIT 6 burst sequence and to monitor the products COMINIT and COMWAKE
response. This test is run twice to ensure that the product correctly responds to a 210mV amplitude OOB
sequence and that the product correctly rejects a 40mV (Gen 1) or 60mV (Gen2 or Gen3) amplitude OOB
sequence. When a device detects COMRESET from the host, it should respond with COMINIT. If the
device supports asynchronous recovery (ASR), then it may send unsolicited COMINITs. The timing of the
COMRESET repetition is then adjusted to ensure an accurate test. When a host detects COMINIT from the
device, it should respond with COMWAKE. If the host supports asynchronous recovery, it may respond
with COMINIT. Usually the host will respond with COMWAKE properly upon receiving every other
COMINIT.
Test Setup:
The following setup diagram, provided in the Agilent N5411B SATA test software prior to running the
OOB tests, will guide the correct connection of the 11636B Power Dividers to the inputs of the 81134A
Pattern Generator using the 5062-6681 short SMA cables. This allows for the electrical idle to be properly
generated by the pattern generator prior to sending the OOB signals to the products. Most pattern
generators cannot generate a tri-state signal with proper electrical idle, and power dividers must be used to
create these tri-level signals from two channels of a dual-state pattern generator output. More information
on this setup procedure can be found in Annex A. In order to maintain the proper differential polarity and
pattern disparity, it is important to ensure that the Channel 1 positive (+) output of the 81134A is mixed
with the Channel 2 negative (-) output of the 81134A, as shown in the following diagram, to provide the
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