Knowledge Base

This is a slide deck.
Chapter 1 (20 slides) provides an overview of clock synchronization applications.
Chapter 7 (11 slides) compares various types of oscillator.
Chapter 8 (33 slides) provides an overview of timekeeping.
The remainder of the 300 slides describe engineering details of quartz oscillators.

Subclause 40.6.1.1.1 of the IEEE 802.3 Standard defines a test channel to be used in the testing of the jitter on the reference clock of 1000BASE-T devices. The channel consists of two short segments of 120m UTP Category 5 compliant cable, along with one (or two, if necessary) long (the exact length is dependent upon the attenuation of the entire channel) segment of 100m UTP Category 5 compliant cable. The channel is to meet or exceed the insertion loss, crosstalk, and return loss requirements as specified in clause 40.7. The objective of this paper is to outline and describe, in detail, the specifications defined in subclause 40.6.1.1.1 of the IEEE 802.3-2002 standard for the Jitter Test Channel, and observe the results of the testing of a completed test channel. Included are plots, outlining the characteristics of the constructed test channel, along with the limits of each specific test.

PoE FAQ's

Overview of the basic SCSI information needed to identify each command.

Topics of transmission Speeds and Unit Intervals, OOB Construction, and Differential Signaling.

Discussing OOB State Machine, speed negotiation, 8b10B Encoding and Synchronization State Machine.

Presenting Clause 7 with a primitive Overview, Primitive Types and definitions, and open Connection Handshake.

Presenting the topics of Transport Layer Protocols: SSP, SMP and STP.

Overview of the physical Layer Test Suites and Equipment, Protocol test suites and equipment and Interop testing.

Overview of the types of SAS Devices, SAS/SATA Interop, and cables and Connector Types.

SATA uses in the enterprise
SATA uses in personal computing
Device form factors
ODDD, HDD and SSD Devices
Port Multipliers.

SATA uses in the enterprise
SATA uses in personal computing
Device form factors
ODDD, HDD and SSD Devices
Port Multipliers.

SATA uses in the enterprise
SATA uses in personal computing
Device form factors
ODDD, HDD and SSD Devices
Port Multipliers.

Overview on the device command Layer Protocols.

Transport layer overview.

Presenting the topics: 8b10b Encoding, SATA Primitive, ALIGN use in SATA, Hold use, & Cont use.

Overview of the Chapter 8 OOB and Phy Power States.

Overview of the SATA PHY Layer.

Overview on the application layer.

Step by step overview on the PCIe Express.

An overview of various wireless networking technologies, their relationship to one another, and a look at emerging standards.

In the growing world of ubiquitous networking, people often take for granted that interoperability exists between their network devices and the networks they are connecting to. Consortium vendors and international standards bodies are formed to establish standards on how devices should behave if they wish to communicate with each other. However, verifying conformance to these standards is no trivial task. The RSP was developed to add to the Wireless LAN Consortium's testing capabilities. The RSP has the capability of reacting to wireless traffic in a manner that tests a device's handling of uncommon, but very important conditions. The RSP Consists of an 802.11 MAC'less card from Intersil, interfaced to an Altera programmable logic device, which in turn communicates with a PC through a USB microcontroller.

The chaotic nature of the radio frequency medium of 802.11 wireless networks makes it problematic to obtain accurate and precise repetition of performance tests and measurements. Environmental variables that deeply influence link performance must be addressed before throughput testing can be accurately measured across various devices. An RF shielded room with anechoic foam provides the most ideal environment for throughput tests compared to either an RF shielded room without foam or an open air laboratory. Location within the RF shielded room with anechoic foam was shown to have a negligible effect on performance, but using an RF absorbing rubber mat under a device was shown to reduce reflections, producing an optimal environment for throughput testing.

Overview of Quality of Service (QoS) Enhancements for the MAC based on TGe draft 6.0.

This presentation provides an overview of clock and time synchronization across heterogeneous networks using the published standards:
- IEEE Std 802.1AS(TM)-2011 and
- IEEE Std 802.11(TM)-2012 Timing Measurement

With special focus on wireless / 802.11 links