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This page provides answers on some of the more common questions we receive regarding our HyperTransport Analysis probes. A special thanks to all our customers who take the time to call us with suggestions.

Q. Why are there several versions of the HyperTransport Analysis Probe?

A. The FS2240 uses one 80-pin 3M connector, (3M #TS1150) and tip resistors which the designer must incorporate into the target. PC boards with 6 or more layers are recommended.

The FS2241 uses two Samtec connectors, but the tip resistors are incorporated into the analysis probe. The FS2241 can be implemented with 4 layer boards.

The FS2243 and FS2244 use a connectorless probing technolopgy. The various versions are to meet differing customer requirements.

Q. What is the physical difference between the FS2243 and FS2244 footprints?

A. Full details are in the design layout application note. Click here to view a drawing.

Q. How does the FS2240 HyperTransport Analysis Probe connect to my target system?

A. Full details and layout instructions for designing a connector into your design are included in an application note; click here to view these requirements.

Q. Which versions of HyperTransport do your Analysis Probes support?

A. The FS2240, FS2243, FS2244 support both 8 and 16 bit full duplex versions, operating up 2.4 GT/s. The FS2241 supports both 8 and 16 bit full duplex versions, operating up 400 MT/s.
PLEASE NOTE: if you are planning to do a 16 bit design at 1.6 GHz, please contact FuturePlus Systems.

Q. How does the Agilent logic analyzer connect to the HyperTransport Analysis Probes?

A. The HyperTransport analysis probes include connectors on the rear panel that attach to Termination Adapters, which in turn attach to the logic analyzer probes. The E5385A Termination Adapter is used with the 16717A and 16750A - 16752A (1 required for each pod); the E5378A Termination Adapter is used with the 16753A - 16756A, 16760A, and 16950A modules (1 required for each pod).

Q. How does the FS2241 HyperTransport Analysis Probe connect to my target system?

The FS2241 connects to your target using two 40-pin Samtec connectors. Full details and layout instructions are included in an application note, available in the HyperTransport Library.

Q. What software is included with the HyperTransport Analysis Probes?

A. Files are included that automatically set up your Agilent logic analyzer for state analysis mode and label all the signal names. Another file is the inverse assembler or protocol transactor, which translates the signals into bus transactions during state analysis.

Q. Is the Agilent 16910A state/timing card supported?

A. Yes and No. The 16910A will work with the FuturePlus HyperTransport analysis probes when Turbo Mode is not required or in Turbo Mode but only as a single machine (8 bit or 16 bit Transmit OR Receive). In order for simultaneous capture of TX and RX two separate state machines are required.

Let's clear up any confusion. When the 16910A modules are placed in turbo mode a pod pair is used for each machine to enable this function. In order for two machines to be in Turbo Mode two pod pairs would be used leaving only the 1 remaining pod pair, which is not enough for 2 machines. Each machine requires a minimum of 1 pod pair.

If you have or are considering using an Agilent 16910A state/timing module with a FuturePlus HyperTransport analysis probe, please contact us and let us verify the correct configuration for your application.

Q. Can you give me some me some more detail on how the HyperTransport analysis probe interfaces with the Agilent logic analyzer?

A. Sure. There are three attributes of a HyperTransport link that must be considered:

1. Target clock frequency varies from 200 MHz to 1.2 GHz
2. Target link width is either 8 bit or 16 bit
3. The HyperTransport link is bi-directional (Transmit and Receive). The user must decide if they wish to simultaneously view both Transmit and Receive data or just one of them.

The logic analyzer workspace has 2 machines, one transmit and one receive. The time correlation between these paths is computed by the logic analyzer. For 8 bit 1 way or 2 way, Rx data is MACHINE 1, needs 2 pods and connects to one connector on the rear panel. Tx data is MACHINE 2, needs 2 pods and connects to the other connector on the rear panel.

The 16 bit requirements take some explanation. Because the 8 bit case is a demux by 4 and the 16 bit case is a demux by 2, only half of each of the two 100 pin connectors is used for connection to the one way 16 bit. This means that the user will connect to two connectors on the back of the analysis probe with 2 termination adapters but only one POD from each termination adapter will connect to the logic analyzer. The other 2 pods are unused. This was the done so the 8 and 16 bit functionality could be combined into one product. The configuration file takes care of all necessary bit ordering. Note that TWO analysis probes are required for 16 bit 2 way. Rx data is MACHINE 1, needs 2 pods and connects to one connector on the rear panel of analysis probe number one. Tx data is MACHINE 2, needs 2 pods and connects to one connector on the rear panel of analysis probe number two.

In the 8 bit at 800 MHz case, the clock input rate to the logic analyzer is 400 MHz, so either the 16753-756 modules or the 16760 module may be used. With 16 bits at 800 MHz, the clock input rate to the logic analyzer is 800 MHz, so the 16760A Logic Analyzer module is the only one fast enough to consume the data, since the 16753A-756A is supported up to 600 MHz.

Q. Does your probe get its power from my system?

A. No. All required power is supplied by a built-in power supply. A cord is supplied for either 110 VAC or 220 VAC, depending on your country's requirements.

Q. How do I find out what are the latest versions of Agilent logic analyzer operating software?

A. Contact your nearest Agilent Call Center.

Q. How do I know which Agilent logic analyzer is best for my needs?

A. Click here.

Have a question you don't see answered? Contact Technical Support for a prompt answer.