DDR Memory FAQs
DDR Product Overview
DDR1 333 DIMM
DDR1 333 SODIMM
DDR1 400 DIMM
DDR1 Embedded
DDR2 667 DIMM
DDR2 667 SODIMM
DDR2 800 DIMM
DDR2 Embedded
DDR3 1067 DIMM

Q. Which SO-DIMMs does your FS2337 DDR2 SO-DIMM Analysis Probe support?

A.The FS2337 supports the PC2-4300 memory module, a 200-pin, 267 MHz clock (533 MT/s data rate), 64-bit wide, (Up to 72 bits with ECC) Unbuffered Synchronous Double Data Rate 2 (DDR2) DRAM Small Outline Dual In-Line Memory Module (DDR2 SDRAM SODIMMs). It also supports a slower verion, the PC2-3200, using 200 MHz clock (400 MT/s data rate) DDR2 SDRAMs SODIMM.

Q. Why does the FS2337 take four logic analyzer cards when it only requires four termination adapters?

A. The FS2337 requires up to four logic analyzer cards depending on whether protocol analysis (double probed) or timing analysis is being used, and the type of logic analyzer card being used. The customer will need 4 cards/8 pod pairs/16 pods and 4 - E5378A termination adapters:
* 2 cards/4 pod pairs/8 pods are needed for the data and command bus
* 1 card/2 pod pairs consumed by the new internal double probing system (multiplexing) for data bus only
* 1 card/ 1 pod pair consumed by Turbo Mode for the data bus

This totals 4 cards/7 pod pairs/14 pods used by this configuration

PLEASE NOTE: using the FS2337 may require a 16700 operating system update. Please contact FuturePlus for details.

Q. Why can't I use a 16750-752 class of logic analyzer module with the FS2337? The 16750-752 modules are spec'ed at 400 MT/s which is what the DDR2 bus operates at.

A. Good question. The FS2337 is supported at up to 667 MT/s with the 16753-756 because of the data valid requirements of the DDR2 bus. The DDR2 bus data valid window can be as low as 900 ps. The 16750-752 cards require a minimum of 1200 ps. The 16753-756 can operate as low as 800 ps. If your data valid window on your bus is higher than 1200 ps you may be able to use the 16750-752 cards.

Q. Can you guarantee the FS2337 will operate correctly in my system?

A. Another good question. Electrically, the DDR2 bus is extended a small amount in the design of the FS2337. Depending on the design of the system being tested, users may experience difficulties with this extension of the DDR2 bus. The passive logic analyzer termination presents a single electrical load on the DDR bus via low capacitance, high impedance terminators, and also provides a matched impedance to the logic analyzer. The analysis probe includes four logic analyzer connectors. Factors beyond the control of FuturePlus Systems that can have a significant effect on the performance of the whole DDR2 system include the type of memory controller, the target layout, the type of DIMM used, which DIMM socket is being probed, and which logic analyzer cards are being used. So, we cannot guarantee your success. We have made every effort to give you a product that has every chance of succeeding.

Q. Can the FS2337 perform Eye Scan measurements?

A. The FS2337 can do Eye Scan for Command activity clocked by CK0. If the target can generate just Read or Write activity, then a data strobe signal (DQS2, DQS7, or DQS17) can be used to clock EyeScan for the data signals.

Q. What software is included with the FS2337 DDR2 Analysis Probe?

A. Files are included that automatically set up the Agilent logic analyzer for state or timing analysis mode and label all the signal names. Another file contains the protocol decoder, which translates the data into memory protocol during state analysis.

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

A. No. All necessary power is supplied by the logic analyzer.

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.

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