|RAMCHECK LX Testers
RAMCHECK LX DDR3
RAMCHECK LX DDR1
RAMCHECK LX Base Tester
204-pin DDR3 SO-DIMM
200-pin DDR2 SO-DIMM
DDR2 SO-DIMM converter
66-pin DDR Chip
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| Introducing the new
RAMCHECK DDR2 Adapter (p/n INN-8668-15), the latest advanced memory test
adapter for RAMCHECK
LX and RAMCHECK. The RAMCHECK DDR2
adapter supports testing of 240-pin PC2-6400, PC2-5300/PC2-5400, PC2-4300 and
PC2-3200 DDR2 memory, including unbuffered (UDIMM) and registered modules
(RDIMM), both ECC and non-ECC, that comply with JEDEC standards. The adapter
can achieve a maximum frequency of 866MHz. (Please
see this page for information about DDR2 fully-buffered FB-DIMM
The new DDR2 adapter plugs into the
existing RAMCHECK or RAMCHECK LX base tester. This makes the DDR2 adapter by
far the most cost-effective solution for testing modern high-speed DDR2
modules. In fact, its features are what you would expect to find in test
equipment that costs $20,000 or more.
Don't let the adapter's small size fool you! High
speed operations require short connections, while the adapter is loaded with
state-of-the-art electronic components.
No special setup is required. As
with all of our products, the adapter is extraordinarily simple to use. Insert
the adapter, turn the RAMCHECK tester on, place a module into the test socket,
then press the start button. The DDR2 adapter will not work with the older
SIMCHECK II tester, although these units can be factory-converted to the RAMCHECK.
We have incorporated state-of-the-art technology in the design of the new
RAMCHECK DDR2 Adapter. The following pictures provide you with a look
"under the hood."
DDR2 Advanced Technology
|| State-of-the-art controller
featuring our improved 866MHz second generation DDR2 test engine.
||State-of-the-art high efficiency
switching power regulator to generate the DDR2 STTL-18 interface power
||Advanced analog section for
measuring the module's current, voltages and the board's temperature.
||333-1100MHz DDR2 clock generator.
resolution VDD high efficiency switching power regulator. Provides twice the
current capabilities of the previous version of the DDR2 adapter.
The RAMCHECK DDR2 adapter includes many new
features which are relevant to the differences between DDR2 technology and the
older DDR technology. It also includes many of the new advanced features first
introduced with our DDR Pro. Please see the screen shots below (with the
RAMCHECK LX base tester display).
|Introducing the RAMCHECK
||RAMCHECK automatically identifies the presence of the new DDR2
||RAMCHECK prompts the user to insert a 240-pin DDR2 module and
start the test with F1.
| BASIC TEST
||Basic Test screen shows the size, the speed, the voltage, the test
pattern, the module's bank and the CAS Latency. This example shows testing at
800MHz with an automatic setting of CAS Latency to the default value of CL=5
for this frequency.
this Basic Test screen we test a 64Mx64 ECC module at 667MHz with the default
CAS Latency of 4. This module is unbuffered.
this Basic Test screen we test a 128Mx64 (1GB) module at 533MHz with a reduced
CAS Latency of 3. Some 533MHz modules which are normally designed for CL=4 may
still pass tests conducted at the more demanding CL=3.
DDR2 adapter supports all popular Unbuffered, Registered modules. In this Basic
Test screen we test a Unbuffered 32M64 (256MB) module at 533Hz with the default
CAS Latency of 4.
this Basic Test screen we test a Registered 64Mx72 (512MB) module at 400MHz
with the default CAS Latency of 3.
addition to the industry standard frequencies of 400MHz, 533MHz 667MHz and
800MHz, we also offer testing at the additional frequencies of 866MHz, 600MHz
and 466MHz. These frequencies can be used to gauge if a given module can run at
slightly higher frequencies than it is marked for.
||This screen appears upon a successful completion of the Basic
Test. It is followed with several detailed screens with detailed information
about the module's size and structure.
||This sample structure information screen indicates that the module
was tested at the default 1.90V. CAS Latency was the default 3/4 setting, in
which the program automatically select CL=5 for frequencies of 533MHz and
||This sample structure information screen states that the currently
tested PC2-6400 module has its SPD set for 800MHz at CL 5 and 667MHz at CL4.
| PARAMETERS, CHANGE-ON-THE-FLY
||Expanded CHANGE-ON-THE-FLY can be used to set up the Frequency,
the Voltage, the CAS LATENCY and the Refresh rate only for the current test.
Following the current test, it returns to the current setup parameters.
||Here we demonstrate how the module's frequency is overriden to
866MHz from a previous test at 800MHz.
Latency can be set at 2,3,4,5,6. Please note that not all DDR2 modules support
CL of 2 and 6. By default, the test program selects CL=3 for 400MHz and 466MHz,
CL=4 for 533MHz and 667Mhz, and CL=5 for 800MHz. At 667MHz, the test program
dynamically tries to test the module at CL=5 if CL=4 fails.
This example shows testing at 800MHz with a forced CAS Latency of CL=5. This
test ended successfully.
new DDR2 VDD Voltage setup allows the user to change on-the-fly the test
voltage in the range 1.5V-2.2V. When set to AUTO, RAMCHECK automatically tests
the module at 1.8V/1.9V. In this example, the user is selecting a VDD of 1.94
| WIRING ERRORS
||Unlike older DDR, the DDR2 devices utilize the differential DQS
technique which assigns a pair of two control lines per each DQS. In this test
error example, DQS4 line (pin 84) was stuck at 1.
DDR2 module uses new ODT control line. In this test error example, line ODT1
(pin 77) is shorted to ground.
||During Voltage Cycling, the module is tested at various voltages,
which are automatically selected based on the current frequency. Higher
frequencies require higher voltages.
March UP/DOWN test attempts to capture pattern sensitivity and addressing
Extensive Test ends with the Final Test. The module is heated up by this point
so that the test indicates the ability of the module to work at elevated
AUTO-LOOP test is great for extended burn-in. This test continues forever when
there are no failures in the device. It is terminated by the user. It similarly
follows our standard AUTO-LOOP for SDRAM and DDR1 devices.
As with all of our RAMCHECK testers, each module's
size, structure, and type are automatically detected, without the need for
user's setup. The test flow follows our standard Basic Test, Extensive Test,
and Auto-Loop process. The RAMCHECK DDR2 adapter is very simple to operate,
with little training or setup required.
|DDR2 Test Features
|Supports Burst Length of 4, and
LATENCY (CL) in the range of 2,3,4,5,6. Trcd is supported in the range of
3,4,5, and 6. Additive Latency is supported in the rane of 0,1,2,3,4, and 5.
The test allows automatic selection of CL and Trcd for different test phases.
The user can select specific CL values using SETUP or the CHANGE-ON-THE-FLY
|DDR2 Data rates : 866MHz, 833MHz,
800MHz, 733MHz, 667MHz, 533MHz, 466MHz and 400MHz.
circuitry and DCMs provides differential delays along the input data path.
and temperature measurement circuitry.
|True 1.8V testing with a wide
support range of 1.5V to 2.2V at 10mV increments.
for true STTL-18 compatibility.
capability of 64/72-bits.
test-quality ZIF socket for covenient module handling.
detection and support for Registered/Unbuffered modules.
DQS8..0/DM8..0 or DQS17..0 support.
|Four -S control
lines for up to 4-rank devices.
address lines and three BA2..0 bank select address lines to support 4GB
optional converter for 200-pin S.O. DIMM modules (p/n INN-8668-1) and future
The new RAMCHECK DDR2 adapter (p/n INN-8668-15)
can perform DDR2 tests at actual test frequencies up to 866MHz. Please note
that the previous release of the RAMCHECK DDR2 adapter (p/n INN-8668-12) has a
reduced frequency support as described here.
The new DDR2 test engine can achieve 1066MHz internal diagnostic speeds. Please
see the product specifications for futher details.
|RAMCHECK DDR2 Coverage
|Test at full frequency
||Test at full frequency
||Test at full frequency
||Test at full frequency
When ordering, please reference RAMCHECK DDR2
Adapter part number: INN-8668-15. Please note that older RAMCHECK base testers
may require a hardware upgrade in order to use the DDR2 adapter.
Please refer to this RAMCHECK upgrade page for more
here for the DDR2 Adapter manual addendum.