Keysight W2630 Series DDR2 DRAM BGA Probes Installation Guide
27
Installing the Probe
2
Signals probed by the W2639A adapter
Reworking the W2639A Adapter for W2631A/B and W2633A/B Probes
The W2639A adapter is designed to provide high bandwidth performance to the oscilloscope with
proper termination. However, for use with the W2631A and W2633A DDR2 BGA probes, the VREF
point should not be terminated. These rework instructions provide a workaround to correct the
termination point of VREF at the W2639A oscilloscope probe board adapter.
The figure below shows the overall features and connection points for the probe:
Figure 15 W2639A