Keysight Technologies Infiniium MSOV 084A, Service Manual

Page: 149 / 164

Theory of Operation
7
Infiniium V-Series Oscilloscopes Service Guide 149
Acquisition assembly
The acquisition assembly consists of two identical acquisition boards. These two
boards connect to the backplane board as shown below.
The upper acquisition board circuitry samples, digitizes, and stores the signals for
channels 3 and 4; the lower acquisition board does the same for channels 1 and 2.
Both acquisition boards contain the Oak B module (a full-custom ball grid array
multi-chip module), the Onboard ADC, clock distribution, data management
ASICs, external acquisition memory, ADCs, communication and programming
FPGAs, and supporting power supply circuitry. The following figure shows a block
diagram of the acquisition boards including the Oak B module.
Acquisition and backplane assemblies
Acquisition boards
Backplane assembly
Top: Ch 3 & 4
Bottom: Ch 1 & 2