Specifications

Chapter 7: Theory of Operation
Acquisition Assembly
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Acquisition Assembly
The acquisition assembly consists of four identical acquisition boards. These four boards
connect to the backplane board as shown in Figure 7- 3.
Figure 7-3 Acquisition Assembly
The bottom acquisition board circuitry samples, digitizes, and stores the signals for
channel 1. The next higher acquisition board does the same for channel 2. The next
higher board is for channel 3, and the top board is for channel 4.
All four acquisition boards contain the Oak 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. Figure 7- 4 shows a block diagram of the acquisition boards
including the Oak module.
channel 4
channel 1
channel 2
channel 3