Acquisition Assembly - Keysight 90000 X Series Service Manual

Chapter 7: Theory of Operation

Acquisition Assembly

Acquisition Assembly
The acquisition assembly consists of two identical acquisition boards. These two
boards connect to the backplane board as shown in Figure 7- 2.
Figure 7-2 Acquisition and backplane assemblies
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 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- 3 shows
a block diagram of the acquisition boards including the Oak module.
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