Circuit Board Locations - Stanford Research Systems SR844 User Manual

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Circuit Board Locations

Circuit Board Locations

Rear Panel
Board
Circuit Boards
The SR844 has five main printed circuit boards shown above.
•
The CPU/Power Supply board (844C) contains the host processor, interfaces and
power supply.
•
The Keypad board (844K) holds the front panel indicators and keypad.
•
The Display board (844S) holds the digital readout displays.
•
The Rear Panel board (844RTO) holds the rear panel BNC connectors.
•
The Motherboard (844MBD) holds 6 daughter boards and the actual lock-in
circuitry. See the next page for the locations of the daughter boards.
SR844 RF Lock-In Amplifier
CPU and Power
Supply Board
Motherboard
Display Board
Keypad Board