Stanford Research Systems SR844 User Manual page 167

Chapter 6
Circuitry, Parts Lists and Schematics
In This Chapter
Service
Circuit Board Locations
Circuit Descriptions
844C: CPU/Power Supply Board
844S: Display Board
844K: Keypad Board
84RTO: Rear Panel and TTL Out Board
84MBD: Motherboard
84SIG: Signal Input Board
84CMX: Chop and Mix Board
84IFN: I.F. and Noise Board
84XRF: External Reference Board
84DVC: Divider Chain Board
84DSP: Digital Signal Processing Board
Parts Lists
CPU and Power Supply (844C) Board
Front and Rear Panel (844S, 844K, 84RTO) Board
Motherboard (84MBD)
Signal Input (84SIG) Board
Mixer (84CMX) Board
IF Amplifier (84IFN) Board
Reference (84XRF) Board
Divider Chain (84DVC) Board
Digital Signal Processor (84DSP) Board
Final Assembly and Miscellaneous
Schematic Diagrams
SR844 RF Lock-In Amplifier
6-1
6-3
6-4
6-6
6-6
6-8
6-9
6-9
6-10
6-12
6-13
6-15
6-17
6-20
6-22
6-25
6-26
6-31
6-38
6-47
6-51
6-55
6-64
6-70
6-76
6-79
6-80