Fluke Biomedical 945A - Manual (Page 8)

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List of Figures
Page
Figure 1-1. Detector Energy Response ......................................................................................................................... 1-3
Figure 1-2. Front Panel, Model 946A-200 Universal Digital Ratemeter ...................................................................... 1-6
Figure 4-1. Detector Electronics Block Diagram........................................................................................................ 4-22
Figure 4-2. Page 1 of 3. Block Diagram - Main Circuit Board .................................................................................. 4-24
Figure 4-3. Read / Write Timing Diagram.................................................................................................................. 4-27
Figure 4-4. Write Cycle Clock Timing Diagram ........................................................................................................ 4-28
Figure 4-5. Front Panel, Model 946A-200.................................................................................................................. 4-39
List of Tables
Page
Table 3-1. Rear Panel Connections ............................................................................................................................. 3-2
Table 3-2. Connector P1 - Input/Output ...................................................................................................................... 3-3
Table 3-3. Connector P2 - Detector Connector ........................................................................................................... 3-4
Table 3-4. Connector P3 - Power Input ....................................................................................................................... 3-4
Table 3-5. Connector P6 - Auxiliary I/O ..................................................................................................................... 3-5
Table 3-6. Connector P7 - RS232C ............................................................................................................................. 3-5
Table 4-1. Response Time ........................................................................................................................................... 4-2
Table 4-2. Setpoints................................................................................................................................................... 4-12
Table 4-3.
Preamplifier Interface Board 977-210-10 Switch Settings....................................................................... 4-15
Table 4-4. Jumper Positions for Preamplifier Interface Board 977-210-10............................................................... 4-15
Table 4-5. Jumper Positions for Preamplifier Electrometer Board 977-200-15 ........................................................ 4-15
Table 4-6.
Model 946A-200 Option Jumpers ............................................................................................................ 4-16
Table 4-7. UDR Function Switch Positions/Function ............................................................................................... 4-17
Table 4-8. Model 946A-200 Error Codes .................................................................................................................. 4-17
Table 4-9. Preamplifier Register Addresses .............................................................................................................. 4-19
Table 4-10. Electrometer Control Bit Assignments..................................................................................................... 4-20
Table 4-11. Output Signals (U14) ............................................................................................................................... 4-29
Table 4-12. U1 Outputs ............................................................................................................................................... 4-30
Table 4-13. Write Register Functions.......................................................................................................................... 4-31
Table 4-14. Counter Control Register Write Functions............................................................................................... 4-31
Table 4-15. Relay Control Register Write Functions .................................................................................................. 4-32
Table 4-16. Bargraph Write Address........................................................................................................................... 4-32
Table 4-17. Status Indicator Write Functions .............................................................................................................. 4-33
Table 4-18. Hex Data (Written to Address 4008)........................................................................................................ 4-34
Table 4-19. Control Signal Address Decoding (U34).................................................................................................. 4-35
Table 4-20. Data Entry Read Functions ...................................................................................................................... 4-36
Table 4-21. Function Switch Logic ............................................................................................................................. 4-36
Table 4-22. Sensitivity Select Read Functions ............................................................................................................ 4-37
Table 4-23. Switch Input Bit Assignments (U62) ....................................................................................................... 4-37
Table 6-1.
Electronic Adjustments .............................................................................................................................. 6-1