Thermo Scientific SAM12, Manual

Page: 13 / 176

Issue: 1.0 Contents
Thermo Fisher Scientific SAM12 User Manual xi
PL25 40 pin Primary IDE port for 3.5” disks .....................................................................7-2
PL4 40 pin Secondary IDE port for CD Roms ...................................................................7-2
IC9 Programmable I/O Device ...........................................................................................7-2
IC6 and IC8 Buffer .............................................................................................................7-2
IC1 Sound Amplifier ..........................................................................................................7-2
IC2 & IC3 USB power controllers......................................................................................7-3
IC5 LCD Power and Control ..............................................................................................7-3
IC4 EEPROM .....................................................................................................................7-3
Display facilities .................................................................................................................7-3
Inputs ..................................................................................................................................7-3
Outputs................................................................................................................................7-3
Battery Controller Board Type 5660A.......................................................................................7-3
Introduction ........................................................................................................................7-3
Keyswitch operation ...........................................................................................................7-4
FHT681 42543-0223 & 42543-0224.............................................................................................7-4
Scintillation HV & Amplifier .............................................................................................7-4
HV & Amplifier Connections.............................................................................................7-5
Coincidence detector ..........................................................................................................7-5
Coincidence Detector connections......................................................................................7-6
Mains Power Supply Module ......................................................................................................7-6
LCD Display and Controller I/F & Backlight Inverter Module ..............................................7-6
General Electromagnetic Compatibility (EMD) Considerations .............................................7-7
Chapter 8 Routine Checks..................................................................................... 8-1
Mechanical Checks ......................................................................................................................8-1
Door Locking Mechanism (if fitted)...................................................................................8-1
SAM12 Mounting Arrangement.........................................................................................8-1
Other Mechanical Checks...................................................................................................8-1
Electrical Checks..........................................................................................................................8-2
Battery Charge state............................................................................................................8-2
Display Checks ...................................................................................................................8-2
EMC & Safety Earthing Checks.........................................................................................8-2
Periodic Source Checks ...............................................................................................................8-2
Regular Source checks.................................................................................................................8-3
Cleaning Instructions...................................................................................................................8-3
Chapter 9 Setting Up Procedure ........................................................................... 9-1
Initial Setting Up for Use.............................................................................................................9-1
General................................................................................................................................9-1
Initialisation ........................................................................................................................9-1
Setting Passwords ...............................................................................................................9-1
Setting the Operational Parameters.....................................................................................9-2
Selection of Detector Operating Parameters .............................................................................9-3
Detector HV Selection........................................................................................................9-3
Derivation of the Optimum Operating Voltage ..................................................................9-4
Variance Testing ..........................................................................................................................9-7
Setting the NBR parameters ...............................................................................................9-8
Chapter 10 Calibration Procedure ........................................................................ 10-1
Calibration Validity ...................................................................................................................10-1
Equipment Required..................................................................................................................10-1
Preparation for Calibration ......................................................................................................10-2
Calibration..................................................................................................................................10-2
Calibration for Other Nuclides .................................................................................................10-3
Calibration mixes..............................................................................................................10-4
Troubleshooting .........................................................................................................................10-4
If Background Values Vary by More Than 30% ..............................................................10-4
If Nuclide Count-Rate Outside Required Value ...............................................................10-4