Lakeshore 620 - Page 4

Lake Shore Model 620/622/623/647 Magnet Power Supply User’s Manual
ii Table of Contents
TABLE OF CONTENTS (Continued)
Chapter/Paragraph Title Page
3.3 Normal Display for Manual Mode ........................................................................................... 3-2
3.4 Normal Display for Manual PSH Control ................................................................................ 3-3
3.5 Normal Display for Automatic PSH Control............................................................................ 3-3
3.6 Function Menus...................................................................................................................... 3-5
3.6.1 Function Menu 1 ................................................................................................................. 3-5
3.6.1.1 Automatic Mode / Manual Mode ...................................................................................... 3-5
3.6.1.2 Interface Setup Screen .................................................................................................... 3-5
3.6.1.3 Step Limit/Zero Screen .................................................................................................... 3-6
3.6.1.4 Instrument Setup Screen .................................................................................................3-6
3.6.2 Function Menu 2 ................................................................................................................. 3-7
3.6.2.1 Outputs Only Screen........................................................................................................ 3-8
3.6.2.2 LHe Level......................................................................................................................... 3-8
3.6.2.3 Field ................................................................................................................................. 3-8
3.6.2.4 PSH Setup ....................................................................................................................... 3-8
3.6.3 Function Menu 3 ................................................................................................................. 3-8
3.6.3.1 Delays Setup Screen ....................................................................................................... 3-8
3.6.3.2 Delays Setup Screen with Dithering ................................................................................ 3-9
3.7 Manual Persistence Control Example .................................................................................... 3-9
3.8 Automatic Persistence Control Example................................................................................ 3-9
3.9 Dithering in Automatic Mode ................................................................................................ 3-11
4 REMOTE OPERATION.......................................................................................................................... 4-1
4.0 General................................................................................................................................... 4-1
4.1 IEEE-488 Interface ................................................................................................................. 4-1
4.1.1 IEEE-488 Interface Settings................................................................................................ 4-1
4.1.2 IEEE-488 Command Structure ........................................................................................... 4-2
4.1.2.1 Bus Control Commands................................................................................................... 4-2
4.1.2.2 Common Commands....................................................................................................... 4-2
4.1.2.3 Interface and Device Specific Commands....................................................................... 4-2
4.1.3 Status Registers.................................................................................................................. 4-2
4.1.3.1 Status Byte and Service Request Enable Registers........................................................ 4-3
4.1.3.2 Standard Event and Standard Event Status Registers .................................................... 4-3
4.1.4 Example IEEE Setup and Program..................................................................................... 4-4
4.1.4.1 GPIB Board Installation.................................................................................................... 4-4
4.1.4.2 Run the Example QuickBasic Program ........................................................................... 4-4
4.1.5 Notes On Using the IEEE Interface .................................................................................... 4-5
4.2 Serial I/O Interface ................................................................................................................. 4-7
4.2.1 Serial Interface Hardware Configuration ............................................................................. 4-8
4.2.2 Serial Interface Settings ...................................................................................................... 4-8
4.2.3 Sample BASIC Serial Interface Program ............................................................................ 4-8
4.2.4 Notes on Using the Serial Interface .................................................................................... 4-9
4.3 Summary of IEEE-488/Serial Interface Commands............................................................. 4-10
4.3.1 Operational Commands Description ................................................................................. 4-11
4.3.2 Interface Commands Description ..................................................................................... 4-13
4.3.3 Ramping Commands Description ..................................................................................... 4-14
4.3.4 Current Zero Commands Description ............................................................................... 4-15
4.3.5 Current Step Limit Commands Description ...................................................................... 4-16
4.3.6 Computed Field Commands Description .......................................................................... 4-17
4.3.7 Common Commands Description..................................................................................... 4-18