ii
BHK 1/2 RACK 121313
TABLE OF CONTENTS
SECTION
PAGE
3.2.2
Turning the Power Supply On........................................................................................................... 3-4
3.2.3
Error Conditions ................................................................................................................................ 3-5
3.2.4
Setting Local Mode ........................................................................................................................... 3-5
3.2.5
Adjusting LCD Contrast .................................................................................................................... 3-6
3.2.6
Enabling/Disabling Audible Beeps .................................................................................................... 3-6
3.2.7
Enabling/Disabling DC Output Power ............................................................................................... 3-6
3.2.7.1
Disabling DC Output ................................................................................................................... 3-6
3.2.7.2
Disabling DC Output Using Remote On/Off Port ........................................................................ 3-6
3.2.7.3
Remote Shutdown using External Trigger Port........................................................................... 3-7
3.2.7.4
Power Up DC Output Control...................................................................................................... 3-7
3.2.8
Reset Operation................................................................................................................................ 3-7
3.2.8.1
Setting Power-Up & Reset Current ............................................................................................. 3-7
3.2.9
Setting Output Voltage or Current..................................................................................................... 3-8
3.2.10
Setting Overvoltage or Overcurrent Protection ................................................................................. 3-8
3.2.11
Changing Maximum Voltage or Current Value ................................................................................. 3-9
3.2.12
Storing Power Supply Output Settings.............................................................................................. 3-9
3.2.13
Recalling Stored Output Settings...................................................................................................... 3-10
3.2.14
Firmware Version.............................................................................................................................. 3-10
3.2.15
Local Mode Programming of the Power Supply................................................................................ 3-10
3.2.15.1
Creating or Modifying a Program (Program Edit Mode).............................................................. 3-10
3.2.15.1.1
Modifying Programmed Time Interval..................................................................................... 3-12
3.2.15.1.2
Time Interval Accuracy........................................................................................................... 3-12
3.2.15.2
Running a Program ..................................................................................................................... 3-12
3.2.15.3
Stepping Through a Program...................................................................................................... 3-12
3.2.15.4
Cycling a Program....................................................................................................................... 3-13
3.2.15.5
Running a Program Once ........................................................................................................... 3-13
3.2.15.6
Stopping a Running Program...................................................................................................... 3-13
3.2.15.7
Sample Program ......................................................................................................................... 3-13
3.2.16
Calibration......................................................................................................................................... 3-13
3.3
Remote Mode Programming Using SCPI commands via IEEE 488 (GPIB). Bus .................................. 3-14
3.3.1
IEEE 488 (GPIB) Bus Protocol ......................................................................................................... 3-14
3.3.2
DCL Control ...................................................................................................................................... 3-15
3.3.3
Changing the GPIB Address............................................................................................................. 3-16
3.3.4
External Trigger ................................................................................................................................ 3-16
3.3.5
Programming Techniques to Optimize performance ........................................................................ 3-16
3.3.5.1
Programming Voltage/Current Limit and Current/Voltage Limit .................................................. 3-16
3.3.5.2
Making Sure the Previous Command is Complete ..................................................................... 3-17
3.4
BHK-MG VISA Instrument driver ............................................................................................................ 3-18
3.5
RS232-C Operation ................................................................................................................................ 3-19
3.5.1
Setting RS 232 Baud Rate................................................................................................................ 3-19
3.5.2
Serial INterface ................................................................................................................................. 3-19
3.5.3
RS 232 Implementation .................................................................................................................... 3-19
3.5.3.1
Echo Mode .................................................................................................................................. 3-20
3.5.3.2
Prompt Method............................................................................................................................ 3-21
3.5.3.3
XON XOFF Method..................................................................................................................... 3-21
3.5.4
Isolating RS 232 Communication Problems ..................................................................................... 3-21
3.6
Programming Techniques to Optimize performance .............................................................................. 3-22
3.6.1
Example of Proper Programming...................................................................................................... 3-22
3.6.2
Explanation of Programming Techniques ......................................................................................... 3-22
3.7
SCPI Programming................................................................................................................................. 3-22
3.7.1
SCPI Messages ................................................................................................................................ 3-23
3.7.2
Common Commands/Queries .......................................................................................................... 3-23
3.7.3
SCPI Subsystem Command/Query Structure................................................................................... 3-23
3.7.3.1
ABORt Subsystem ...................................................................................................................... 3-23
3.7.3.2
INITiate Subsystem..................................................................................................................... 3-23
3.7.3.3
LIST Subsystem.......................................................................................................................... 3-23
3.7.3.4
MEASure Subsystem .................................................................................................................. 3-23
3.7.3.5
OUTPut Subsystem .................................................................................................................... 3-23
