Agilent Technologies L4400 manual L4437A Example Program Segments

L4437A General Purpose Switch 6

L4437A Example Program Segments

The following sections contain example program segments of commonly used instrument functions.

The channel addressing scheme used in these segments follow the form 1ccc where ccc is the channel number.

For detailed example programs involving multiple drivers and development environments, refer to the L4400 Product Reference CD- ROM (p/n 34989- 13601).

Opening and Closing Channels

Example: Closing and opening channels The first two commands close channel 3, then channel 5. The last command opens both channel 3 and channel 5.

ROUTe:CLOSe (@1003)

ROUTe:CLOSe (@1005)

ROUTe:OPEN (@1003,1005)

Example: Querying channels for open or close state The following command returns a 1 (true) or 0 (false) state of channel 016.

ROUTe:CLOSe (@1016)

ROUTe:CLOSe? (@1016) !Returns a 1

ROUTe:OPEN? (@1016) !Returns a 0

Reading Jumper State and System Identity

Example: Querying the power-failure state of 5 A relays The following command returns the position of the power- fail jumper, either “MAIN” (all relays maintain their present state when power fails) or “OPEN” (all relays open when power fails). If this command is sent to a module other than the L4437A, “NONE” is returned (no error is generated).

SYSTem:MODule:PFAil:JUMPer:AMP5? 1

Example: Querying the system for module identify The following command

returns the identify of the instrument.

SYSTem:CTYPe? 1

Reading Cycle Count and Resetting Modules to Power-On State

Example: Reading the cycle count for a relay The following command returns the relay cycle count on channel 7 and channel 16.

DIAGnostic:RELay:CYCLes? (@1007,1016)

L4400 User’s Guide 131