1-12 BOP HIPWR 1113151.4 LOCAL CONTROLEither the front panel keypad or the adjust control can set and adjust output voltage and currentunder local control. The display provides a digital display of output voltage and current as wellas a pictorial display of real-time analog voltage and current meters.The keypad includes five function keys which provide access to the menu-driven functions ofthe unit. The menu screens provide access to save the unit’s settings, recall previously savedsettings, configure or execute a waveform, display references or configure the unit by settingGPIB address, Serial protocols, maximum acceptable voltage and current, etc. (see PAR. 3.3for details on local control).Context-sensitive help screens are available by pressing the HELP key. Actual output voltageand current displays are available while the help screens are displayed.1.5 REMOTE CONTROLThe BOP Power Supply can be remotely controlled directly via either the IEEE 488.2 (GPIB)bus (see PARs. 3.5 and 3.5.4) or RS232C (see PAR.3.5.6) interface using SCPI commands(see and Appendix A and B). Most features available in local mode can also be accessedremotely via the digital interface. The unit can be controlled with a VISA (Virtual InstrumentationSoftware Architecture) driver to facilitate remote programming of the BOP Power Supply (seePAR. 3.5.5). The VISA driver is an interface written in standard C language which adds theproper SCPI syntax to commands sent to the BOP.Programmed settings for main and protection channels are not displayed on the front panelwhen in remote mode; these settings can be displayed if needed by setting Remote Debug toON (see PAR 3.2.5.2), however this slows power supply response.The BITBUS is used to allow communication between identical BOP units that are connected inseries and/or parallel to expand the voltage or current range (see PAR. 2.8).The BOP can also be controlled remotely using analog signal applied to the Analog I/O Port(see PAR. 3.4 for details.)
