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1.4
LOCAL CONTROL
Either the front panel keypad or the adjust control can set and adjust output voltage and current
under local control. The display provides a digital display of output voltage and current as well
as 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 of
the unit. The menu screens provide access to save the unit's settings, recall previously saved
settings, configure or execute a waveform, display references or configure the unit by setting
GPIB address, Serial protocols, maximum acceptable voltage and current, etc. (see PAR. 3.3
for details on local control).
Context-sensitive help screens are available by pressing the HELP key. Actual output voltage
and current displays are available while the help screens are displayed.
1.5
REMOTE CONTROL
The 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 accessed
remotely via the digital interface. The unit can be controlled with a VISA (Virtual Instrumentation
Software Architecture) driver to facilitate remote programming of the BOP Power Supply (see
PAR. 3.5.5). The VISA driver is an interface written in standard C language which adds the
proper SCPI syntax to commands sent to the BOP.
Programmed settings for main and protection channels are not displayed on the front panel
when in remote mode; these settings can be displayed if needed by setting Remote Debug to
ON (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 in
series 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.)
1.6
FEATURES
1.6.1
DIGITAL CALIBRATION
The BOP Power Supply contains no internal adjustments. Calibration is done entirely via the
keypad (or remotely via the GPIB or RS 232 interface) using digital entries and a calibrated
DVM, a precision d-c reference voltage source and precision shunt resistor. Calibration instruc-
tions appear on the front panel after a password is entered; previous calibration values are
saved and can be restored using the remote interface if desired. The original factory calibration
values can also be restored using the remote interface. (Refer to Section 4.)
1.6.2
VOLTAGE/CURRENT PROTECTION
Positive and negative voltage and current protection values can be individually programmed.
Refer to PAR. 3.3.3.
BOP HIPWR 080709
1-13
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