3-32
BOP-1K-GL 111315
3.6.3.1.2 CONFIGURE DEVICE CLEAR (DCL) CONTROL
The device clear (DCL) and selected device clear can be set to operate in two modes. In the
MATE mode (DCL1), when the device clear is received, the output of the power supply is set to
zero volts. In the SCPI mode (DCL0) sending DCL or selected DCL has no effect on output volt-
age and current as required by IEEE specification 488.2. The factory default value is SCPI
mode (DCL0) (see PAR. B.144).
3.6.3.1.3 DETERMINING WHETHER *RST COMMAND SETS THE OUTPUT OFF OR ON
Refer to PAR. B.144 (RO0 or RO1) to configure how the unit responds to the *RST (reset) com-
mand. See PAR. 3.5.8 to understand how the unit behaves when output is off (disabled) or on
(enabled) with different load types.
3.6.4
RS232-C OPERATION
The BOP may be operated via an RS232-C terminal, or from a PC using a terminal emulation
program. The default settings are as follows:
•
Baud rate:
OFF
•
Parity:
None
•
Data Bits
8
•
Stop Bits
1
•
Prompt
DISABLE
•
XON/XOFF
ENABLE
To configure baud rate, prompt, echo or XON/XOFF, refer to PAR. 3.6.4.3. Behavior of the serial
interface is described in PAR. 3.6.4.1 and RS 232 Implementation is described in PAR. 3.6.4.2.
3.6.4.1
SERIAL INTERFACE
The serial interface behaves like the GPIB interface in that the command is parsed after receiv-
ing a control character of either a Line Feed or Carriage Return. The serial interface supports six
special control characters. The six special control characters are:
Escape (1B
H
)
Causes the input buffer to be cleared. This character is used to ensure
that the buffer is empty when the host powers on since it is possible
that the unit was previously powered on and received some characters
prior to the initialization of the host computer.
Backspace (08
H
)
Causes the last character in the input buffer to be removed from the
input buffer queue.
Carriage Return (0D
H
)
Causes the input buffer to be parsed by the BOP.
Line Feed (0A
H
)
Causes the input buffer to be parsed by the BOP.
3.6.4.2
RS 232 IMPLEMENTATION
The following paragraphs are provided to help the user understand how the RS 232 serial inter-
face is implemented in the BOP. Since the RS 232 protocol does not use a parity bit, the
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