RIGOL
DS4000E Programming Guide
2-27
Parameter
Name
Type
Range
Default
<n>
Discrete
{1|2}
--
<pol>
Discrete
{POSitive|NEGative}
NEGative
Remarks
NEGative: Use negative logic. High level indicates logic "0"; low level indicates logic "1".
POSitive: Use positive logic. High level indicates logic "1"; low level indicates logic "0".
Return Format
The query returns POS or NEG.
:BUS<n>:RS232:RTHReshold
Syntax
:BUS<n>:RS232:RTHReshold <rthre>
:BUS<n>:RS232:RTHReshold?
Description
Sets or queries the threshold of RX source channel of RS232 decoding on the specified bus.
Parameter
Name
Type
Range
Default
<n>
Discrete
{1|2}
--
<rthre>
Real
(-4 x VerticalScale - Offset) to (4 x VerticalScale - Offset)
Wherein, VerticalScale is the vertical scale of RX source
channel, refer to the :CHANnel<n>:SCALe command;
Offset is the vertical position of RX source channel, refer
to the :CHANnel<n>:OFFSet command.
0
Return Format
The query returns the threshold level in scientific notation.
:BUS<n>:RS232:RX
Syntax
:BUS<n>:RS232:RX <source>
:BUS<n>:RS232:RX?
Description
Sets or queries RX source channel of RS232 decoding on the specified bus.
Parameter
Name
Type
Range
Default
<n>
Discrete
{1|2}
--
<source>
Discrete
{CHANnel1|CHANnel2|CHANnel3|CHANnel4|OFF}
OFF
Remarks
When <source> is set to "OFF", it indicates that no RX source channel will be set.
TX source channel (refer to the :BUS<n>:RS232:TX command) and RX source channel cannot be both
set to "OFF".
Return Format
The query returns CHAN1, CHAN2, CHAN3, CHAN4, or OFF.
Содержание DS4000E Series
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