User manual
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4.2  Parameter Definition 
The PVS power supply supports communication protocols, which 
include standard SCPI commands and a few proprietary commands that 
follow the SCPI convention. The SCPI interface enables users to operate 
the power supply through a computer or a terminal equipped with IEEE-
488.2 GPIB, RS-232, or USB interface. SCPI IEEE-488.2 also supports 
multi-unit control allowing a user to control up to 30 power supplies. 
The following table lists all of the numerical parameters. 
Symbol 
Response Formats 
<bool> 
Boolean value, can be 1 or “ON”, 0 or “OFF” 
<NR1> 
Integer value, can be zero, positive or negative 
integer number 
<NRf> 
Flexible numerical value, can be zero, positive or 
negative float point numeric value 
<string> 
String value, characters enclosed in single or double 
quotes 
<NL> 
New line, hex code 0x0Ah 
<Rtn> 
Return, hex code 0x0Dh 
All commands should be ended with the <Rtn> and <NL> and there 
should be a space between command and numerical parameter. 
4.3  Error/Event List 
SCPI interface can offer an error/event list that contains up to 10 
errors/events. Users can read the errors/events through the 
“SYStem:ERRor?” query command in a first-in first-out manner. Once an 
error/event is read, the read process will clear it from the memory. To 










