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Command List
This section lists all commands and queries implemented in this family of instruments. To maintain
command compatibility within the XEL family and also with the XDL programmable power supplies,
output-specific commands always require the number of the output to be included in the command,
even though these instruments only have a single output, e.g. V1 120 to set the output to 120Volts.
The few commands applicable to dual output instruments in the XEL family are listed for
completeness but will be ignored in this instrument.
Note that there are no dependent parameters, coupled parameters, overlapping commands,
expression program data elements or compound command program headers; each command is
completely executed before the next command is started. All commands are sequential and the
operation complete message is generated immediately after execution in all cases.
The following nomenclature is used:
<rmt>
<RESPONSE MESSAGE TERMINATOR>
<nrf>
A number in any format. e.g. 12, 12·00, 1·2 e1 and 120 e-1 are all accepted as the
number 12. Any number, when received, is converted to the required precision
consistent with the use then rounded to obtain the value of the command.
<nr1>
A number with no fractional part, i.e. an integer.
<nr2>
A number in fixed point format e.g. 11·52, 0·78 etc.
<n>
The number of the output (1 or 2) or associated status register to which the
command relates. On dual output supplies, '1' is the Master (right-hand output) and
'2' is the Slave (left-hand output). On single output supplies <n> is always 1.
The commands which begin with a
commands. All will function when used on the other interfaces but some may be of little use.
Instrument Specific Commands
For commands specified as 'WITH VERIFY' the operation is completed when the parameter being
adjusted reaches the required value to within ±5% or ±10 counts, whichever is the greater. If the
value fails to settle within these limits within 5 seconds then the Verify Timeout bit (bit 3) is set in the
Standard Event Status Register and the operation is completed at the end of the timeout period.
The Operation Complete bit (bit 0) in the Standard Event Status Register is only ever set by the
*OPC command. The *OPC (or the *OPC?) command can be used for device synchronization due
to the sequential nature of remote operations.
V<n> <nrf>
V<n>V <nrf>
OVP<n> <nrf>
I<n> <nrf>
OCP<n> <nrf>
V<n>?
I<n>?
OVP<n>?
OCP<n>?
*
are implemented as specified by IEEE Std 488.2 as Common
Set output <n> to <nrf> Volts
Set output <n> to <nrf> Volts with verify
Set output <n> over voltage protection trip point to <nrf> Volts
Set output <n> current limit to <nrf> Amps
Set output <n> over current protection trip point to <nrf> Amps
Returns the set voltage of output <n>
The response is V <n> <nr2><rmt> where <nr2> is in Volts
Returns the set current limit of output <n>
The response is I <n> <nr2><rmt> where <nr2> is in Amps
Returns the voltage trip setting for output <n>
The response is VP<n> <nr2><rmt> where <nr2> is in Volts
Returns the current trip setting for output <n>
The response is CP<n> <nr2><rmt> where <nr2> is in Amps
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