Xantrex Watt Series Programmable DC Power Supply XG 850 Operating Manual page 185

Example 3:
:SYST:HELP:SYNT? ':VOLT'
Gets the response:
M370078-01
Set Voltage Setpoint (Immediate)
[[:]SOURce]:VOLTage[:LEVel][:IMMediate][:AMPLitude]
?|<NR2>|MAXimum|MINimum
Aliases:
SCPI Error/Event Queue
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