I had a terrible time trying to find the command list / programming manual for the Rotek 8000. I eventually managed to pull the information from some old LabVIEW VIs at work. I’m sharing them here in case someone finds themselves in the same predicament down the road.

• Output State
  • OUTP? → Query output ON/OFF state
  • OUTP ON / OUTP OFF → Turn outputs ON or OFF
• Current
  • CURR1 1.23 → Set current on channel 1 to 1.23 A
  • CURR1? → Query current setting for channel 1
• Current Phase
  • CURR1:PHAS 1.0 → Set phase offset for current on channel 1
  • CURR1:PHAS? → Query current phase setting
• Voltage
  • VOLT1 120 → Set voltage on channel 1 to 120 V
  • VOLT1? → Query voltage setting for channel 1
• Voltage Phase
  • VOLT1:PHAS 0.0 → Set phase angle for voltage on channel 1
  • VOLT1:PHAS? → Query voltage phase setting
• Frequency
  • FREQ 60 → Set system frequency to 60 Hz
  • FREQ? → Query system frequency
• Output Terminals
  • ROUT1:TERM FRONT → Route channel 1 output to front terminals
  • ROUT1:TERM REAR → Route channel 1 output to rear terminals
  • ROUT1:TERM? → Query active terminal set for channel 1

Note – This list is not official and may be incomplete. I excluded the generic SCPI commands (IDN, RST, etc.) and only included the Rotek-specific ones I was able to confirm. If you discover additional commands or different behaviors, please share — it would be great to build a more complete reference for this instrument. Maybe someone has the original programming manual...?