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Common Commands (IEEE 488.2)

These commands are available on all device variants.

*IDN?

Query instrument identification.

Response:

Nine Fives,<controller_type>,<serial>,<version>

Where <controller_type> is Switch_Controller or Attenuator_Controller.

Example:

*IDN?
Nine Fives,Switch_Controller,0001,1.0.0

*RST

Reset instrument to default state.

  • Programmable SPDT Switch: Sets switch to RF1 (GPIO low — preserving the pre-rename physical effect)
  • Programmable SP4T Switch: Sets switch to RF0 (both select lines low — the power-on route)
  • Programmable Attenuator: Sets attenuation to 0 dB

Reset state is asymmetric between switch variants

SPDT resets to RF1 while SP4T resets to RF0. The SPDT reset preserves the physical GPIO-low behaviour the hardware has always had; on SP4T both select lines low is the RF0 route, so that is the reset state.

Example:

*RST

*CLS

Clear status and error queue.

Example:

*CLS