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Support   XID    Commands Reference    Analog Commands

Commands on this page can be used only with the “Analog c-pod” and “Analog m-pod” products. They were introduced in firmware version 2.2.8.

A proper description of the analog output mode can be found on this Analog m-pod support page.

The Analog Commands

vr + start voltage + end voltage    Set Voltage Range

The start voltage is always 0. The end voltage can be between 1 and 10V. The default is 1 volt.

Equivalent XID inquiry command

Inquiry Command: send bytes ‘_vr’. The device returns _vr followed by the start and end voltage values.

vm + mode    Set Analog Output Mode

Instructs the analog device on how to produce the voltage levels. 

  • A value of 1 sets “Fixed Delta” mode, with the delta being the voltage range divided the number of levels (8 or 16). The output is determined by the highest bit set; any lower bits are ignored.
  • A value of 2 sets “Binary” mode, resulting in up to 255 different voltage levels.

The default is Fixed Delta. See this Analog m-pod support page for more details. 

Equivalent XID inquiry command

Inquiry Command: send bytes ‘_vm’. The device returns _vm followed by the mode.

vt + start volt. + end volt.    Set Voltage Range for Testing

This command is identical to the vr command except that the voltage range is not saved to flash memory. It is intended for in-house QC use. 

Equivalent XID inquiry command

Inquiry Command: send bytes ‘_vt’. The device returns _vt followed by the start and end voltage values.

vl + number of levels    Set Number of Output Levels

Sets the number of different voltage levels that will be generated if analog output mode is Fixed Delta. This can be 8 or 16. The default is 8 levels. This command is ignored if analog output mode is Binary.

See this Analog m-pod support page for more details.

Equivalent XID inquiry command

Inquiry Command: send bytes ‘_vl’. The device returns _vl followed by the number of levels.

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Last revision: Dec 8, 2022

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