Rigol DS1204B Programming Manual page 25

Function:
The command increases the vertical position of channel 2 evenly.
44. :KEY:CH2_POS_DEC
Command Format:
:KEY:CH2_POS_DEC
Function:
The command decreases the vertical position of channel 2 evenly.
45. :KEY:CH2_POS_Z
Command Format:
:KEY:CH2_POS_Z
Function:
The command adjusts the vertical offset of channel 2 to zero.
46. :KEY:CH3_VOLT_INC
Command Format:
:KEY:CH3_VOLT_INC
Function:
The command decreases the vertical scale of channel 3.
47. :KEY:CH3_VOLT_DEC
Command Format:
:KEY:CH3_VOLT_DEC
Function:
The command increases the vertical scale of channel 3.
48. :KEY:CH3_VOLT_Z
Command Format:
:KEY:CH3_VOLT_Z
Programming Guide for DS1000B Series
RIGOL
2-17