Chapter 2 Command System  RIGOL 
MSO1000Z/DS1000Z Programming Guide  2-13 
:CHANnel<n>:TCAL 
:CHANnel<n>:TCAL <val> 
:CHANnel<n>:TCAL? 
Set or query the delay calibration time of the specified channel to calibrate the zero offset 
of the corresponding channel. The default unit is s. 
<val> can only be set to the specific values in the specified step. If the parameter you 
sent is not one of the specific values, the parameter will be set to the nearest specific 
values automatically. The step varies with the horizontal timebase (set by 
the :TIMebase[:MAIN]:SCALe command), as shown in the table below. 
Step of the Delay Calibration Time 
Note: When the horizontal timebase is equal to or greater than 10μs, the delay 
calibration time cannot be adjusted. 
The query returns the delay calibration time in scientific notation. 
:CHANnel1:TCAL 0.00000002          /*Set the delay calibration time to 20ns*/ 
:CHANnel1:TCAL? /*The query returns 2.000000e-08*/