User manual

Chapter 2 Command System RIGOL
MSO7000/DS7000 Programming Guide 2-83
:LA:TCALibrate
Syntax
:LA:TCALibrate <tcal>
:LA:TCALibrate?
Description
Sets or queries the delay calibration time of the digital channel. The default unit is s.
Parameter
Name
Type
Range
Default
<tcal>
Real
-1000 ns to 100 ns
0.00 s
Remarks
When you use an oscilloscope to make actual measurements, the transmission delay
of the probe cable may bring relatively greater errors (zero offset). Zero offset is
defined as the offset of the crossing point (between the waveforms and the threshold
level) from the trigger position. You can set a delay time for calibrating the zero offset
of the corresponding channel.
Return
Format
The query returns the delay calibration time in scientific notation.
Example
:LA:TCALibrate 0.00000002 /*Sets the delay calibration time to 20 ns.*/
:LA:TCALibrate? /*The query returns 2.000000E-8.*/
:LA:GROup<n>:APPend
Syntax
:LA:GROup:APPend
<group>,<digital0>[,<digital1>[,<digital2>[,<digita3>[,<digital4>[,<digital5>[,<di
gital6>[,<digital7>[,<digital8>[,<digital9>[,<digital10>[,<digital11>[,<digital12>[,
<digital13>[,<digital14>[,<digital15>]]]]]]]]]]]]]]]
Description
Adds a channel to the specified user-defined group.
Parameter
Name
Type
Range
Default
<group>
Discrete
{GROup1|GROup2|
GROup3|GROup4}
——
<digital0>/<digital1>/
<digital2>/<digita3>/
<digital4>/<digital5>/
<digital6>/<digital7>/
<digital8>/<digital9>/
<digital10>/<digital11>/
<digital12>/<digital13>/
<digital14>/<digital15>]
Discrete
{D0|D1|D2|D3|D4|
D5|D6|D7|D8|D9|D
10|D11|D12|D13|D
14|D15}
——
Example
:LA:GROup:APPend GROup2,D0,D1 /*Adds D0 and D1 to Group2.*/