RIGOL DG1000Z Series - Manual (Page 169)

Chapter 2 Command System RIGOL
DG1000Z Programming Guide 2-157
[:SOURce[<n>]]:PULSe:TRANsition:TRAiling
Syntax [:SOURce[<n>]]:PULSe:TRANsition:TRAiling {<seconds>|MINimum|MAXimum}
[:SOURce[<n>]]:PULSe:TRANsition:TRAiling? [MINimum|MAXimum]
Description Set the pulse fall time of the specified channel.
Query the pulse fall time of the specified channel.
Parameter Name Type Range Default
[<n>] Discrete 1|2 1
<seconds> Real 10ns to 0.625×pulse width 20ns
Explanation  The fall time is defined as the time required for the pulse amplitude to fall from
90％ to 10％.
 When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related
parameters of CH1 by default.
 The range of the fall time is limited by the current waveform frequency and pulse
width. When the specified value exceeds the limits, the instrument will adjust the
edge time automatically to make it match the specified pulse width.
Return Format The query returns the pulse fall time in scientific notation with 7 effective digits, for
example, 3.500000E-08 (the pulse fall time is 35ns).
Example :SOUR1:PULS:TRAN:TRA 0.000000035 /*Set the pulse fall time of CH1 to 35ns*/
:SOUR1:PULS:TRAN:TRA? /*Query the pulse rise time of CH1 and
the query returns 3.500000E-08*/