Tektronix DSA8300, Programmer'S Manual

Page: 97 / 455

Commands Listed in Alphabetical Order
Examples
CH7:DELAY:TIME 15e-12
sets the delay for Channel 7 to 15 ps.
CH3:DELAY:TIME?
might return
CH3:DELAY:TIME 7e-12
indicating that the
delay time for Channel 3 is set to 7 ps.
CH<x>:DELay:UNIts? (Query Only)
This command queries the units for setting the channel delay of the speci fi ed
channel. A returned value containing ‘%’ indicates the delay should only be set
by using the CH<x>:DELay command. A returned value containing ‘ps’ indicates
that the skew value can be set in absolute time by the CH<x>:DELay:TIMe
command (but still can be set in % units by the CH<x>:DELay command).
Group
Vertical
Syntax
CH<x>:DELay:UNIts??
Related Commands CH<x>:DELay:TIMe
CH<x>:DELay
Examples
CH3:DELAY:UNITS?
might return
CH3:DELAY:UNITS "%"
indicating that the
delay unit for Channel 3 is percent.
CH<x>:DESkew
This command sets or queries the deskew time for the channel speci fi ed by x,
which can be 1 through 8. Sending this command is the equivalent to setting
Deskew in the Vertical Setup dialog box for the selected channel.
You can adjust deskew to add or subtract an independent, channel-based
acquisition time delay to the delay from the trigger point (the horizontal position)
that is inherently common to the acquisition of all channels. This allows you
to compensate for delay differences introduced between channels by external
cabling with unequal delays.
NOTE.
Setting different deskew values on dual-channel sampling modules that
use a single sampling strobe (for example, the 80E02, 80E03, 80E04 sampling
modules) reduces overall acquisition performance. In these instances, the
acquisition must digitize each channel on a separate acquisition pass to obtain
each of the signals with the desired time alignment. This multiple pass acquisition
process applies to the acquisition of the channels within each active timebase.
DSA8300 Programmer Manual 2-81