Tektronix DSA8300, Programmer'S Manual

Page: 337 / 455

Commands Listed in Alphabetical Order
TRIGGER:CH2:CLKREC:RANGE?
might return
NONE
, indicating that continuous
clock recovery is not supported by the sampling module for Channel 2; therefore,
no custom user rate can be de
fi ned for Channel 2.
TRIGger:CH<x>:CLKRec:USEr (No Query Form)
This command de fi nes the User (custom) clock rate (<nr3>) for the channel
speci fi ed (CH<x>), which can be 1 through 4. (The available choices are
dependent on the optical sampling module that is installed.) The channel
speci
fi ed must be from an optical sampling module that provides continuous
clock-recovery capability. The clock rate de fi ned must be in the range available
for the channel/module chosen.
The query form returns the user-de fi ned rate in effect. The default rate is the
minimum value of the adjustable range.
Group Trigger
Syntax
TRIGger:CH<x>:CLKRec:USEr <nr3>
Related Commands TRIGger:CH<x>:CLKRec:RANge?
SYSTem:PROPerties:CH<x>:CLKUser?
SYSTem:PROPerties:CH<x>:CLKRec?
Examples
TRIGGER:CH1:CLKREC:USER 10.52E9
de fi nes the user-speci fi ed clock
recovery rate as 10.52 Gb/s.
TRIGGER:CH1:CLKREC:USER?
might return
9.8E9
, indicating the current
user-de fi ned rate is 9.8 Gb/s.
TRIGger:CH<x>:CLKRec:VALue
This command sets or queries the clock recovery value that is applied to the
channel speci
fi ed by x, which can be 1 through 4. The clock-recovery selections
require hardware support that may not be provided by your sampling module; see
your module user manual to determine which clock-recovery selections your
module supports. You can also use the SYStem:PROPerties:CH<x>:CLKRec?
query to determine clock recovery options available for the speci
fi ed channel.
If you select a clock recovery setting that your sampling module does not support,
you will receive Execution Error code 220 with error message "Parameter Error."
(See Messages for general information on programming interface messages.)
DSA8300 Programmer Manual 2-321