Tektronix DSA8200 Series User Manual

Commands Listed in Alphabetical Order
Syntax
PHAseref:CH<x
>:FREQuency <NR3>
PHAseref:CH<x>:FREQuency?
Related Commands
P
HAseref:CHAR, PHAseref:MODe, PHAseref:SOUrce, PHAseref:CH<x>:
RANge?, PHAseref:CH<x>:STAtus?
Arguments
<NR3> specifies the phase reference clock to the instrument. Set the value that
matches the clock that you have connected to the Phase Reference Module.
Values you specify that mismatch the input clock frequency by 10% or more are
likelytoresultinanerrorduringcharacterization...
The instrument accepts an allowed range for < NR3> from 2E+09 to 25E+09 for
the 82A04 or from 2E+09 to 110E+09 for the 82A04-60G. Values outside the
allowed range are coerced to the minimum or maximum of the range.
NOTE. The guaranteed operation range is from 8E+09 to 25E+09 for the 82A04
and from 8E+09 to 60E+09 for the 82A04-60G. D epending on clock-signal
quality, connecting clocks that are below or above the guaranteed operation
range for the module, but within its allowed range, may or may not result in
phase-correction operation. In any case, such operation is not warranted by
Tektronix.
Options F1 and F2. These options are exceptions to the preceding note. Options
F1 and F2 provide filters and cabling that, when used to connect the phase
reference clock, guarantee operation at certain frequencies below 8 GHz, the
normal minimum limit that's guaranteed. If you've connected these options,
enter a <NR3> argument t hat matches the lower clock frequency that you have
connected. See your DSA8200 Specifications and Performance Verification
Manual for more information on the 82A04 module specifications.
Examples
PHASEREF:CH2:FREQUENCY 43.01841400000E+9 sets the phase reference
clock frequency to match a 43.018414 GHz clock connected to the 82A04-60G
Phase Reference Module installed in the C1C 2 small module compartment.
This same command will result in a coerced clock frequency of 25 GHz for
82A04 modules that are not equipped with Option 60G. With the connected
clockat45GHz,turningphasecorrectiononandperformingacharacterization
results in an error, since the coerced setting mismatches the connected clock
by more than 10%.
PHAseref:CH<x>:RANge? (Query Only)
This command q ueries and returns the guaranteed frequency range of the Phase
Reference Module corresponding to CH<x>, where <x> is a channel associated
DSA/CSA/TDS8X00/B Series Programmer Manual 2-263

Tektronix DSA8200 Series Specifications

General

Brand	Tektronix
Model	DSA8200 Series
Category	Test Equipment
Language	English