Viavi 3900 Series, Programming Manual

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Modulation Accuracy and Power Remote Commands
6 - 4
6.3.3 Distribution - Trace Data Query
:DISTribution:TRACe:FETCh?
Description: Command returns Distribution trace data.
Query Data: <statusbyte>,<#pairs>,<x data>,<y data>,<status message>
statusbyte (NR1): 0 = Invalid
1 = Valid
2 = Inaccurate
#pairs (NR1): Number of x,y coordinate pairs to follow
x, y data (NR2): coordinate value
statuts message (ascii):
(when present)
signal not acquired\n
timed out waiting for TraceMutex\n
timed out waiting for data\n
Query Response: :DISTribution:TRACe:FETCh?
1,1,288,-1871.37,0.00,629.98,0.00,-1796.91,0.00,-619.88,0.00,-574.94,0.00,-6
31.87,0.00,-582.26,0.00,586.35,0.00,-1805.57,0.00,-1796.19,0.00,-1803.18,
0.00,-605.25,0.00,-600.47,0.00,599.68,0.00,584.98,0.00,-1794.42,0.00,
-603.39,0.00,-610.97,0.00,-1793.05,0.00,585.14,0.00,-1790.75,0.00,612.04,
0.00,1793.31,0.00,607.42,0.00,1806.40,0.00,1788.95,0.00,-598.09,0.00,
607.93,0.00,592.68,0.00,-590.26,0.00,611.98,0.00,586.29,0.00,617.14,0.00,
593.83,0.00,-598.98,0.00,-605.47,0.00,-1783.44,0.00,585.87,0.00,-1800.64
,0.00,-594.62,0.00,-603.46,0.00,-596.39,0.00,-597.52,0.00,593.43,0.00,
-1803.41,0.00,-1798.85,0.00,-1798.32,0.00,-607.28,0.00,-593.63,0.00,601.10,
0.00,595.16,0.00,-1795.80,0.00,-601.23,.....
Returned data includes Sync, Pilot and Data values.
Distribution Trace must be enabled to return valid data.
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