To Set Up Sync Search (Qam Only) - Agilent Technologies 89410A Operator's Manual

(Opt. AYH)

To set up sync search (QAM only)

In this task you learn how to synchronize your measurement by using a
specific bit pattern within the chain of bits. You learn how to define sync
words and set an offset. Sync search operates the same for both digital
and video demodulation. This example uses the 32 DVB QAM signal
created in ''To prepare a QAM or DVB QAM measurement''. Note that you
cannot use sync search with VSB measurements.
1.
Select two displays and format them:
Press [ ], [
A Data Format
Press [ ], [
Display 2 grids
Press [ ].
D
2.
Select the search length for this particular signal:
Press [ ], [
search length
Time
3.
Enter a sync bit pattern:
Press [ ], [
sync setup pattern
4.
Select an offset:
Press [ ], 6, [
offset sym
5.
Turn on sync search:
Press [ ], [
Return sync search on
The search length must be longer than the combination of result length,
sync pattern, and offset. The sync pattern may include up to 32 symbols.
The offset may be positive or negative. See the online help topics for
more information on these keys.
The sync word is highlighted when sync search is completed successfully
], [magnitude ].
log(dB)
]
], 1000, [ ].
sym
], [ ], 00101, [
clear entry
].
]
Using Video Demodulation
].
enter
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