AT4039EML
|
User Manual
16
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P a g e
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O
MMU
N
IC
A
T
IO
N
T
E
ST
&
ME
A
SU
R
EME
N
T
SO
LU
TI
O
N
S
mapping is enabled, the PRBS13 and
PRBS31 under the pattern select menu
turn into PRBS13Q and PRBS31Q
respectively. Gray mapping basically
re-arranges the symbol mapping to the
following:
00
0
01
1
11
2
10
3
Per-Channel Settings
You can adjust these settings on a per channel basis. These are:
The AT4039EML
can
output a wide range of
pre-defined patterns. In
addition to the PRBS
patterns,
there
are
linearity and jitter test
patterns. Also, on top of
the pre-defined patterns
the
user
has
the
possibility of defining
his/her own pattern –
more on this further
below.
Note: error detection
only works on the PRBS
patterns existing in the
RX pattern drop down
list. It isn’t possible to do
