Teledyne LeCroy BTTracer_Trainer - BTTrainer Users Manual - Manual (Page 288)

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CATC BTT RAINER 2.11 C HAPTER
User’s Manual
ErrorMask 0 - Random error distribution
>0 - Error bit positions
If ErrorType is not zero, this parameter is valid.
It defines error distribution. For uncorrectable
FEC 2/3, random error distribution, several erro-
neous bits will be inserted in every 15-bit packet.
Valid for DM packet types For uncorrectable
FEC 1/3 header, random error distribution, two
error bit will be inserted in every 3-bit packet.
Valid for all packet types with header.
Random jitter between --10 and +10us is added
to the nominal 625 us Slave Rx/Tx timing. The
value is 2's compliment. Example of Jitter values
are: 0 -- 0x00 1 -- 0x01+5 -- 0x05-1 -- 0xFF-5 -
0xFB+10 - 0x0A-10 - 0xF6
Tx Jitter Random jitter between -10 and +10us is added to
the nominal 1250 us Master Tx timing. The value
is 2's compliment. 0.5us is supported. For exam-
ple, 64 wil give a jitter of 0.5us, 70 will give jitter
of 5.5us.
Example of Jitter values are:
0-10 + Jitter 0 to10, w/o 0.5us
64-74+ Jitter 0 to10, w/ 0.5us
-64 to -74- Jitter -1 to -10, w/ 0.5us-
-1 to -10 - Jitter -1 to -10, w/o 0.5us
L_CH Defines pay-
load header
L_CH value
and type of the
payload to be
sent
1
2
3
0 and 4 - 0xFF
Values:
L_CH=2b'01Continuation fragment of an
L2CAP message (Default value)
L_CH=2b'10Start of an L2CAP message or no
fragmentation
L_CH = 2'b11LMP Message
Reserved
Parameter Meaning Default Value Comments