LeCroy WavePro 7300A - Page 432

430 WM-OM-E Rev I
keyword:
MAX_LEVEL_ADJ
arguments:
<value from 0.0 to 1.0>
required?:
no
Notes:
This sets a hard limit on the maximum change in an expected level due to steering from one sample.
Setting this value to 1.0, or near that value, makes the limit irrelevant. The DDA uses 0.0625 for PR4,
0.03125 for EPR4, and 0.020833 for E2PR4. If this keyword is not seen, its value remains
unchanged. If this value is never set, the default is 0.020833.
possible error
messages:
"MAX_LEVEL_ADJ must be >= 0 and <= 1.0"
keyword:
MAX_PHASE_ADJ
arguments:
<value 0 to 0.1>
required?:
no
Notes:
This sets a hard limit on the maximum phase change (and the maximum period change) of the
emulated PLL due to steering from one sample. The value is a fraction of a bit cell time. The DDA
uses 0.06 for PR4 and EPR4, and 0.04 for E2PR4. If this keyword is not seen, its value remains
unchanged. If this value is never set, the default is 0.04.
possible error
messages:
"MAX_PHASE_ADJ must be >=0 and <=0.1 (bit cells)"
keyword:
NORMALIZED_LEVELS
arguments:
(see note below)
required?:
no
Notes:
1. This keyword takes LEVELS arguments, each a value from -1 to 1, in order.
2. If this keyword is not supplied, levels default to LEVELS: equally spaced values from -1 to 1.
3. LEVELS must be seen before this keyword.
possible error
messages:
"Must set #levels before specifying levels!"
"Must set TOP_LEVEL... before specifying levels!"
"Normalized levels must be in order, -1 to 1!"
"Normalized levels must be -1 to 1!"- arguments didn't include -1 or 1, or both