LeCroy WaveMaster 8600A User Manual

432 WM-OM-E Rev I
keyword:
STATE
arguments:
<which state> 0 to STATES minus 1
<previous state from 0> 0 to STATES minus 1 (or 100, see below)
<expected sample level from 0> -1 to 1
<previous state from 1> 0 to STATES minus 1 (or 100, see below)
<expected sample level from 1> -1 to 1
required?:
yes
Notes:
1. The states are specified in NRZ (nonreturn to zero) format, that is 0 and 1 are the two polarities of
magnetization. On the head signal (the first sample of) a negative going pulse begins a "0" polarity
region on the media, and a positive going pulse begins a "1" polarity region. "from 0" means the bit
cell which is no longer part of the state was 0 polarity. Consider the state 0011. If the preceding state
was 0001 then the state 0011 was arrived at along the "from 0" transition. Similarly if the preceding
state was 1001 then the state 0011 was arrived at along the "from 1" transition.
2. At least one STATE specification must be seen or the parse is considered failed.
3. In some cases one (or both) of the transitions to a state may not be valid, that is, they are
disallowed due to encoding constraints. In such a case use the value 100 as the "previous state from"
for that transition, this is recognized as disallowing the transition. Any other value outside of 0 to
STATES minus one is declared a parse error. If both transitions to a state are disallowed, the state
cannot be arrived at; it is invalid. You need not specify invalid states (states that cannot be arrived at).
For proper operation you must specify every state that can be arrived at.
4. The STATES keyword, specifying the number of states, must be seen before a STATE can be
specified.
possible error
messages:
"Must set #states before STATE info!" - see note 4 above.
"State <number>?? Expected states 0 to <STATES - 1>!"
"State <number>: must be -1 < expected level < 1!"
keyword:
STATES
arguments:
<number from 4 to 16>
required?:
yes
Note:
STATES must appear before a STATE is specified
possible error
messages:
"#states must be >= 4 and <= 16!"

LeCroy WaveMaster 8600A Specifications

General

Brand	LeCroy
Model	WaveMaster 8600A
Category	Test Equipment
Language	English