CiDRA Passive Sonar Transmitters - Manual (Page 42)

Table 5 Modbus Holding Registers (continued)
Address Size Type Value Description Values
4541 2 Long SOS_SUB_ARRAYS SOS Sub Array Size
4543 2 Long
SOS_NORMALIZE_
FLAG 0 = NO normalization in the frequency domain. 1 =
normalization in the frequency domain.
4545 2 Long
SOS_DIFFERENCIN
G_FLAG
0 = NO differencing in the frequency domain. 1 = 1st
order differencing in the frequency domain. 2 = 2nd
order differencing in the frequency domain.
4547 2 Long
SOS_OP_MODE_S
ETTINGS
Determines which ridge to use for SOS calculation. Also
determines which SOS parameter to leave fixed or
calculate and whether or not to use Linear/Log KW diff.
0 = Use right and left ridge
averaged, 1 = Use right ridge only,
2 = Use left ridge only, 4 = Enable
SOS auto frequency calculation, 8
= Enable SOS power weighting to
auto-frequency calculation, 16 =
Linear KW diff enable, 32 = Log
KW diff enable.
4549 2 Long SOS_SELECT_NUM SOS Selection Threshold.
4551 2 Long
SOS_MIN_FREQ_P
TS
This value selects the minimum number of frequency
points that will be used in the SOS calculation. If this
number is not met then the calculation is not performed
and an error is reported.
4553 2 Long
SOS_NUM_PTS_LE
FT The number of frequency points used from the left ridge
of the k-w plot.
4555 2 Long
SOS_NUM_PTS_RI
GHT The number of frequency points used from the right ridge
of the k-w plot.
4557 2 Long
AGC_THRESHOLD_
HIGH
Upper threshold limit for sensor readings. Used to detect
High Threshold sensor readings during AGC mode
functions.
4559 2 Long
AGC_THRESHOLD_
LOW
Lower threshold limit for sensor readings. Used to detect
Low Threshold sensor readings during AGC mode
functions.
4561 2 Long
AGC_PERCENT_TH
RESHOLD_HIGH
Represents the percentage value of High Threshold
faults required to be detected before asserting an
Excessive Gain condition during AGC functions.
20959-01 Rev 02 Page 3-27