Koden CVR-010, Руководство по эксплуатации, Страница: 101 / 114

CVR–010
Installation Instructions
91
13.3.4.4. Navigational Data Sentences
(continued – 3/3)
On–demand Depth Output Data:
・
The following IEC 61162–1/NMEA–0183 –compliant proprietary sentence can be output
at 4800 baud on demand from the non–volatile (flash) memory. Refer to paragraph 10.2
for details.
・
No hand–shaking protocol is used to control data transfer.
・
The detailed sentence format is given below.
$
PJMCN
,
X
.
X
,
X
.
X
,
X
.
X
,
50
,
ddmmyy
,
hhmmss
,
(continued to next line)
① ② ③ ④ ⑤ ⑥ ⑦
IIII
.
III
,
a
,
yyyy
.
yyy
,
a
*
h h
< CR > < LF>
⑧ ⑨ ⑩ ⑪ ⑫
①
Talker Identifier
(proprietary)
②
Depth below transducer
* 1
in meters, varying in length ; null if depth information was
unavailable (i.e. if bottom was not received in one of two strongest echo colors).
③
Offset
* 1
; positive ( + ) = transducer draft, negative (– ) = offset from transducer to keel
④
Maximum depth range used; in meters
* 2
⑤
Transducer frequency; 50 = 50 kHz, 100 = 100 kHz, 200 = 200 kHz
⑥
Date
(day/month/year)
referenced to UTC; fixed in length
⑦
UTC time (hours/minutes/seconds) , derived from internal clock or from GPS time if valid
position fix was available; fixed in length.
⑧
Latitude coordinate (to 1/1000 minutes) , varying in length ; null if valid GPS position fix
was temporarily unavailable.
⑨
Latitude sign
(N/S)
; null if valid GPS position fix was temporarily unavailable.
⑩
Longitude coordinate
(to 1/1000 minutes)
, varying in length; null if valid GPS position fix
was temporarily unavailable.
⑪
Longitude sign (E/W) ; null if valid GPS position fix was temporarily unavailable.
⑫
Checksum
* 1
:
If both offsets were entered, two $PJMCN sentences will be output with the same DBT value; one contains the
transducer draft, and the other, the keel offset.
*
2
:
If the depth measurement was made in fathoms or feet, the following metric values are used to represent the
maximum depth range in use:
Table 13-2 Equivalent Maximum Range Scales in Fathoms and Feet
Value (m)
④
Max. range in fathoms Value (m)
④
Max. range in feet
4.5m 2.5 6.1m 20
9.0m 5 12.2m 40
18.2m 10 30.6m 100
36.5m 20 61.2m 200
91.4m 50 122.5m 400
182.8m 100 306.4m 1000
365.7m 200 612.8m 2000
914.4m 500 1225.6m 4000