User's Guide ______________________________________________________________________
64 __________________________________________________________________ M210482EN-B
CT25KAM Data Messages
Ceilometer CL31 also includes two Ceilometer CT25KAM data
messages. These are data message No. 60 and data message No. 61.
CT25KAM Data Message No. 60
CT25KAM message number 60 is identical to CT25K message
number 6. Refer to section CT25K Data Message No. 6 on page 62.
CT25KAM Data Message No. 61
CT25KAM message number 61 is similar to CT25KAM message
No. 60 (and CT25K message No. 6) but extended with a fifth layer in
the sky condition line. An example of data message No. 61 is
presented below:
CTA2061
☺
↵
1st line
11 char.
30 01230 12340 23450 FEDCBA98
↵
2nd line
31 char.
3 055 5 170 0 /// 0 /// 0 ///
↵
3rd line
37 char.
↵
4rd line
3 char.
------------------
total 82 characters
The transmission time and size is the following:
total 82 characters
=> 0.34 s at 2400 baud (10-bit char.)
=> 20.4 Kbytes/h, 490 Kbytes/d, 14.6 Mbytes/mo. at 4 msg/min,
uncompressed
LD40 Standard Telegram
Ceilometer CL31 also includes one Ceilometer LD40 data message.
This is the standard telegram 'X1TA'. This message is given in clear
text and includes cloud heights and additional meteorological data,
date, time, sensor address, and status information of the instrument.
