Chapter 5 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 77
Data values are presented for each 50 ft range gate. The height of the first
value in the line in thousands of feet. Two digits, a leading zero is
replaced by a space. Twenty 50 ft values per line starting with 0 (ft), next
line 1 000 (ft). 13 lines altogether. Last line (12 000 ft) has 10 values.
CT12K Digital Message No. 3
This message contains Status Line 1 identical to Message No. 2 (see
section CT12K Digital Message No. 2 on page 73) and one single range
gate data line indicating the presence or absence of backscatter in each
range gate.
An example of digital message No.3 is presented below:
10 04200 00150 ///// ///// 0000011010
0001FFF80000000000007A000......000
ON/OFF data is 1/0 accordingly. Other data is decimal or hexadecimal
numbers. The total length of the message is 112 characters. The printout
is 2 lines, the maximum width is 66 characters, of which 64 are visible.
The time for message transmission at 300 baud is 3.73 s.
Message Interpretation:
1ST LINE
Example:
where
= Start-of-Heading character
= Carriage Return + Line Feed
2ND LINE
The first line of the message is status line 1. Status line 1 of digital
message No.3 is identical to that of message No. 2 (see section CT12K
Digital Message No. 2 on page 73).
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