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Chapter 4
char
short
long
double
float
4.4.2
Commonly-Used Fields
Some of the more commonly-used fields are discussed in this section.
4.4.2.1
Serial Port Identifiers
The values used to indicate serial ports are given below.
4.4.2.2
Message Type Indicator
The Message Type Indicator is a byte given in numerous binary format messages and all binary headers. It
follows the format in Table 11 below.
42
Table 9: Byte Arrangements
7
0
address n
15
7
0
n + 1 address n
31
23
15
n + 3
n + 2
n + 1
63 62
52 51
S Biased Exponent|
n + 7
n + 6
n + 5
31 30
23 22
S Biased Exponent| 23-bits mantissa
n + 3
n + 2
n + 1
Table 10: Serial Port Identifier Values
ASCII
COM1
COM3
Table 11: Message Type Byte Format
Bit
0-4
Reserved
Message format, where
00 = Binary
5-6
01 = ASCII
10 = Abbreviated ASCII, NMEA
11 = Reserved
Response indicator, where
0 = original message
7
1 = response message.
(See Section 4.2 on Page 37 for more
information on logging data.)
7
0
tw o's compliment
address n
52-bits mantissa
n + 4
n + 3
n + 2
0
address n
Binary
32
96
Description
EuroPak-15ab Receiver User Manual Rev 1
Using Commands and Logs
0
n + 1
address n
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