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Data Logs
5.1.1
Log Triggers
Each log can be configured for output when a certain condition, or trigger, is met. The possible triggers are:
•
ONNEW
•
ONTIME
•
ONCE
5.2
Fields
The logs for the G-III Reference Receiver use a variety of field types to convey data. The following sections
provide information on the types of fields used and some of the more commonly-used fields.
5.2.1
Field Types
The following table describes the field types used in logs.
Binary Size
Type
(Bytes)
Char
1
UChar
1
UShort
2
Long
4
ULong
4
Double
8
Float
4
Enum
4
Hex
n
String
n
WAAS G-III Reference Receiver User Manual Rev 1
Output a new log immediately and whenever the message is updated.
Output a new log at a specified interval (in seconds).
Output the current, existing message. Only a single log is generated.
Table 29: Field Types
An 8-bit signed integer in the range -128 to +127. This integer value may be the
ASCII code corresponding to the specified character.
An 8-bit unsigned integer. Values are in the range from +0 to +255.
A 16-bit unsigned integer in the range +0 to +65535.
A 32-bit signed integer in the range -2147483648 to +2147483647.
A 32-bit unsigned integer in the range +0 to +4294967295.
64 bits, with 1 for the sign, 11 for the exponent, and 52 for the mantissa. Its range is
±1.7E308 with at least 15 digits of precision. This is IEEE 754.
32 bits, with 1 for the sign, 8 for the exponent, and 23 for the mantissa. Its range is
±3.4E38 with at least 7 digits of precision. This is IEEE 754.
A 4-byte enumerated type beginning at zero (an unsigned long).
A packed, fixed length (n) array of bytes.
A variable length array of bytes that is null-terminated. The maximum byte length for
the field is shown in the row in the log table.
Description
Chapter 5
87
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