Leica iCON aps 200, Руководство пользователя

Страница: 60 / 84

Symbol Field Description Example
•
Leading zeros are always
included for hours, minutes
and seconds to maintain
fixed length.
mmddyy Date
•
Monthdayyear - two fixed
digits of month, two fixed
digits of day, two fixed
digits of year.
093003
•
Leading zeros always
included for month, day
and year to maintain fixed
length.
No specific
symbol
Defined
field
•
Some fields are specified
to contain predefined con-
stants, most often alpha
characters.
M
•
Such a field is indicated
by the presence of one
or more valid characters.
Excluded from the list of
valid characters are the
following that are used to
indicate other field types:
A, a, c, x, hh, hhmmss.ss,
llll.ll, yyyyy.yy.
Symbol Field Description Example
x.x Variable
numbers
•
Integer or floating numeric
field
73.10 = 73.1 =
073.1 = 73
•
Optional leading and trail-
ing zeros. Decimal point
and associated decimal-
fraction are optional if full
resolution is not required.
hh_ Fixed HEX
field
Fixed length HEX numbers 3F
Symbol Field Description Example
c--c Variable
text
Variable length valid character
field
A
aa_ Fixed alpha
field
Fixed length field of upper case
or lower case alpha characters
N
xx_ Fixed num-
ber field
Fixed length field of numeric
characters
1
Numeric value fields
Information fields
60 NMEA Message Formats