X
X
L
L
D
D
C
C
M
M
A
A
N
N
.
.
d
d
o
o
c
c
3
3
-
-
5
5
7
7
R
R
E
E
V
V
E
E
Sample request: F50<CR>
Response:
F50 N 38d23'51.3" W 122d42'53.2" 58m pdop 2.69<CR><LF>
To enter a position send a character string with the following format. Latitude, longitude or altitude may
be omitted in the string provided they are replaced with a semicolon (;) character. The altitude units
may be feet or meters.
Sample entry:
f50 n 38d23'51.3" w 122d42'53.2" 10m<CR>
equivalent:
F50 + 38D23M51.3S + 122D42M53.2S +10M<CR>
Response:
OK<CR><LF>
Sample request: F50<CR> (after sending above string)
Response:
F50 N 38d23'51.3" W 122d42'53.2" 10m pdop 2.69<CR><LF>
Sample entry:
f50;;40m (with values from example above)
equivalent:
F50 ; ; 40M
(no change to latitude or longitude - altitude now 40m)
Response:
F50 N 38d23'51.3" W 122d42'53.2" 40m pdop 2.69<CR><LF>
NOTE: Altitude must be included in the position entry string - either a value or a (;) must be entered or a
syntax error will occur (causing the entered string to be ignored).
3-251 SERIAL FUNCTION F51 - ANTENNA CABLE DELAY ENTRY/REQUEST
Use Serial Function F51 to enter or request the antenna cable delay. The default is 60ns. The delay
for RG-58 cable is approximately 1.4 ns/foot and RG-59 cable is approximately 1.24 ns/foot.
When the
down converter antenna is being used, 150 ns should be added to the cable delay entered here.
The value is held in NVRAM. To determine the present value, send F51<CR> to the Serial Port. The
port will respond with the ASCII character string in the following format:
F51<SEP><SIGN><DELAY>ns<LT>
where:
F
= ASCII character F (f or F for input string)
51
= the function number
<SEP>
= one or more space characters
<SIGN>
= or -
<DELAY>
= 1 to 9 digit delay from +001000000 ns to -001000000 ns
ns
= nanoseconds (ns or NS for input string)
<LT>
= line terminator, either a carriage return and line feed for output strings or a
carriage return only for input strings
<SP>
= ASCII space character
Sample request: F51<CR>
Response:
F51<SP><SP><SP><SP><SP><SP><SP><SP>+60ns<CR><LF>
Summary of Contents for 151-600
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