Symmetricom XLi IEEE 1588 F51 GPS Antenna Cable Delay, XLi responds using the following format

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

XLi responds:

F50 B1 N 38d23'51.3" W 122d42'53.2" 58m<CR><LF>

To display the present antenna position using ECEF XYZ coordinates in meters, use the following format:

F50<S>B<N><SEP>XYZ<CR>

XLi responds using the following format:

F50B<N><S><SIGN><S><MX>m<S><SIGN><S><MY>m<S><SIGN><MZ>m<CR><LF>

where:

F= ASCII character F

50 = function number

<S> = ASCII space character

B= ASCII letter to denote Option Bay number follows

<N>	= Option Bay Number, 1 through 4.
<SIGN>	= Either + or - for the position of the ECEF XYZ coordinates
<MX>	= Antenna X-position in meters to tenths of a meter
<MY>	=	Antenna Y-position in meters to tenths of a meter
<MZ>	=	Antenna Z-position in meters to tenths of a meter

m= ASCII character m for Meters

<ALT>	=	altitude in meters
<CR>	=	carriage return character
<LF>	=	line feed character

For example:

F50 B1 XYZ<CR>

XLi responds:

F50 B1 X –4474331m Y 2668899m Z –3668099m<CR><LF>

F51 – GPS Antenna Cable Delay

Use function F51 to display or configure the GPS antenna cable delay. Setting a positive value for F51 compensates for the time the signal takes to travel the length of the cable from the GPS antenna to the receiver. When multiple GPS receivers are installed, a separate value can be set for each unique receiver. The factory setting for F51 is +60 ns, which corresponds to the 50-foot (15.24-meter) long RG-

XLi IEEE 1588 Clock 55

997-01510-03, Rev. C, 12/12/2006