XLi Time & Frequency System 109
XLi-man, Issue 8, 6/17/2008, Rev. H
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SSSSSSSSSSSS SSSSSSSSSS SSSSSSS S SSS S SSSSS S
F77 - PTTI Output Configuration
The Precision Time and Time Interval (PTTI) with BCD/PPS/PPM Output option board status can be
determined via the Serial or Network port using Function F77. Use Serial/Network Function F77 to
obtain information about the part number and the current version of the FPGA installed on the PTTI with
BCD/PPS /PPM option board. To obtain board status information, send the following string to the Serial/
Network port:
F77<SP>B<N><SEP>S<CR><LF>
where:
F = ASCII character F.
77 = function number.
<SP> = ASCII space character one or more.
B = ASCII character to denote Option Bay number follows
<N> = Option Bay Number, 1 through 10.
S = ASCII character for “Status Request”
<LT> = line terminator; for output strings (a carriage return and line feed ) or for input strings (a
carriage return only).
The XLi Serial/Network port will respond with a two-line replay for status request similar to the following
example:
Sample request: F77 B2 S<CR><LF>
Response: F77 B2: <CR><LF>
PTTI OUTPUT PART NUMBER 87-8045<CR><LF>
FPGA 230-01510-37v01<CR><LF>
To obtain the PTTI Output option board BCD Time Mode information, send the following string to the
Serial/Network port:
F77<SP>B<N><SEP>TM<CR><LF>
where:
F = ASCII character F.
77 = function number.
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