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Symmetricom XL-GPS User Manual

Symmetricom XL-GPS
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F52 Distribution Cable Delay
F52 Distribution Cable Delay
Use function F52 to display or set the distribution cable delay for the standard CODE (time
code) and 1PPS outputs. F52 compensates for the signal’s travel time from the XL-GPS to
its point of use. The distribution cable delay applies uniformly to all output ports. The as-
shipped factory setting is +0ns. The range of possible values is +999,999ns to –999,999ns.
Positive values advance the timing signals, while negative values retard them.
To calculate what the setting should be, multiply the delay/foot by the length of the cable in
feet. The typical delays for the following cable types are:
RG-58 approximately 1.4ns/foot
RG-59 approximately 1.24ns/foot
See "Factory Default Jumper and Switch Settings for Options" on page 166
Command Line
To display the current distribution cable delay, enter:
F52<CR>
The XL-GPS responds using the following format:
F52<SEP><SIGN><DELAY>ns<CR><LF>
where:
F
= ASCII character F (f or F for input string).
52
= the function number.
<S>
= one or more space characters.
<SIGN>
= either + or
<D>
= 1 to 9 digit delay from +999999 nS to –999999 nS
ns
= nanoseconds (ns or NS for input string)
<CR>
= carriage return character
<LF>
= line feed character
For example, to display the current distribution cable delay, enter:
F52<CR>
098-00116-000 Rev. A............................... Page 77 of 221

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Symmetricom XL-GPS Specifications

General IconGeneral
BrandSymmetricom
ModelXL-GPS
CategoryReceiver
LanguageEnglish

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