[time-nuts] Re; Lucent RFTG-m-XO

Phil Staton phil at barely.me.uk
Tue Feb 6 21:05:33 UTC 2007


Finally found my notes (hint: look on both sides of the page!)
24V 410mA

RS485 / 1PPS socket (F)
pin 1 +ve going 1PPS ~4v
pin 6 -ve going 1PPS ~4v
pulses ~4mS wide
data (same connector)
pin 9 and 5
pin 9 and gnd works for serial input to a terminal 9600 8 N 1
my 15MHz was low to start with ~0.51Hz
No Gps light did not go out until on frequency regardless of gps  
signal present or not
data on pin 9 (&5) :100200000032f3ac52E109cc
starts with a colon
cc seems to be a checksum
the first 2 changes to a 1 if gps ant disconnected and reconnected,  
at the same time the no gps led comes on
the zero after the 1st 2 changes to 4 if their really is no gps
the block 32...52 seems to be a count from last power up
the E109 has been constant throughout all tests

all corrections and explanations gratefully received

Should I ask for any info / manuals for
Adret 4101A  Frequency Standard Receiver
Adret 4110A Frequency Difference Multiplier
Tracor 895AS Linear Phase / Time Comparator
now or later?








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