Features
Phaselocked10MHzoutput
1PPSoutput
3selectablereferences:GPS,External10MHzorExternal1PPS
Holdover
Threealarmoutputs.(Loss-of-Lock,HoldoverandAntennaFault)
Serialinputandoutputports(GPSreceiver)
Masterreset
+3.3Voltpowersupply
CommercialTemp(0-70°C)
MeetsITU-TG.811WanderGenerationMask
MeetsETSI-PRCWanderGenerationMask(withOCXOreference)
MCXGPSAntennaConnection
FixedPositionUnit
Package:32-pinThrough-Hole
PhysicalDimensions:4.15”x3.3”x0.718”(105.41mmx83.82mmx18.22mm)
125 Series
FTS125-CTV-010.0 MHz
GPS Disciplined Oscillators
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Bulletin
SG185
Revision
02
Date
03 Jan 12
Issued By
ENG
General Description
The FTS125-CTV-010.0 MHz Frequency and Time
Standard module is a TCXO GPS driven, mixed-signal
phase lock loop, providing a 1 PPS CMOS output from
a Connor-Winfield GPS timing receiver and generating
a 10 MHz CMOS and a 10 MHz SINE output from an
intrinsically low jitter voltage controlled crystal oscillator.
The FTS125 can lock to a 10 MHz reference derived
from the on-board GPS receiver or an external 10 MHz
reference or to an external 1 PPS reference. Alarms
are provided to indicate Loss-of-Lock, Holdover, and
Antenna Fault. The on-board GPS receiver requires an
outdoor mounted GPS antenna for the best stability and
consistent performance.
The mode control inputs are used to manually
switch between references and/or holdover. The user
application should monitor the alarm outputs and manually switch modes as needed.
Serial I/O lines provide access to the NMEA messages from the GPS receiver
(referenced in the Connor-Winfield’s Wi125 User Manual. Contact Connor-Winfield Sales
for a copy). The serial I/O lines can be used to access GPS timestamp information, or to
verify that the receiver has recovered from an alarm condition. The reset is used to reset
the GPS receiver (if needed).
D
A
T
A
S
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E
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Available at Digi-Key
www.digikey.com
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