Features

125 Series

FTS125-COO-010.0 MHz

GPS Disciplined Oscillators

2111 Comprehensive Drive

Aurora, Illinois 60505

Phone: 630- 851- 4722

Fax: 630- 851- 5040

www.conwin.com

Bulletin

SG184

Revision

02

Date

03 Jan 12

Issued By

ENG

General Description

The FTS125-COO-010.0 MHz frequency and time

standard module is an OCXO based 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).

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Available at Digi-Key

www.digikey.com