THE CONNOR-WINFIELD CORP.

2111 COMPREHENSIVE DRIVE.

AURORA, IL 60505.

FAX (630) 851-5040.

PHONE (630) 851-4722

HTTP://WWW.CONWIN.COM

DATA SHEET #: ____________ PAGE______ OF _______ REV:________ DATE:____________

CONNOR

WINFIELD

© Copyright 2000 Connor-Winfield all rights reserved.

Specifications subject to change without notice.

TM000

1/3/2000

04

NETWORK ELEMENT TIMING GENERATOR

STRATUM 3 SIMPLIFIED CONTROL

TIMING MODULES (STM-S3)

INT

5

6

STM-S3

PIN #

1

HLDOVR

-Output. High when the control inputs select Holdover.

2

REF _1

-Ouput. High when the control inputs select EX REF_1.

3

REF_2

-Output. High when the control inputs select EX REF_2.

4

FRERUN

-Output. High when the control input selects Free Run.

5

Gnd

-Ground.

10

ALARM_OUT

-Ouput. =1,If (FRERUN + HOLDOVER + LOS + LOL + PLL_TVL) .

11

CNTL_A

-Mode control input.

12

CNTL_B

-Mode control input.

13

PLL_TVL

-Tuning Voltage Alarm. =1 If CAPTURE RANGE NEAR 10% OF EXTREME (~11ppm).

14

Gnd

-Ground.

15

SYNC_OUT

-Syncronized output.

17

Gnd

-Ground.

18

CLK_OUT

-Stratum 3 TCXO output. (Non-synchronized).

20

Gnd

-Ground.

21

EX_REF_2

-External Reference #2 Input. (8 KHz)

22

Gnd

-Ground.

23

EX_REF_1

-Input. External Reference #1 Input. (8 KHz)

24

+5 Vdc

+5 Volt DC supply.

PIN DESCRIPTION

NOTES:

2.0

Holdover stability is the cumulative fractional frequency offset containing Initial Offset, Temperature, and Drift components as described by

Bellcore GR-1244-CORE 5.2.

3.0

Pull-in range is the minimum frequency deviation on the reference inputs to the timing module that can be overcome to pull itself into synchronization

with the reference.

4.0

After 100 seconds at stable room temperature.

5.0

Consult factory for other output frequencies.

6.0

Ref- GR1244-CORE 3.2.1 R3-1.

7.0

A ‘1’ level indicates unit is within the extreme 10% of its operating range tracking the reference (~11ppm). Consult factory for use as a reference

quilifier.

8.0

Add ‘-T2’ to model number.

9.0

Consult factory for power dissipation of -T2 (0 to +70 deg. C.) devices.

NOTES FOR TABLES 1-3