Specifications are subject to change without notice

DATA SHEET #: TM020

REVISION #: P00

FILENAME: TM020.DOC

DATE: 7/18/00

Page 6 of 7

Copyright 1999,2000 Connor-Winfield all rights reserved

THE CONNOR-WINFIELD CORP.

Stratum 3 Simplified Control

Timing Modules (MSTM-S3-T2NC)

Table 5.0

PIN DESCRIPTIONS

MSTM-

S3

PIN #

PIN NAME

PIN DESCRIPTION

1

HOLDOVER

Output. High when the control inputs select Holdover.

2

REF 1

Output. High when the control inputs select EX REF 1.

3

REF 2

Output. High when the control inputs select EX REF 2.

4

FREERUN

Output. High when the control input selects Free Run.

5

Gnd

Ground

6

ALARM OUT

Output. =1, if (FREERUN + HOLDOVER + LOS + LOL + PLL TVL).

7

CNTL A

Mode control input.

8

CNTL B

Mode control input.

9

PLL TVL

Tuning Voltage Alarm. =1 if CAPTURE RANGE NEAR 10% OF EXTREME.

10

Gnd

Ground

11

SYNC_OUT

Synchronized output.

12

Gnd

Ground

13

CLK_OUT

N/C

14

Gnd

Ground

15

EX REF 2

External Reference #2 Input. (8KHz)

16

Gnd

Ground

17

EX REF 1

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

18

+5 Vdc

+5 Volt DC Supply

NOTES FOR TABLES 1-5

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 frequencies.

6.0

REF-GR1244-CORE 3.2.1 R3-1.

7.0

At ‘1’ level indicates unit is within the extreme 10% of its operating range tracking the reference.