Symmetricom 1000 ユーザーズマニュアル

Chapter 3 Installing the TimeProvider
Making Connections

 TimeProvider User’s Guide

To install alarm connections on the Input Module, use a customer-supplied DB-25 
connector to build an alarm connection to the TimeProvider. 

 lists the 

pinout for the DB-25 Alarm connector found on all the Input modules (except the 
wire-wrap version). 

1

No Connection 

2

Minor Normally Closed (NC) Audible

3

Minor Common Audible

4

Minor NC Visual

5

Minor Common Visual

6

Major NC Audible

7

Major Common Audible

8

Major NC Visual

9

Major Common Visual

10

Critical NC Audible

11

Critical Common Audible

12

Critical NC Visual

13

Critical Common Visual

14

Ground

15

Minor Normally Open (NO) Audible

16

Critical PRS Input NO

17

Minor NO Visual

18

Critical PRS Input Common

19

Major NO Audible

20

Major PRS Input NO

21

Major NO Visual

22

Major PRS Input Common

23

Critical NO Audible

24

No Connection

25

Critical NO Visible