Symmetricom 1100, 1000 manual Making Alarm Connections, Pin Description

Chapter 3 Installing the TimeProvider

Making Connections

Making Alarm Connections

To install alarm connections on the Input Module, use a customer-supplied DB-25 connector to build an alarm connection to the TimeProvider. Table 3-6lists the pinout for the DB-25 Alarm connector found on all the Input modules (except the wire-wrap version).

Table 3-6. Alarm Connector Pinout

Pin	Description
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

70 TimeProvider User’s Guide 097-58001-02 Revision G – April 2008