Symmetricom 1100 User Manual

Chapter 6 Maintaining and Troubleshooting the TimeProvider
Replacing the Input Module

166  TimeProvider User’s Guide

The Input module contains connectors for the input signals and the alarm output 
connector. 

To remove the Input module:

1. Disable the inputs by issuing the following commands, as appropriate:

ED-EQPT::PRS:::INSTATE=DISABLE;

ED-EQPT::INPp:::INSTATE=DISABLE;

where p is 1 to disable INP1 or 2 to disable INP2

2. Wait for the TimeProvider to enter the Holdover state before proceeding.

3. Attach a wrist grounding strap and connect it to the TimeProvider chassis.

4. Remove the input connections.

5. Remove the alarm connections.

6. Remove the Input module by loosening the captive screws and pulling the 

module off the shelf. 

To install the Input module:

1. Install the Input module on the connector on the shelf and tighten the captive 

screws.

2. Install the input signal connections. 

3. Install the alarm connections. After you install the connections, you can remove 

the protective ground strap from your wrist.

4. Enable the inputs by issuing the following commands as appropriate:

ED-EQPT::PRS:::INSTATE=ENABLE;

ED-EQPT::INPp:::INSTATE=ENABLE;

where p is 1 to enable INP1 or 2 to enable INP2

Warning: To avoid possible electrostatic damage to the Input 
module, place it in a static-free bag or on a static-free surface.