Handling Modules; Installing A Module - Symmetricom SSU-2000 User Manual

Handling Modules

The SSU-2000 shelf has twelve plug-in module slots, numbered A1 through A12,
from left to right looking at the front of the shelf. Each module slot has a specific
address and has two hybrid DIN connectors associated with it on the backplane.
The hybrid contacts of these connectors are used for Power, Logic Ground, Frame
Ground and RF connections. Each module slot has three pins connected together
on each hybrid DIN connector which are to detect module removal.
Caution: To avoid equipment damage due to poor ventilation and
EMI considerations, each slot in the SDU-2000 must contain either a
module or blank filler panel. Filler panels are available for
unpopulated slots.
Take the following precautions when handling any of the modules:
1. Use proper static control precautions when handling modules! Protect the
equipment against ESD (electrostatic discharge) by using a grounded protective
wrist strap and normal equipment grounding. Two ground connectors are
provided on the side of the unit to connect these straps to frame ground (one on
each mounting bracket).
2. Avoid touching component leads and edge connectors.
3. Avoid placing the module on an ungrounded surface.
4. Avoid allowing the module to come in contact with insulated surfaces.

Installing a Module

This procedure is common for all modules.
Note: Modules can be removed and inserted while system power is
supplied without damaging modules or affecting system operation.
Caution: For continued EMC compliance, replace all deformed
module gaskets with the same type. Clean gaskets and mating
surfaces. Secure all modules with captive screws.
12713020-002-2 Revision F.01 – January 2007
Chapter 2 Installing the SSU-2000
Handling Modules
SSU-2000 User's Guide 81