12778474-002-2 Revision F – March 2004
TSG-3800 User’s Guide
61
Installing the TSG-3800
Installing and Removing Modules
Local Oscillator Outputs
Local Oscillator outputs on the rear panel of each shelf provide the unadjusted
10 MHz output from the Clock module oscillators for use with external global
positioning satellite (GPS) receivers. These outputs are not frequency adjusted;
rather they provide stable clock signals for the GPS receiver.
Table 2-7
shows the
pinouts for each TSG-3800 model.
Installing and Removing Modules
This section describes how to properly handle, install, and remove modules from
any TSG-3800 series shelf.
Properly Handling the Modules
The following should be considered when handling modules.
Use removal tool (item number 00478507-000-1) if available.
Use proper static control precautions when handling modules.
Protect the equipment against ESD by using a grounded protective wrist strap
and normal equipment grounding.
Two frame grounding lugs, one on each front mounting bracket of the TSG-3800,
provide the ground connection for the protective wrist straps.
Avoid touching component leads and the module’s edge-connector.
Avoid laying the module on an ungrounded surface.
Avoid touching the module to an insulated surface.
Slot Location and Keyed Modules
Locate the slot or slots allocated for the type of module being inserted. Modules are
keyed to prevent inserting into the wrong locations.
Figure 2-12
illustrates the
TSG-3800 main shelf and slot locations.
Table 2-7. Local Oscillator Output Connector Pins
Model
Connection
3800/3800E 19-inch Shelf
J11 and J12
3800 23-inch Shelf
J13 and J15
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