Installing The Expansion Module; Verifying Antenna Installation; Rack Mounting The Xli - Symmetricom XLi User Manual

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Installing the Expansion Module

Warning:
Installing and removing the expansion module can expose dangerous voltages that
can cause electric shock resulting in injury or death. Disconnect all power before
installing or removing the option card. Dangerous voltages may be present in the
expansion module and in the unit even when the power is disconnected.
To install the optional Expansion Module:
1. Set the unit up on a clean, safe, stable work surface that provides good visibility and maneuverabil-
ity to work with screwdriver.
2. On the back panel, select an option bay and unscrew the retaining screws and remove the small
aluminum panel from the bay.
3. Line up the edges of the module with the guide grooves in the option bay and slide it in.
4. When the card is in almost all the way, push it firmly the rest of the way in until the faceplate of the
option card is flush with the back panel.
5. Insert and tighten the retaining screws so the expansion module is secured in place.
To remove the expansion module, remove the screws, pull the card out, and secure the small aluminum
panel in its place with the screws.

Verifying Antenna Installation

After completing the above steps, use the keypad/display to verify the following:
• In F119 – GPS Receiver Configuration (page
check that GPS STATUS is LOCKED and GPS ANTENNA is OK.
• In F73 – Alarm Control / Status (page
ENABLED (the same for GPS SEC, if two GPS receivers are present). Clear any alarm latches if
present.
• Press the STATUS key. "LOCKED GPS PRI" should appear on the front panel display without
an asterisk. If an asterisk appears, it means that a reference source is not available.
To troubleshoot a problematic Antenna installation, recheck the physical location of the antenna, the
cabling, and the configuration settings described in this manual.

Rack Mounting the XLi

The XLi comes with the following parts needed to mount the XLi securely in any EIA standard 19-inch
(48.26-cm) rack:
• 2 mounting brackets
• 4 flat-head, Phillips screws
XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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94), check that the GPS PRI is OK and is ALARM
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154), after approximately 20 minutes of operation,
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5
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