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T est Equipment Set Up Chapter 3: LMF Oper ation
Test Equipment Preparation
See Appendix D T est Equipment Preparation for specific steps to prepare each type of test
set and power meter to perform calibration and A TP . The Agilent E7495A communications
test set requires additional setup and preparation. This is described in detail in Appendix D
T est Equipment Preparation .
Calibration of the communications test set (or equivalent test equipment) must be
performed at the site before calibrating the overall test equipment set. Calibrate the
communications test set after it has been allowed to warm up and stabilize for a
minimum of 60 minutes .
If an y piece of the test equipment set (for example, test cable, RF adapter) has
been replaced, the test equipment set must be re–calibr ated. F ailure to do so could
introduce measurement errors, resulting in incorrect measurements and degr adation
to system performance.
Equipment Warm -up
W arm -up UBS equipment for a minimum of 60 minutes prior to performing the UBS optimization
procedure. This assures UBS site stability and contributes to optimization accuracy .
Time spent running initial power -up, hardware/firmware audit, and UBS download
counts as warm -up time.
Before connecting an y test equipment directly to an y UBS TX or duplex ed TX/RX
connector (for example, the TX/RX M connectors for a UBS equipped with IDRFs),
v erif y there are NO channels k ey ed. A t activ e sites, ha v e the OMC –R place the carriers
assigned to the XMI under test OOS . F ailure to do so can result in serious personal
injury and/or equipment damage.
3 -34 68P09283A63 -5
FOA A UG 2007