Specifications

1X UBS Macro B T S Optimization/A TP Ba y Lev el Offset Calibr ation
Before connecting an y test equipment directly to an y TX OUT connector y ou must
rst v erif y that there are no CDMA channels k ey ed. Ha v e the OMC –R place all
sectors under test OOS . F ailure to do so can result in serious personal injury and/or
equipment damage.
Alw a ys wear an appro v ed anti–static wrist str ap while handling an y circuit
card/module. If this is not done, there is a high probabilit y that the card/module
could be damaged b y ESD .
BLO Calibration Data File
During the calibration process, the LMF creates a UBS–#.cal calibration (BLO) offset data
file (CAL file) in the UBS–# folder . A fter calibration has been completed, Cal file has to be
downloaded to the UBS using UBS–>Upload CAL File function. An explanation of the file
is shown below .
Test Equipment Set -up for RF Path Calibration
F ollow the procedure in Procedure E -1 to set up test equipment.
Procedure E -1 T est Equipment Setup (RF P ath Calibr ation)
1
V erify the GPIB controller is properly connected and turned on (does not
apply to the Agilent E7495A/B).
T o prev ent damage to the test equipment, all tr ansmit (TX) test
connections must be via the 30 dB directional coupler . T otal cable
loss should be no less than 30 dB .
2
If it has not already been done, connect the LMF computer to the UBS LMT
connector on the UBS .
68P09283A63 -5 E -7
A UG 2007 FOA