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Chapter 4, Description of Fields
Fields
Max Power
The value shown under the Max Power label in the upper left portion of the
display is the maximum power measurement result obtained the last time a Min/
Max Power measurement was executed.
GPIB Example
“DISP CTXR;MEASure:CDManalyzer:MMPower:[EXECute]”
executes a Min/Max Power measurement.
“DISP CCNT;CDMA:MOBile:POWer:MAXimum?“
queries the Max Power measurement value.
Operating Considerations
While a mobile station is on a call, the mobile station’s range of power levels can
be obtained by selecting the Execute field under the Min/Max Pwr label. Before
Min/Max Power is executed, make sure that the Average Power measurement is
zeroed, and the Channel Power measurement is calibrated. (Refer to
“Calibrating the Test Set” chapter in the E8285A Application Guide, if you do not
know how to zero Average Power measurements and calibrate Channel Power
measurements).
The Test Set will measure the mobile station’s minimum power first. Using a
procedure that closely follows the EIA/TIA IS-98 test “Minimum Controlled
Output Power”, the Test Set sets Sector A power to -3535 dBm/BW and Traffic
E
c
/Ior
to -7.4, then sends “Always Down” power control bits to drive the mobile
station to its minimum power level. A Channel Power measurement is made, and
the Test Set is returned to closed loop power control mode.
Then, to measure maximum power, the Test Set sets Sector A power to -104 dBm/
BW, turns the Call Drop Timer “Off”, and sends “Always Up” power control bits
to the mobile station, using a procedure similar to the EIA/TIA IS-98 test
“Maximum RF Output Power”. An Average Power measurement is made, and the
Test Set is returned to closed loop power control mode.
See Also
Min/Max Pwr
field description, on page 297
Min Power
field description, on page 296
Screens Where Field is Present
CDMA TRANSMITTER POWER RANGE TEST