Agilent Technologies E8285A manual Executes a Min/Max Power measurement

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 Ec/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

293