HP 83236B S Interface manual Steps, Information Menu under TX Measurement Path Loss

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Chapter 2, Making Measurements

Average Power

Steps	1	Connect the equipment as shown in figure 6.
	2	In the main menu, enter the Base Station Channel number for the transmitter
		being tested.
	3	Set up the base station to transmit on the channel number entered in step 2.
	4	From the main menu, choose Perform Average Power Measurements.
	5	The resulting screen (see figure 7) will display average power (in Watts). The average
		power displayed is corrected for the loss value entered in the Configuration
		Information Menu under TX Measurement Path Loss.
	6	You can change the measurement’s units to milliwatts or dBm using USER keys k3 and
		k4, respectively.
	7	USER key k1 will re-zero the power meter. It is not necessary to remove power from
		the RF IN/OUT port of the PCS Interface to zero the power meter.
	8	If you want to measure average power at another frequency, return to step 2.
	9	Press the Main Menu (k5) key to return to the main menu.

1.28

In this example, loss through a 20 dB attenuator was added to an additional 1 dB of cable loss.

Zero Pow

Watts

mW

dBm

Main Menu

Figure 7
Notes	To minimize measurement errors due to temperature drift, occasional zeroing of
	the power meter is recommended. An initial zeroing is performed when you enter
	the Average Power measurement screen. It is not necessary to remove the
	signal from the RF IN/OUT port of the PCS Interface for zeroing.

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Contents CDMA/PCS Base Station Test Software, User’s Guide Restricted Operating Overview Conventions Used in this Book Contents Making Measurements Receiver Sensitivity Operating Overview Setting the Test System Beep Glossary Index Getting Started Introduction You must supply Required EquipmentSynth REF Load and Run the CDMA/PCS BS Test Software Tests Main Menu screen CDMA/PCS Test Software main menu features Select Configuration Information Menu Configure the SoftwareScroll to and select your band of interest User k1 Problems Perform Cdma TestsIf You Had Perform Cdma Tests Making Measurements Making Measurements Transmitter Measurements Receiver Measurements Other OverviewAverage Power OverviewRequirements Information Menu under TX Measurement Path Loss StepsModulation Quality Rho Measurement not Correlating in , Troubleshooting, on Code Domain Power Menu Code Domain Timing Details on the use of the Code Domain Analyzer screen Code Domain Phase Already selected Analyzer Transmit SpectrumSteps Go to Spectrum Analyzer @ Present Chan Steps Go to Spectrum Analyzer & Enter Freq Transmit Spectrum Receiver Sensitivity Main menu, enter the Base Station Channel number Receiver Performance in Additive Noise Error Rate FER is measured at each Eb/No levelEb/No Level Search for PN Offset PN Offset not Found Check Even-Second Clock Check for a valid clock signal from the base stationCorrelating in , Troubleshooting, on Check Even-Second Clock Operating Overview Configuration InformationReference To select a new PCS Band Selecting a PCS BandChannel plans for PCS Band selections You must know the following loss values Compensating for TX and RX Measurement Path LossBeep Saving Configuration Information to MemoryRequirements Steps Loading Configuration Information from MemoryPurging Configuration Information from Memory Turning Off Using AutostartAutostart Feature Turning OnConnections Viewing Instrument ConnectionsSetting the Test System Beep To Memory on Cdma Base Station Operating Overview Troubleshooting Troubleshooting Memory Overflow Errors Errors When Loading and Running the SoftwareTest System Configuration Errors at Runtime Compensation not performed. Check Duplex OUT cable. Retry? Errors When Loading and Running the Software Cdma Measurement not Correlating Errors While Attempting MeasurementsErrors While Attempting Measurements Incorrect Base Station Channel entry Frame Error Rate Receiver MeasurementsErrors While Attempting Measurements Questionable Measurement Results Average PowerReceiver Tests Rho MeasurementsCode Domain MeasurementsSensitivity tests random data not selected for signal source Questionable Measurement Results Glossary Glossary Modulation Quality See Rho Glossary Glossary Glossary Index Index FER Index Oqpsk PCS Qpsk UCT Walsh chip