HP 83236B S Interface manual Eb/No Level

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Chapter 2, Making Measurements

Receiver Performance in Additive Noise

Steps	1	Make the equipment connections as shown in figure 21.
	2	On the main menu screen, enter the Base Station Channel number.
	3	Scroll to and select Setup CDMA Generator.
	4	Set the Generator Mode to Eb/No. Note that a new field appears called
		Eb/No Level.
	5	Set the Eb/No Level as called for in the test standard or in your base station test
		procedures (for example, 5.5 dB).
	6	Scroll to and set the RX PN Offset, typically to 0.
	7	Scroll to and set the Data Source to Random.
	8	Set the RF Level as called for in your test procedure.
	9	At this point, the CDMA signal generator is transmitting with random data and noise.
		Read the resulting Frame Error Rate from the base station.
	10	If desired, change the Eb/No Level according your test procedure and read the
		resulting FER value.
	11	When finished, return to the main menu by pressing the Main Menu (k5) USER key.

Figure 22
Notes	The cable loss (including losses through splitters, couplers, and so forth) entered
	into the Configuration Information Menu screen is taken into account
	when signal generator RF level settings are made. The level at the PCS Interface
	RF IN/OUT port is increased by the loss amount so the displayed RF level
	indicates the true level delivered to the base station’s receiver test port(s).
	The field RX PN Offset is provided for you to change the offset for your
	testing, if required. Normally, mobiles transmit on system time which
	corresponds to an offset of 0 (the default value in the Software menu).

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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 Perform Cdma Tests ProblemsIf You Had Perform Cdma Tests Making Measurements Making Measurements Transmitter Measurements Receiver Measurements Other OverviewOverview Average PowerRequirements 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 Information ConfigurationReference 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