HP 83236B S Interface manual Steps Go to Spectrum Analyzer & Enter Freq

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Chapter 2, Making Measurements

Transmit Spectrum

Steps: Go to Spectrum Analyzer & Enter Freq

1Connect the equipment as shown in figure 16.

2Turn on your base station transmitter.

3In the main menu, scroll to and select Go to Spectrum Analyzer & Enter Freq.

4The PCS Interface analyzer attenuation setting will appear in the field labelled HP83236 Input Attenuator. This value is optimized based on your entries for base station power and cable losses. However, you can make changes to the value using the HP83236 Input Attenuator field before going to the spectrum analyzer and viewing the signal. For example, you may want to reduce the attenuation to improve the signal strength relative to that of the spectrum analyzer noise floor. Make the change now if you want a different attenuation value (range is 0 to 40 dB).

NOTE:	Your change to the attenuation value, if you make one, will only be effective while using
	the spectrum analyzer screen. When you return to the main menu, the value will be re-set
	to the computed optimum value.

5Scroll to and select Spectrum Analyzer Freq.

6Enter the frequency of interest using the DATA keys (the range is 1710 to 1990 MHz) and press ENTER.

7Scroll to and select Go to Spectrum Analyzer Screen to see the spectrum analyzer display (see figure 18). The center frequency of the displayed signal matches the frequency you entered in step 6.

8Use the Controls area (set to Main) in the lower part of the spectrum analyzer screen to make changes to the reference level and span settings as desired. Set the Controls field to Marker to use marker functions.

9To return to the main menu press SHIFT, then k1, then ENTER.

Note that the Marker Frequency readout is corrected to read the actual PCS frequency.

Figure 18

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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 Required Equipment You must supplySynth REF Load and Run the CDMA/PCS BS Test Software Tests Main Menu screen CDMA/PCS Test Software main menu features Configure the Software Select Configuration Information MenuScroll to and select your band of interest User k1 If You Had ProblemsPerform Cdma Tests Perform Cdma Tests Making Measurements Making Measurements Overview Transmitter Measurements Receiver Measurements OtherRequirements Average PowerOverview Steps Information Menu under TX Measurement Path LossModulation 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 Transmit Spectrum AnalyzerSteps 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 Error Rate FER is measured at each Eb/No level Receiver Performance in Additive NoiseEb/No Level Search for PN Offset PN Offset not Found Check for a valid clock signal from the base station Check Even-Second ClockCorrelating in , Troubleshooting, on Check Even-Second Clock Operating Overview Reference ConfigurationInformation Selecting a PCS Band To select a new PCS BandChannel plans for PCS Band selections Compensating for TX and RX Measurement Path Loss You must know the following loss valuesSaving Configuration Information to Memory BeepLoading Configuration Information from Memory Requirements StepsPurging Configuration Information from Memory Turning On Using AutostartAutostart Feature Turning OffViewing Instrument Connections ConnectionsSetting the Test System Beep To Memory on Cdma Base Station Operating Overview Troubleshooting Troubleshooting Errors When Loading and Running the Software Memory Overflow ErrorsTest System Configuration Errors at Runtime Compensation not performed. Check Duplex OUT cable. Retry? Errors When Loading and Running the Software Errors While Attempting Measurements Cdma Measurement not CorrelatingErrors While Attempting Measurements Frame Error Rate Receiver Measurements Incorrect Base Station Channel entryErrors While Attempting Measurements Average Power Questionable Measurement ResultsMeasurements Rho MeasurementsCode Domain Receiver TestsSensitivity 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