HP 83236B S Interface manual Details on the use of the Code Domain Analyzer screen

Page 33

Chapter 2, Making Measurements

Code Domain Timing

Steps

1

Connect the equipment as shown in figure 12.

2

In the main menu, enter the Base Station Channel number for the transmitter

being tested.

3

Also in the main menu, enter the Base Station PN Offset.

4

Scroll to and select Go to Code Domain Analyzer Screen.

5

Scroll to the Measurement field at the bottom of the display and set to Timing (if

not already selected).

6

Turn on your base station transmitter with the Pilot, Sync, Traffic, and Paging channels

enabled.

7

You should now see a display of relative timing, as shown in figure 13.

8

If you need to re-scale the vertical resolution, select Controls:Marker and then

scroll to the Time/div field and select from settings of 1 to 50 ns.

9

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

Figure 13

Notes	The Tune Freq displayed at the bottom of the CODE DOMAIN ANALYZER screen
	does not indicate the true tuned frequency of the Test System. The tuned
	frequency is calculated from your entry for Base Station Channel and can be
	viewed at the bottom of the main menu screen. Do not make changes to the Tune
	Freq setting of the CODE DOMAIN ANALYZER screen.
	If you are planning to test Code Domain Power or Code Domain Phase, you can
	use the Measurement field to activate them without having to return to the main
	menu.
	Refer to the HP 83203B or 83205A Cellular Adapter User’s Guide for more
	details on the use of the CODE DOMAIN ANALYZER screen.

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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 Autostart Feature Using AutostartTurning On Turning OffConnections 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 PowerCode Domain Rho MeasurementsMeasurements 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