Agilent Technologies E4400-90326 quick start Setting Up a Digital Modulation in the GSM Format

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ESG Family Signal Generators	Getting Started
	Setting Up a Digital Modulation in the GSM Format

Setting Up a Digital Modulation in the GSM Format

NOTE You must have an ESG-D or ESG-DP Series Signal Generator with Option UN8 to perform this procedure.

Using this procedure you will set up the signal generator to output a GMSK digitally modulated signal in the GSM format with the following characteristics:

•carrier frequency set to 891 MHz

•power level set to −5 dBm

•timeslot 0 activated and conﬁgured as a Custom channel

•a ﬁxed 4-bit repeating sequence selected as the data pattern for timeslot 0

•timeslot 7 activated and conﬁgured as a Normal channel

•4 ones and 4 zeros selected as the data pattern for timeslot 7

Setting the Carrier Frequency

1.Press Preset.

2.Press Frequency.

3.Enter 891 using the numeric keypad and press the MHz softkey.

This sets the signal generator to its factory-deﬁned instrument state.

Frequency becomes the active function and the preset value for frequency is displayed in the active entry area.

The new carrier frequency (891.000 000 00 MHz) is shown in both the FREQUENCY area and the active entry area of the display.

Setting the Power Level

1.Press Amplitude.

2.Enter −5 using the numeric keypad and press the dBm softkey.

Amplitude becomes the active function and the preset value for amplitude is displayed in the active entry area.

The new power level (-5.00 dBm) is shown in both the AMPLITUDE area and the active entry area of the display.

Quick Start Guide

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Contents Part No. E4400-90326 Agilent Technologies ESG Family Signal GeneratorsSupersedes April Copyright 1999, 2000 Agilent Technologies Contents Getting Started Signal Generator at a Glance Setting the Carrier Frequency Creating an FM SignalSetting the Power Level Press PresetSetting the FM Rate Setting the FM DeviationRF Output connector Turning On Frequency ModulationConﬁguring a Step Sweep Creating a Step Sweep and a List SweepState ﬁrst level of sweep softkeys is displayedTurning On Continuous Step Sweep RF ON. The swept RF signal is now available atPress Return PressConﬁguring a List Sweep Using Step Sweep Data Data Turning On List Sweep for a Single SweepTurned off You triggered the single sweep in the previous stepCreating an Instrument State Saving and Recalling an Instrument StateRecalling an Instrument State Saving an Instrument StatePress Save followed by Enter −5 using the numeric keypad and press the dBm softkey Setting Up a Digital Modulation in the GSM FormatSelecting the Data Format Setting Up TimeslotThis selects the GSM communications standard Conﬁgure Timeslots has become an active softkeyPress the following softkeys Press the Timeslot Type softkey Press the Normal softkeyThis moves the softkey menu up one level Press Return twice Turning On the GSM Format and the ModulationExploring the User Interface Front Panel Will be returned to normal instrument operation ConnectorAssociated with the event Numeric keypad consists of the digit keys 0 through 9, aComponent of I/Q modulation. This female BNC connector is This connector accepts an externally supplied, analogProvided only on ESG-D and ESG-DP Series Signal Generators Darken in comparison to the text on the displayLCD display provides information on the current instrument Frequency and power capabilitiesTo their adjacent keys are located on the right-hand side DisplayApplications. This female BNC connector is provided only on This hardkey lets you restore any instrument state that youSoftkey or via Scpi command. The maximum input for this Previously saved in a memory register. You can save up toDisplay DisplayCan be viewed by pressing Utility Error Info Multiple error messages occur, only the most recent messageALC circuit is disabled This annunciator appears when a sweep has been initiatedThis annunciator appears when an error message is placed Series Signal GeneratorsView and delete error messages using the Utility menu Modulations that you have enabled are modulating the RFS annunciator appears when the signal generator has RF signal is present at the RF Output connectorGenerated a service request SRQ over the Gpib List or step modeRear Panel Timebase or 1 ppm high stability timebase Option 201 this connector is used for system reset output Output signals for this connectorTTL/CMOS high to TTL/CMOS low edge trigger. With Option UN8 Second output is generated every two seconds indicatingBER Meas END connector outputs a signal that indicates Q OUT connector outputs the analog, quadrature-phaseConnector is present only on instruments with Option UN7 BER Sync Loss connector outputs a signal that indicatesExploring the User Interface