Agilent Technologies E4438C manual Internal modulation source, External modulation inputs

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Specifications for Analog Modulation

Internal modulation source

Provides modulating signal for FM, AM, pulse and phase modulation signals, and provides LF output source for basic function generator capability.

External modulation inputs

Waveforms	Sine, square, ramp, triangle, pulse, noise

Rate range
Sine	0.1	Hz to 100 kHz
Square, ramp, triangle	0.1	Hz to 20 kHz

Resolution	0.1	Hz

Frequency accuracy	Same as RF reference source

Swept sine mode [frequency, phase continuous]
Operating modes	Triggered or continuous sweeps
Frequency range	0.1	Hz to 100 kHz
Sweep time	1 ms to 65 sec
Resolution	1 ms

Dual sinewave mode
Frequency range	0.1	Hz to 100 kHz
Amplitude ratio	0 to 100%
Amplitude ratio resolution	0.1%

LF audio out mode	0 to 2.5 Vpeak into 50 Ω
Amplitude	0 to 2.5 Vpeak into 50 Ω
Output impedance	50 Ω nominal

Modulation types
Ext 1	FM, FM, AM, pulse, and burst envelope
Ext 2	FM, FM, AM, and pulse

LO/HI annunciator [100 Hz to 10 MHz BW, AC coupled inputs only]. Activated when input level error exceeds 3% [nominal].

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Contents Agilent E4438C ESG Vector Signal Generator Table of Contents Introduction E4438C ESG Vector signal generator DefinitionsKey standard features Optional features Key FeaturesRF reference input requirements Specifications for Frequency and Power CharacteristicsFrequency Sweep modes Internal reference oscillatorLevel range with Attenuator Hold active Output powerPower Level resolutionLevel switching speed Level accuracy with ALC onOption ±0.15 dB ±0.25 dB Repeatability Repeatability and linearityAmplitude dBm Jitter in seconds1, 7 Spectral puritySubharmonics Jitter in µUI1, 7With Option 1E5 Characteristic SSB phase noiseCarrier frequency accuracy relative to CW in DCFM3 Specifications for Analog ModulationResolution FM using external inputs 1 orStandard Specifications for Analog ModulationsPhase modulation 1 Amplitude modulation 1Pulse modulation Wideband AMExternal modulation inputs Internal modulation sourceMinimum burst repetition frequency1 Input voltageOn/off ratio1 Rise/fall time1Input impedance Ω or 600 Ω Full scale input Specifications for I/Q CharacteristicsModulation bandwidth InputsAdjustments Baseband generatorBaseband outputs Baseband spectral purity ClockBaseband filters Reconstruction filter fixedFIR filter Symbol rate Maximum deviationSymbol rate Frame trigger delay controlSpecifications for Signal Personality Characteristics Data typesInternal burst shape control Spurious emissions Cdma2000Enhanced multitone1 802.11a spectral mask typical performance Software settings Source settings89641A settings WlanReal-time mode Custom digitally modulated signals real-time mode 1Custom modulation Multiframe output data generation Alternate time slot power level controlDownlink error reporting Errors in coded channelsPayload bit error count/rate for raw BER Contains residual bit errors and bit error countGSM/EDGE base station bit error rate test Bert Supported data patterns Bit error rate BER analyzerFeatures Clock rateOperating characteristics Transit case Accessories Inputs and outputsGeneral Characteristics Allows communication with compatible devices Panel SMB connectorsExternal 1 input External 2 inputFalling edge is used to clock the data signal Opposite in polarity 180 degrees out of phaseRelocated to rear panel SMB connectors Symbol sync inputFile transfer to volatile memory LAN connectorWith Option UN7 With OptionRS-232 connector Auxiliary I/O connectorMating connector Ordering Information1 Frequency optionsPerformance enhancement options Application literature E4438C ESG signal generation firmware personalitiesE4438C ESG Signal Studio software personalities Related LiteraturePage See the ESG Web page for the latest information Agilent Open