Agilent Technologies E4438C manual Wideband AM, Pulse modulation

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Specifications for Analog Modulation

Wideband AM

Rates [1 dB bandwidth] 1

 

 

ALC on

(400 Hz to 40 MHz)

 

ALC off

(DC to 40 MHz)

 

 

 

Wideband AM using external I input only

 

Sensitivity

0.5 V = 100%

 

Input impedance

50 , nominal

 

 

 

Pulse modulation

On/off ratio 1

 

 

4 GHz

> 80 dB

 

> 4 GHz

(> 64 dB)

 

 

 

 

Rise/fall times1

(150 ns)

 

Minimum width1

 

 

ALC on

(2 µs)

 

ALC off

(0.4 µs)

 

 

 

Pulse repetition frequency1

 

ALC on

(10 Hz to 250 kHz)

 

ALC off

(DC to 1.0 MHz)

Level accuracy 1, 2 [relative to CW at 4 dBm standard, 7.5 dBm Option UNB, 4.5 dBm Option 506]

(< ±1 dB)

Pulse modulation using external inputs

Input voltage

 

 

RF on

> +0.5 V, nominal

RF off

< +0.5 V, nominal

Input impedance

50 , nominal

 

 

 

Internal pulse generator

 

 

Square wave rate

0.1 Hz to 20 kHz

Pulse

 

 

Period

8

µs to 30 seconds

Width

4

µs to 30 seconds

Resolution

2

µs

 

 

 

1.Parentheses denote typical performance.

2.With ALC off, specifications apply after the execution of power search. With ALC on, specifications apply for pulse repetition rates 10 kHz and pulse widths 5 µs.

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Contents Agilent E4438C ESG Vector Signal Generator Table of Contents E4438C ESG Vector signal generator Definitions IntroductionKey Features Key standard features Optional featuresSweep modes Internal reference oscillator Specifications for Frequency and Power CharacteristicsFrequency RF reference input requirementsLevel resolution Output powerPower Level range with Attenuator Hold activeOption ±0.15 dB ±0.25 dB Level switching speedLevel accuracy with ALC on Repeatability and linearity RepeatabilityAmplitude dBm Jitter in µUI1, 7 Spectral puritySubharmonics Jitter in seconds1, 7Characteristic SSB phase noise With Option 1E5FM using external inputs 1 or Specifications for Analog ModulationResolution Carrier frequency accuracy relative to CW in DCFM3Amplitude modulation 1 Specifications for Analog ModulationsPhase modulation 1 StandardWideband AM Pulse modulationInternal modulation source External modulation inputsRise/fall time1 Input voltageOn/off ratio1 Minimum burst repetition frequency1Inputs Specifications for I/Q CharacteristicsModulation bandwidth Input impedance Ω or 600 Ω Full scale inputBaseband outputs AdjustmentsBaseband generator Reconstruction filter fixed ClockBaseband filters Baseband spectral purityFrame trigger delay control Symbol rate Maximum deviationSymbol rate FIR filterInternal burst shape control Specifications for Signal Personality CharacteristicsData types Cdma2000 Spurious emissionsEnhanced multitone1 Wlan Software settings Source settings89641A settings 802.11a spectral mask typical performanceCustom modulation Real-time modeCustom digitally modulated signals real-time mode 1 Alternate time slot power level control Multiframe output data generationContains residual bit errors and bit error count Errors in coded channelsPayload bit error count/rate for raw BER Downlink error reportingGSM/EDGE base station bit error rate test Bert Clock rate Bit error rate BER analyzerFeatures Supported data patternsOperating characteristics Accessories Inputs and outputs Transit caseGeneral Characteristics External 2 input Panel SMB connectorsExternal 1 input Allows communication with compatible devicesSymbol sync input Opposite in polarity 180 degrees out of phaseRelocated to rear panel SMB connectors Falling edge is used to clock the data signalWith Option LAN connectorWith Option UN7 File transfer to volatile memoryMating connector RS-232 connectorAuxiliary I/O connector Performance enhancement options Ordering Information1Frequency options Related Literature E4438C ESG signal generation firmware personalitiesE4438C ESG Signal Studio software personalities Application literaturePage Agilent Open See the ESG Web page for the latest information