E8257N PSG Analog Sweep Generator - Keysight

Keysight TechnologiesPSG Analog Sweep GeneratorE8257NNSN 6625-01–569–7669US Navy Contract No. N00104-15-D-D004Data Sheet

2 Keysight PSG Analog Sweep Generator E8257N - Data SheetTable of ContentsSpecifications. 4Frequency. 4Step (digital) sweep. 5Ramp (analog) sweep. 6Output. 7Spectral purity. 10Frequency modulation.14Phase modulation.15Amplitude modulation.16External modulation inputs.17Internal modulation source.16Pulse modulation.18Internal pulse generator.19Simultaneous modulation. 20Remote programming. 20General specifications. 21Input/Output Descriptions. 22Front panel connectors. 22Rear panel connectors. 23Options, Accessories, and Related Products. 24Related Keysight Literature. 25Web Resources. 25

03 Keysight PSG Analog Sweep Generator E8257N - Data SheetDefinitions and ConditionsThe Keysight E8257N is a fully-synthesized signal generator with high outputpower, low phase noise, and optional ramp sweep capability.Specifications apply over a 0 to 50 C range, unless otherwise stated, and applyafter a 45 minute warm-up time. Supplemental characteristics, denoted astypical, nominal, or measured, provide additional (non-warranted) informationat 25 C, which may be useful in the application of the product.Unless otherwise noted, this data sheet applies to units with serial numbersending with 55060000 or greater.Specifications (spec): Represents warranted performance for instruments witha current calibration.Typical (typ): Represents characteristic performance which is non-warranted;describes performance that will be met by a minimum of 80% of all products.Nominal (nom): Represents characteristic performance which is non-warranted.Represents the value of a parameter that is most likely to occur; the expectedmean or mode of all instruments at room temperature (approximately 25 ºC).Measured: Represents characteristic performance which is non-warranted.Represents the value of a parameter measured on an instrument during designverification.

04 Keysight PSG Analog Sweep Generator E8257N - Data SheetFrequency and Time SpecificationsFrequencyrange 1Standard10 MHz to 40 GHzOption 340250 kHz to 40 GHzOption 550250 kHz to 50 GHzResolutionCW0.001 HzAll sweep modes0.01 Hz2CW switching speed3, 4, 5 11 ms (typ)7 ms (nom)Phase offsetAdjustable in nominal 0.1 incrementsFrequency bandsFrequency rangeN61 (Option 340 or 550)250 kHz to 10 MHz1/8110 MHz to 250 MHz1/82 250 to 500 MHz1/163 500 MHz to 1 GHz1/84 1 to 2 GHz1/45 2 to 3.2 GHz1/26 3.2 to 10 GHz17 10 to 20 GHz28 20 to 40 GHz49 (Option 550) 40 to 50 GHz8Accuracy [(time since last adjustment x aging rate) temperature effects line voltageeffects calibration accuracy]Internal timebase reference oscillator (OCXO)StandardOption UNXAging rate 1 x 10 /hr @ 25 C 5 C after 1 hr 3 x 10–8 /yr or 2.5 x 10–10 /daywarm upafter 30 daysTemperature effects 2.0 x 10–6 from 0 to 50 C 4.5 x 10–9 from 0 to 55 C (typ)Line voltage effects (typ) 2.0 x 10–10 for 10% change 2.0 x 10–10 for 10% change–9External referenceFrequency10 MHz onlyLock range 1.0 ppmReference outputFrequency10 MHzAmplitude 4 dBm into 50 Ω load (typ)External reference inputAmplitude5 dBm 5 dB 7Input impedance50 Ω (nom)1.2.3.4.5.6.7.Operational, but unspecified, down to 100 kHz except where noted.In ramp sweep mode, resolution is limited with narrow spans and slow sweep speeds. Refer to ramp sweep specifications for more information.Time from GPIB trigger to frequency within 0.1 ppm of final frequency above 250 MHz or within 100 Hz below 250 MHz.Add 12 ms (typical) when switching from greater than 3.2 GHz to less than 3.2 GHz.With Option 1EH low band harmonic filters off. With the 1EH filters turned on, add 4 ms.N is a factor used to help define certain specifications within the document.To optimize phase noise use 5 dBm 2 dB.

05 Keysight PSG Analog Sweep Generator E8257N - Data SheetStep (digital) sweepOperating modesStandard and Option 340Step sweep of frequency or amplitude or both (start to stop)Option 340 onlyList sweep of frequency or amplitude or both (arbitrary list)Sweep rangeFrequency sweepWithin instrument frequency rangeAmplitude sweepWithin attenuator hold range (see “Output” section)Dwell time1 ms to 60 sNumber of pointsStandardOption 340Step sweep2 to 655352 to 65535List sweepTriggering2 to 1601 per tableAuto, external, single, or GPIBSettling timeFrequency 9 ms (typ) 1Amplitude 5 ms (typ)1. 19 ms (typ) when stepping from greater than 3.2 GHz to less than 3.2 GHz.

06 Keysight PSG Analog Sweep Generator E8257N - Data SheetRamp (analog) sweep 1Operating modes–– Synthesized frequency sweep (start/stop), (center/span), (swept CW)–– Power (amplitude) sweep (start/stop)–– Manual sweep–– RPG control between start and stop frequencies–– Alternate sweep–– Alternates successive sweeps between current and stored statesSweep span rangeSettable from minimum 2 to full rangeMaximum sweep rateStart frequencyMaximum sweep rateMax span for 100 ms sweepOption 340 only250 kHz to 0.5 GHz25 MHz/ms2.5 GHzStandard and Option 34010 MHz to 0.5 GHz25 MHz/ms2.5 GHz0.5 to 1 GHz50 MHz/ms5 GHz1 to 2 GHz100 MHz/ms10 GHz2 to 3.2 GHz200 MHz/ms20 GHz 3.2 GHz400 MHz/ms40 GHzFrequency accuracy(Option 340 only) 0.05% of span timebase (at 100 ms sweep time, for sweep spans less than maximumvalues given above). Accuracy improves proportionally as sweep time increases 3Frequency resolutionFor sweep width 20 GHz 0.1%For sweep width 20 GHz 0.2%Sweep time (forward sweep, not including band switch and retrace intervals)Manual modeSettable 10 ms to 200 secondsResolution1 msAuto modeSet to minimum value determined by maximum sweep rate and 8757D settingTriggeringAuto, external, single, or GPIBMarkers10 independent continuously variable frequency markersDisplayZ-axis intensity or RF amplitude pulseFunctionsM1 to center, M1/M2 to start/stop, marker deltaTwo-tone (master/slave) measurements 4(Option 340)Two PSGs can synchronously track each other, with independent control of start/stopfrequenciesNetwork analyzer compatibilityOption 3401.2.3.4.5.Keysight 8757D scalar network analyzer. Also useable with Keysight 8757A/C/E scalarnetwork analyzers for making basic swept measurements. 5During ramp sweep operation, AM, FM, phase modulation, and pulse modulation are useable but performance is not guaranteed.Minimum settable sweep span is proportional to carrier frequency and sweep time. Actual sweep span may be slightly different than desiredsetting for spans less than [0.00004% of carrier frequency or 140 Hz] x [sweep time in seconds]. Actual span will always be displayedcorrectly.Typical accuracy for sweep times 100 ms can be calculated from the equation: [(0.005% of span)/(sweep time in seconds)] timebase.Accuracy is not specified for sweep times 100 ms.For master/slave operation use Keysight part number 8120–8806 master/slave interface cable.GPIB system interface is not supported with 8757A/C/E, only with 8757D. As a result, some features of the 8757A/C/E, such as frequencydisplay, pass-through mode, and alternate sweep, do not function with the PSG signal generators.

07 Keysight PSG Analog Sweep Generator E8257N - Data SheetOutputMinimum settable output powerStandard250 kHz to 10 MHz10 MHz to 40 GHz–105 dBmOption 340Option 550–135 dBm–110 dBm–135 dBm–110 dBm 40 to 50 GHz–110 dBmMaximum output power (dBm)Spec (Typ)1, 2StandardStandardOption 1EU10 to 250 MHz (Option 1EH filters on) 10 11 ( 14) 250 MHz to 2 GHz (Option 1EH filters on) 10 13 ( 15)250 kHz to 10 MHz (Option 340) 10 11 ( 14) 10 to 60 MHz 10 13 ( 16) 10 18 ( 19)60 to 250 MHz 10 20 ( 22) 3.2 to 17 GHz 10 17 ( 20) 17 to 18 GHz 10 14 ( 17) 18 to 37 GHz 7 14 ( 17) 37 to 40 GHz 7 12 ( 16) 250 MHz to 3.2 GHz3Option 550StandardOption 1EU10 to 250 MHz (Opt 1EH filters on) 5 10 ( 13) 250 MHz to 2 GHz (Opt 1EH filters on) 5 12 ( 14)250 kHz to 10 MHz 5 10 ( 13) 10 to 60 MHz 5 12 ( 15) 5 17 ( 18)60 to 250 MHz 5 19 ( 22) 3.2 to 10 GHz 4 13 ( 20) 10 to 20 GHz 4 13 ( 16) 20 to 30 GHz 3 9 ( 16) 30 to 50 GHz 3 9 ( 12) 250 MHz to 3.2 GHz3E8257N with Options 550 and 1EUE8257N with Option 1EU3026Power [dBm]Power [dBm]2824222018162520151050510152025Frequency [GHz]30354000102030Frequency [GHz]4050Maximum output power (measured)1.2.3.Maximum power specifications are warranted from 15 to 35 C, and are typical from 0 to 15 C. Maximum power over the 35 to 55 C rangetypically degrades less than 2 dB.With Option 1EH low-pass filters below 2 GHz switched off, unless otherwise specified.With Option 1EH low-pass filters below 2 GHz switched off. With filters on, this specification applies above 2 GHz.

08 Keysight PSG Analog Sweep Generator E8257N - Data SheetStep attenuator 1Standard0 dB and 5 dB to 115 dB in 10 dB stepsWith Optimize S/N On (Opt 1EU)0 dB to 115 dB in 5 dB stepsOption 5500 dB to 90 dB in 10 dB stepsAttenuator hold range minimumFrom –20 dBm to maximum specified output power with step attenuator in 0 dB position; can be offset using attenuator2Amplitude switching speedALC On 6 ms (typ) 3ALC Off 10 ms (typ) (not including power search) 4Level accuracy 5 (dB)StandardOption 1EUStandard 10 to –90 dBm 20 to –90 dBm –90 to –105 dBm 1.5 dB 1.5 dBAdditional 0.2 dB/10 dB step250 kHz to 10 MHz (Option 340)2 10 MHz to 20 GHz 1.5 dB 1.5 dBAdditional 0.2 dB/10 dB step 20 to 40 GHz 2.0 dB 2.0 dBAdditional 0.2 dB/10 dB step –90 to –105 dBmOption 550 5 to –90 dBm 19 to –90 dBm6 1.5 dB 1.5 dBAdditional 0.2 dB/10 dB step 2 GHz to 20 GHz 1.5 dB 1.5 dBAdditional 0.2 dB/10 dB stepAdditional 0.2 dB/10 dB step250 kHz to 2 GHz 20 GHz to 40 GHz 2.0 dB 2.0 dB 40 GHz to 50 GHz 2.5 dB 2.5 dBFlatness 1.5 dB measured at 0 dBmE8257N at -110 dBmE8257N with Option 550 at -90 dBm0.2Accuracy (dB)Accuracy (dB)0.40-0.2-0.40102030Frequency [GHz]402.521.510.50-0.5-1-1.5-20102030Frequency [GHz]4050Level accuracy (measured)1.2.3.4.5.6.The step attenuator provides coarse power attenuation to achieve low power levels. Fine power level adjustment is provided by the ALC(automatic level control) within the attenuator hold range.With attenuator in auto mode. Optimize S/N mode provides improved signal/noise performance and is included with Option 1EU models.Specs in the following sections (such as level accuracy, spectral purity, modulation, etc.) are only tested with optimize S/N mode turned off.To within 0.1 dB of final amplitude within one attenuator range.To within 0.5 dB of final amplitude within one attenuator range. Add up to 50 ms when using power search.Specifications apply in CW and list/step sweep modes over the 15 to 35 ºC temperature range with the ALC on. Degradation outside thisrange, for power levels –10 dBm, is typically 0.3 dB. In ramp sweep mode, specifications are typical. For instruments with Type-Nconnectors, specifications are degraded typically 0.2 dB above 18 GHz. Specifications do not apply above the maximum specified power.When Option UNX low phase noise mode is on, specifications below 250 MHz apply only when Option 1EH low-pass filters below 2 GHz areon. With Option 1EH low-pass filters below 2 GHz off, accuracy is typically 2 dB.