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英国TTi PSA2702手持式频谱分析仪，PSA2701频谱分析仪的产品说明：PSA2702 - 2.7GHzTechnical SpecificationsFREQUENCY MEASUREMENTFrequency SpanFrequency Range: 1 MHz to 1300 MHz (PSA1302)1 MHz to 2700 MHz (PSA2702)Setting Modes: Centre frequency plus Span or Start plus Stop frequenciesMaximum Span: 1299 MHz (PSA1302); 2699 MHz (PSA2702)Minimum Span: 270 kHz or Zero Span with demodulationSet. Resolution: 1 kHz at any frequencySetting Accuracy: Reference Frequency Accuracy for Start Stop & Centre (Zero-Span) frequenciesReference Frequency AccuracyInitial Accuracy: Better than 10ppm at 20 oCStability: Better than 10ppm over 10 oC to 30 oCAgeing: Better than 3ppm per yearPhase NoisePhase Noise: Phase noise at 100kHz offset at 500MHz typically -90dBc/HzResolution BandwidthRBW: Selectable 1 MHz 280 kHz or 15 kHzVideo Filtering: Selectable on/off independently of RBW settingMarkersNo. of Markers: One Two (or None)Resolution: 0.1 kHz at all frequenciesMarker Accuracy: 1/270th of Span +/- 0.1kHz plus reference frequency accuracy.Readout: The frequencies at the marker points and the frequency difference are displayedAMPLITUDE MEASUREMENTAmplitude RangeUnits: Selectable as dBm or dBuVDisplay Range: 85 dB from reference levelMagnification: x2 x5 or x10Reference Level: Selectable as -20 dBm or 0 dBm (87 dBuV or 107 dBuV)Amplitude AccuracyCalibration LevelAccuracy: Better than 1 dB at 10dB below ref. level @ 50MHz (20oC +/- 5oC)Flatness: Better than 1.5 dB over the range 1 MHz to 1300 MHz (PSA1302) 1 MHz to 2700 MHz (PSA2702)Linearity: Better than 1 dB over 50dB from the reference levelNoise Floor: Better than -93 dBm average displayed noise floor (typically -96 dBm) (reference level = -20 dBm RBW = 15 kHz)Distortion and Spurii3rd Order Intermodulation: <-60dBc for two signals at 10dB below reference level (500MHz and 502MHz)Harmonic: <-60dBc at 10dB below reference level (100MHz)1st & 2nd Image: <- 55dBc typically <- 60dBcResidual Spurii: better than 3dB above noise floorMarkersNo. of Markers: One Two (or None)Resolution: 0.1 dBReadout: The level at the marker points and difference are displayed.SWEEPSweep Method:Peak detection for 270 points per sweep. The amplitude and frequency of the peak level found within each sub-span is stored (sub-span = span/270).Sweep Time: Set automatically by Span and RBW.Sweep Modes: Repeat (continuous) or Single ShotTrace Writing Modes: Normal (overwrite) Peak Hold Average (2 to 48).SIGNAL INPUTInput Connector: SMA connector 50 OhmsVSWR: 1.5 : 1 typicalMaximum Level: + 20 dBm (127 dBuV); 15V DCDEMODULATION (Zero Span mode)Demod. Modes: AM or FMDisplay: Carrier amplitude only (horizontal line).Audio Out: Internal Speaker; 30 mW into 32 Ohms mono or stereo headphones adjustable volume 3.5mm jack socketAudio Filter: Switchable 3kHz Low Pass Filter.DISPLAYDisplay Type: 4.3 inch (10.9 cm) backlit TFT LCD 480 x 272 pixels total 16 colours touch screen.Trace Area: 232 x 272 pixels.Graticule: 8.5 x 10 divisions light grey graticule.Displayed Points: 271 points per sweep (peak detected).Live Trace: Dot-joined trace from current sweep.View Trace: Buffered "instance" of the live trace.Reference Trace: Stored trace recalled from a trace file.MEMORY STORAGEInternal Disk: 1.8GB of internal memory.External Storage: USB host interface for removable USB Flash drives.Store Trace: Up to 999 traces can be stored under either default file names or user entered file names. Traces are stored as tables of amplitude versus frequency and can be imported into other programs as well as being recalled to the screen.Recall Trace: Recalls any stored trace to the reference trace of the display.Store Set-up: Up to 999 instrument set-ups can be stored under either default file names or user entered file names. All settings of the instrument are saved.Recall Set-up: Recalls any stored set-up overwriting the existing settings of the instrument.Store Screen: This function copies the whole screen area to memory as a bit-map. Up to 999 screens can be stored under either default file names or user entered file names.Recall Screen: Recalls any stored screen as an image.ConNECTORSRF Input: Standard SMA connector.DC Power: 1.3 mm power socket for external power supply/chargerUSB Host: Standard USB type A connector for connection of USB Flash drives.USB Device: Mini USB connector for connection to a PC.Audio Out: 3.5 mm jack socket for demodulated audio out (accepts mono or stereo plugs).Trigger In/Out: For use with option U01 only.POWER SOURCESBatteryBattery Type: Li-ion 3.7V 3000mA-hrBattery Life: Typically greater than 8 hours continuousRecharge Time: < 3 hours from fully dischargedAuto Off Mode: To conserve battery life the system can be set to automatically switch off after a defined time from the last key press. This can be set between 5 mins and 60 mins (or never).Battery Status: Multi-segment battery status indicator.AC Line Operation/ChargingThe instruments can be operated continuously from mains power using the AC line adaptor provided. This powers and recharges the instrument simultaneously.Voltage Range: 100V to 240V nominal 50Hz/60HzMECHANICALSize: 192mm high x 92mm wide x 49mm deepWeight: 560 grms.Tilt Stand: Built-in tilt stand for bench use which angles the unit at approx. 40 degrees to the horizontal.Stylus: Casing incorporates plug-in stylus.ENVIRonMENTAL AND SAFETYOperating Range: +5oC to + 40oC 20% to 80% RH.Storage Range: -10oC to +50oCEnvironmental: Indoor use at altitudes to 2000m Pollution Degree 2.Electrical Safety: Complies with EN61010-1.EMC: Complies with EN61326.OPTION U01Option U01 is a firmware upgrade that provides additional capabilities as follows:Limit Lines and PatternsLimits: Up to two limits can be displayed together.Lines are defined by dB value Patterns are created as files by PSA-Manager and loaded from memory (999 files maximum).Comparator: Comparison of trace or trace segment with limits (above/below/between/outside) can generate trigger signal pulse or audio alert.Data LoggingData Types: Peak level Centre Level Full Trace or Screen Image.Data Entries: Up to 25000 entries per file (2500 for Images).Trigger Sourcer: Entries can be made in response to ManualTrigger key External Trigger Internal Timer (1sec to 100min per entry) or Limits Comparator.Sweep TriggerSource: External Trigger or Limits Comparator.Offsets and Compensation TablesFixed Offsets: Compensation for external gain or attenuation from -50.0dB to +50.0dB.75 Ohm: Compensation for signals from a 75Ohm source.Tables: Compensation for variations of level with frequency for antennae or transducers. Tables are created as files by PSA-Manager and loaded from memory (999 files maximum).Custom PresetsEnables rapid switching between setups for repetitive testing.View on PCEnables the screen of the spectrum analyzer to be sent to a PC via USB and displayed at a user-defined size.