Spectrum Analyzers

YSA-P045-DC Handheld Real-Time Spectrum Analyzer

Name: YSA-P045-DC Handheld Real-Time Spectrum Analyzer
Brand: XGY Tek

DC to 4.5 GHz Handheld Real-Time Analysis

YSA-P045-DC includes the Option 16 DC extension, with 50 MHz standard analysis bandwidth and an optional 100 MHz upgrade in a touchscreen handheld instrument.

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YSA-P045-DC Handheld Real-Time Spectrum Analyzer

Frequency range: 0 Hz to 4.5 GHz
Sensitivity: 1 GHz DANL -168 dBm/Hz
Display: 10.1-inch multi-touch display
Weight: 1.5 kg

Overview

YSA-P045-DC covers 0 Hz to 4.5 GHz with a superheterodyne receiver, preselector filters and a full-band preamplifier. Option 16 is included; analysis bandwidth is 50 MHz standard or 100 MHz with Option 50.

SAStudio4 brings spectrum, IQ, power detection, phase-noise and mapping workflows to the 10.1-inch multi-touch display. Battery operation and external power-bank support suit measurements away from the bench.

Product & Measurement Gallery

Standard Spectrum Analysis
Provides spectrum sweep, channel power, OBW, ACPR, IM3 and SEM. Spectrum recording and playback are supported, together with signal tracking, a peak table and amplitude correction.
IQ Streaming
Supports 50 MHz analysis bandwidth, or 100 MHz with Option 50, with IQ acquisition through multiple trigger methods. Displays IQ time-domain waveforms, spectrum and spectrogram views, with AM/FM demodulation and digital down conversion (DDC).
Power Detection Analysis
Detects and analyzes time-domain signals within the analysis bandwidth for in-band power-versus-time relationships, including pulse signal measurements.
Real-Time Spectrum Analysis
A high-speed FPGA-based FFT engine provides strictly gapless and overlap-free FFT processing for real-time monitoring across the full analysis bandwidth.
Basic Vector Modulation Analysis (Option 71)
Supports 2ASK, 2FSK, 4FSK, GMSK, BPSK, QPSK, 8PSK, 16QAM, 64QAM, 128QAM and 256QAM signals. Additional modulation and rate details are listed in the specification tables.
Harmonic Analysis
Detects and measures up to 10 harmonic components, including harmonic peaks, harmonic channel power and total harmonic distortion.
Phase Noise Measurement
Supports frequency offsets from 1 Hz to 10 MHz for carrier phase-stability evaluation. Automatic carrier search locates the target carrier without manual adjustment.
Pulse Analysis (Option 72)
Measures pulse widths from 64 ns at standard bandwidth, or from 32 ns with Option 50. Displays Top Level, Base Level, Top/Base, Droop, OverShoot, Ripple, Rise/Fall Time, Rise/Fall Edge, Width, PRI and Duty Cycle.
Mapping
Integrates GPS positioning data into heat maps and other visual charts, showing Channel Power, Occupied BW, Time, latitude/longitude, Altitude, Pixel Position and Azimuth within an area. Supports radio monitoring and interference analysis workflows.
EMI Pre-Compliance Measurement (Option 74)
Provides CISPR 16-1-1 compliant EMI measurement capabilities. Supports 6 dB EMI filters of 200 Hz, 9 kHz, 120 kHz and 1 MHz; Peak, Quasi-Peak, Average and RMS detectors; limit-line comparison, signal-list analysis and test-report export for radiated and conducted pre-compliance measurements.
Channel Power
Occupied Bandwidth (OBW)
Adjacent Channel Power Ratio (ACPR)
IM3
SEM
AM Demodulation
FM Demodulation
Multiple Unit Display
Antenna Factor
Amplitude Offset
Signal Track
Peak Table
Data Record and Playback
Tracking Generator (Option 60)

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Additional product details

The YSA-P045-DC retains the documented 50 MHz standard / 100 MHz Option 50 analysis-bandwidth choices for the handheld platform.

The YSA-P045-DC supports GNSS frequency calibration, SCPI remote control and battery operation up to 2.5 hours, and a 4.5 GHz tracking generator is available as Option 60.

Key Capabilities & Applications

Start at DC

The included Option 16 provides the 0 Hz start frequency. This extension does not extend the test-frequency ranges specified in the RF performance tables.

Capture and analyze signals

Standard workflows include real-time spectrum analysis and IQ streaming. Option 50 expands analysis bandwidth to 100 MHz; vector modulation, pulse analysis and EMI pre-compliance require their respective software options.

Use handheld or remote control

A 1.5 kg instrument with a 10.1-inch display supports about 2.5 hours of typical battery operation. SCPI, USB and Ethernet provide remote-control and data connections.

Common applications

DC-to-RF spectrum monitoring
EMC pre-compliance testing
Radar and wireless signal analysis
Laboratory RF measurements

Technical Specifications

Parameter	Specification
Frequency range	0 Hz to 4.5 GHz
Receiver and front end	Option 16 included; high-performance superheterodyne; up to 14 preselector filter bands; full-band preamplifier
Sensitivity	1 GHz DANL -168 dBm/Hz; SSB phase noise in spectrum sweep mode < -110 dBc/Hz at 1 GHz carrier, 10 kHz offset
Measurement performance	SSB phase noise in phase noise measurement mode < -124 dBc/Hz (typ.) at 1 GHz carrier, 10 kHz offset; sweep speed up to 1 THz/s at RBW = 250 kHz
Control and field operation	GNSS frequency calibration; SCPI remote control; battery up to 2.5 hours
Display	10.1-inch multi-touch display
Weight	1.5 kg

Detailed performance and interface tables (23)

Standard spectrum analysis (5 rows)

Standard spectrum analysis
Parameter / condition	YSA-P045-DC
Detectors	PosPeak, NegPeak, Sample, Average, RMS, RawFrames, MaxPower
Resolution bandwidth	0.1 Hz to 10 MHz
Video bandwidth	0.1 Hz to 10 MHz
Data charts	SAStudio4 spectrum, spectrogram and historical trace
Measurements	Channel power, OBW, X dB bandwidth, adjacent channel power ratio, IM3

Sweep speed (3 rows)

Sweep speed
Parameter / condition	YSA-P045-DC
Resolution bandwidth = 250 kHz; FPGA processing; B-Nuttall	≥ 1 THz/s
Resolution bandwidth = 25 kHz; FPGA processing; Kaiser	≥ 290 GHz/s
Resolution bandwidth = 1 kHz; CPU processing; B-Nuttall	≥ 2 GHz/s

IQ recording (6 rows)

IQ recording
Parameter / condition	YSA-P045-DC
Continuous recording bandwidth	Maximum 12.5 MHz
Burst recording bandwidth	Maximum 50 MHz standard; 100 MHz with Option 50
Built-in memory depth	128 Mbytes
IQ sample rate	Maximum 62.5 MSPS standard; 125 MSPS with Option 50
Decimation factors	1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048
External trigger response	Maximum frequency response: 500 times/s

Detection analysis (3 rows)

Detection analysis
Parameter / condition	YSA-P045-DC
Minimum time resolution	16 ns standard; 8 ns with Option 50
Maximum analysis bandwidth	50 MHz standard; 100 MHz with Option 50
Detectors	PosPeak, NegPeak, Sample, Average, RMS, MaxPower

Real-time spectrum analysis (17 rows)

Real-time spectrum analysis
Parameter / condition	YSA-P045-DC
FFT implementation	FPGA FFT engine; frame compression and trace detection supported; no missing samples between FFT frames
FFT frame update-rate formula	10^9 ns / (N × D × minimum time resolution)
POI formula	2 × N × D × minimum time resolution
FFT points, N	4096, 2048, 1024, 512, 256, 128, 64, 32
Decimation factor, D	1, 2, 4, 8…
N = 4096, D = 1; typical settings
FFT refresh rate, standard	15,258 times/s
FFT refresh rate, Option 50	30,517 times/s
100% POI, standard	131.072 µs
100% POI, Option 50	65.536 µs
N = 32, D = 1; typical settings
FFT refresh rate, standard	1,953,125 times/s
FFT refresh rate, Option 50	3,906,250 times/s
100% POI, standard	1.024 µs
100% POI, Option 50	0.512 µs
Analysis settings
Maximum analysis bandwidth	50 MHz standard; 100 MHz with Option 50
Window functions	B-Nuttall, Flat-top, LowSideLobe, Rectangle, Kaiser
Resolution bandwidth settings	≥ 12 grades
Amplitude resolution	0.5 dB

General and interfaces (24 rows)

General and interfaces
Parameter / condition	YSA-P045-DC
RF input	N (F), 50 Ω
RF output	N (F), 50 Ω
Power input	USB PD (65 W)
USB ports	USB 3.0 Type-C × 1; USB 2.0 Type-C × 1; USB 2.0 Type-A × 1
Ethernet	RJ45, 1000 Mbps
Video / audio	Micro HDMI × 1 (extended-display support); 3.5 mm headphone port × 1
External reference-clock input	MMCX (F), 10 MHz; amplitude ≥ 1.5 Vpp; impedance 330 Ω
Reference-clock output	MMCX (F), 100 MHz, 3.3 V CMOS; programmable on/off
External trigger input	MMCX (F), 3.3 V CMOS; high impedance
Trigger output	MMCX (F), 3.3 V CMOS
External antenna input	MMCX (F)
Analog IF output	MMCX (F); -25 dBm maximum output power; 50 Ω; 312.5 MHz ± 50 MHz
Display	IPS LCD, 1280 × 800; 10.1-inch multi-touch screen
RAM / EMMC storage	4 GB / 32 GB
Power consumption	32 W (typ.)
Battery life	About 2.5 hours (typ.); external power-bank supply supported
Size (D × W × H)	260 × 185 × 46 mm
Weight	1.5 kg
Built-in GNSS 1PPS accuracy	± 100 ns; external antenna only
Operating temperature (ambient)	0 to 50 °C
Storage temperature (ambient)	-20 to +70 °C
Operating relative humidity, ambient 0 to 40 °C	5 to 75%
Operating relative humidity, ambient > 40 °C	5 to 45%
Packaging and accessories	Protected YSA-P045-DC main unit × 1; power adapter × 1; power cord × 1; lanyard × 1

Phase noise measurement (3 rows)

Phase noise measurement
Parameter / condition	YSA-P045-DC
Minimum frequency offset	1 Hz
Maximum measurement frequency offset	10 MHz
Trace smoothing	Supported

SSB phase noise — phase noise measurement mode (12 rows)

SSB phase noise — phase noise measurement mode
Parameter / condition	YSA-P045-DC
Carrier 1 GHz — guaranteed / typical
100 Hz offset	-90 / -94 dBc/Hz
1 kHz offset	-113 / -117 dBc/Hz
10 kHz offset	-120 / -124 dBc/Hz
100 kHz offset	-126 / -129 dBc/Hz
1 MHz offset	-136 / -139 dBc/Hz
10 MHz offset	-140 / -143 dBc/Hz
Carrier 4.5 GHz — guaranteed / typical
100 Hz offset	-80 / -83 dBc/Hz
1 kHz offset	-102 / -105 dBc/Hz
10 kHz offset	-112 / -115 dBc/Hz
100 kHz offset	-114 / -117 dBc/Hz
1 MHz offset	-125 / -128 dBc/Hz
10 MHz offset	-137 / -140 dBc/Hz

Pulse detection (Option 72) (2 rows)

Pulse detection (Option 72)
Parameter / condition	YSA-P045-DC
Minimum pulse width	64 ns standard bandwidth; 32 ns with Option 50
Measurement parameters	Top Level, Base Level, Top/Base, Droop, OverShoot, Ripple, Rise Time, Rise Edge, Fall Time, Fall Edge, Width, PRI, Duty Cycle

AM demodulation (5 rows)

AM demodulation
Parameter / condition	YSA-P045-DC
Measurement parameters	Modulation depth, carrier power, modulation rate, signal-to-noise ratio, RMS power, total harmonic distortion, etc.
Modulation-rate test range	20 Hz to 10 MHz
Modulation-rate accuracy, rate < 1 kHz	< 1 Hz
Modulation-rate accuracy, rate ≥ 1 kHz	< 0.1%
Modulation-depth test range and accuracy	5% to 95%; ± 5% (nominal)

FM demodulation (5 rows)

FM demodulation
Parameter / condition	YSA-P045-DC
Measurement parameters	Modulation frequency offset, carrier power, modulation rate, SINAD, signal-to-noise ratio, RMS power, total harmonic distortion, etc.
Modulation-rate test range	20 Hz to 2 MHz
Modulation-rate accuracy, rate < 1 kHz	< 1 Hz
Modulation-rate accuracy, rate ≥ 1 kHz	< 0.1%
Frequency-offset test range and accuracy	1 kHz to 10 MHz; ± 6% (nominal)

Basic vector modulation analysis (Option 71) (12 rows)

Basic vector modulation analysis (Option 71)
Parameter / condition	YSA-P045-DC
ASK	2ASK
FSK	2FSK, 4FSK
MSK	GMSK
PSK	BPSK, QPSK, 8PSK
QAM	16QAM, 32QAM, 64QAM, 128QAM, 256QAM
Symbol length, 128QAM and 256QAM	4000
Symbol length, other modulation types	2000
Symbol rate	(1/64 to 1/4) × sample rate; ≤ 32.5 MSPS
Filter	Root raised cosine
Filter roll-off factor	0.01 to 0.99
Displays	Spectrum, constellation, eye diagrams, measurement results
Measurements	EVM, amplitude error, phase error, frequency error, signal-to-noise ratio, part of the bitstream

Tracking generator (Option 60) (6 rows)

Tracking generator (Option 60)
Parameter / condition	YSA-P045-DC
Frequency range	1 MHz to 4.5 GHz
Modes	FixedPoint, FreqSweep, PowerSweep, Tracking Generator
Frequency resolution	10 Hz
Power resolution	0.25 dB
Power level	-20 to 0 dBm
Power-level accuracy	± 2 dB

EMI pre-compliance measurement (Option 74) (6 rows)

EMI pre-compliance measurement (Option 74)
Parameter / condition	YSA-P045-DC
EMI filter, −6 dB bandwidth	200 Hz, 9 kHz, 120 kHz, 1 MHz
Detectors	Peak, Average, RMS, Quasi-Peak (CISPR 16-1-1 compliant)
Measurement-time setting range	0.1 to 10 s
Limit-line standards	FCC Part 15, EN550xx, user defined
Report output	Signal list
Frequency axis	Linear and logarithmic

Specification conditions (4 rows)

Specification conditions
Parameter / condition	YSA-P045-DC
Warm-up	Start up and warm up for 10 minutes
Ambient temperature	25 °C
Typical and nominal values	Not guaranteed; measurement uncertainty is not included
Specification changes	May vary with hardware and software versions without prior notice

Options (9 rows)

Options
Parameter / condition	YSA-P045-DC
Option 05	Internal high-precision GNSS; built-in hardware
Option 16 — included	0 Hz start frequency; built-in hardware
Option 50	100 MHz analysis bandwidth; built-in hardware
Option 60	4.5 GHz tracking generator; built-in hardware
Option 71	Basic vector modulation analysis; software
Option 72	Pulse analysis; software
Option 74	EMI pre-compliance measurement; software
Option 80	4-year warranty; service option
Option 81	5-year warranty; service option

Frequency (6 rows)

Frequency
Parameter / condition	YSA-P045-DC
Frequency range	0 Hz to 4.5 GHz
Reference clock	Internal or external; manual correction of GNSS calibration available
Frequency accuracy	≤ 0.5 ppm; manual correction available
Aging stability	≤ 1 ppm/year
Temperature stability	≤ 1 ppm
Built-in GNSS 1PPS accuracy	± 100 ns

Option 16 is included in this DC version. The 0 Hz start-frequency extension does not extend the stated test-frequency ranges of the performance tables.

SSB Phase Noise — Spectrum Sweep Mode (10 rows)

SSB Phase Noise — Spectrum Sweep Mode
Parameter / condition	YSA-P045-DC
Carrier 1 GHz — guaranteed / typical
100 Hz offset	-85 / -88 dBc/Hz
1 kHz offset	-97 / -99 dBc/Hz
10 kHz offset	-110 / -112 dBc/Hz
100 kHz offset	-114 / -115 dBc/Hz
1 MHz offset	-131 / -132 dBc/Hz
Carrier 4.5 GHz — guaranteed / typical
100 Hz offset	-78 / -81 dBc/Hz
1 kHz offset	-90 / -93 dBc/Hz
10 kHz offset	-103 / -106 dBc/Hz
100 kHz offset	-104 / -107 dBc/Hz
1 MHz offset	-119 / -122 dBc/Hz

Residual Response (4 rows)

Residual Response
Parameter / condition	YSA-P045-DC
Reference level 0 dBm; RBW = 1 kHz; guaranteed / typical
9 kHz to 100 MHz	-90 / -94 dBm
100 MHz to 4.5 GHz	-90 / -95 dBm
Reference level −50 dBm; RBW = 1 kHz; guaranteed / typical
9 kHz to 100 MHz	-115 / -117 dBm
100 MHz to 4.5 GHz	-120 / -128 dBm

Rejection and Spurious Response (3 rows)

Rejection and Spurious Response
Parameter / condition	YSA-P045-DC
Image rejection	> 90 dBc; > 95 dBc (typ.)
IF rejection	> 90 dBc; > 95 dBc (typ.)
Local-oscillator-related spurious	< −65 dBc; center frequency ± (N/M) × 125 MHz, N, M = 1, 2, 3, 4, 5…

IIP3 / IIP2 (6 rows)

IIP3 / IIP2
Parameter / condition	YSA-P045-DC
Reference level 20 dBm; values are IIP3 / IIP2
Carrier 1 GHz	42 / 80 dBm
Carrier 4.5 GHz	37 / 80 dBm
Reference level 0 dBm; values are IIP3 / IIP2
Carrier 1 GHz	23 / 80 dBm
Carrier 4.5 GHz	22 / 80 dBm
Reference level −20 dBm; values are IIP3 / IIP2
Carrier 1 GHz	3 / 60 dBm
Carrier 4.5 GHz	3 / 45 dBm

Amplitude (11 rows)

Amplitude
Parameter / condition	YSA-P045-DC
Maximum input power (CW), 50 MHz to maximum frequency; preamplifier off	23 dBm
Maximum input power (CW), 9 kHz to 50 MHz or preamplifier on	10 dBm
Maximum DC voltage	± 10 VDC
Display range	DANL to 30 dBm
Amplitude accuracy, 20 °C to 30 °C; typical conditions	± 1.0 dB
Amplitude accuracy, full temperature range and all conditions	± 1.5 dB
IF in-band flatness, 50 MHz analysis bandwidth	< ± 1.5 dB
IF in-band flatness, 100 MHz analysis bandwidth	< ± 2.0 dB
Reference level	−70 dBm to +23 dBm
RF preamplifiers	Auto or manual
VSWR, 90 MHz to maximum frequency	< 2.0:1 nominal

Displayed Average Noise Level (DANL) (8 rows)

Displayed Average Noise Level (DANL)
Parameter / condition	YSA-P045-DC
Reference level −20 dBm; RBW = 1 kHz; guaranteed / typical
9 kHz to 1 MHz	-131 / -134 dBm/Hz
1 MHz to 100 MHz	-151 / -154 dBm/Hz
100 MHz to 3.0 GHz	-141 / -144 dBm/Hz
3.0 GHz to 4.5 GHz	-142 / -145 dBm/Hz
Reference level −70 dBm; RBW = 1 kHz; guaranteed / typical
9 kHz to 1 MHz	-141 / -144 dBm/Hz
1 MHz to 100 MHz	-163 / -166 dBm/Hz
100 MHz to 3.0 GHz	-165 / -168 dBm/Hz
3.0 GHz to 4.5 GHz	-165 / -168 dBm/Hz

Performance notes

The YSA-P045-DC sensitivity figures are 1 GHz DANL -168 dBm/Hz and SSB phase noise in spectrum sweep mode < -110 dBc/Hz at 1 GHz carrier, 10 kHz offset.

The YSA-P045-DC SSB phase-noise tables in phase noise measurement mode list two values per offset for each carrier: at 1 GHz (guaranteed / typical); at 4.5 GHz (guaranteed / typical).

The YSA-P045-DC sweep-speed figures are stated with Spur Rejection = Bypass.

Specifications are subject to change without notice.

Models, Configuration & Compatibility

YSA-P045-DC

Control interfaces and software

SAStudio4 supports spectrum analysis, IQ streaming, power detection, real-time spectrum analysis, phase-noise measurement, harmonic analysis and mapping. SCPI remote control is supported. USB 3.0 Type-C, USB 2.0 Type-C, USB 2.0 Type-A and 1000 Mbps Ethernet provide data connections. Basic vector modulation analysis (Option 71), pulse analysis (Option 72) and EMI pre-compliance measurement (Option 74) are optional.

SAStudio4 · SCPI · USB · Ethernet

Order codes and configuration are confirmed in the quotation.

Technical Resources

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Selection guidance

Format: Handheld

Coverage: 0 Hz to 4.5 GHz; 50 MHz standard / 100 MHz with Option 50

Best for: Portable spectrum analysis when the DC-frequency extension is required for field or laboratory measurements.

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YSA-P045-DC Handheld Real-Time Spectrum Analyzer

Overview

Standard Spectrum Analysis

IQ Streaming

Power Detection Analysis

Real-Time Spectrum Analysis

Basic Vector Modulation Analysis (Option 71)

Harmonic Analysis

Phase Noise Measurement

Pulse Analysis (Option 72)

Mapping

EMI Pre-Compliance Measurement (Option 74)

Channel Power

Occupied Bandwidth (OBW)

Adjacent Channel Power Ratio (ACPR)

IM3

SEM

AM Demodulation

FM Demodulation

Multiple Unit Display

Antenna Factor

Amplitude Offset

Signal Track

Peak Table

Data Record and Playback

Tracking Generator (Option 60)

Key Capabilities & Applications

Start at DC

Capture and analyze signals

Use handheld or remote control

Technical Specifications

Models, Configuration & Compatibility

Technical Resources

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