The UTS5026A spectrum input covers 9 kHz at the low end and 26.5 GHz at the high end, spanning eleven internal LO frequency bands to maintain calibrated response across the full range. That single-instrument reach removes the need for separate analyzers when work moves between sub-6 GHz cellular spectrum, ISM and Wi-Fi bands, K-band SATCOM downlinks, point-to-point microwave links, and radar IF chains.

Frequency span is selectable from 0 Hz (zero-span time-domain capture) to the full 26.5 GHz range. Sweep time runs 1 ms to 4,000 s for spans ≥10 Hz, and 1 µs to 6,000 s in zero span for capturing transient events. The 10 MHz internal reference (with ±3×10⁻⁸ temperature stability) ties measurements to a stable timebase, with external 10 MHz reference in/out on rear-panel BNC for shared-clock instrument racks.

Weak-signal work — identifying low-level spurs in oscillator output, characterizing leakage from a shielded enclosure, capturing intermittent interference — is rate-limited by how far the analyzer’s own noise floor sits below the signal of interest. UTS5026A reaches -163 dBm/Hz typical DANL in the 20 MHz to 1.5 GHz band with the UTS5000A-P26 preamp option, and -160 dBm/Hz typical across most of the analyzer’s mid-band range with preamp engaged. Without P26, baseline DANL runs -145 to -150 dBm/Hz typical mid-band — competitive for general spectrum work, but P26 is what unlocks the headline number.

Preamp coverage extends from 100 kHz to 7.5 GHz on the low-frequency band and 100 kHz to 26.5 GHz on the high band. Maximum safe input is +27 dBm average (input attenuation ≥20 dB, preamp on) and +47 dBm peak for short-pulse work.

The local oscillator’s phase noise is the floor that limits how cleanly the analyzer can resolve close-in spurs, modulation sidebands, and reciprocal mixing artifacts on the device under test. UTS5026A specifies -107 dBc/Hz typical at 10 kHz offset from a 1 GHz carrier, with -102 dBc/Hz at 1 kHz, -110 dBc/Hz at 100 kHz, and -132 dBc/Hz at 1 MHz offset (typical, 1 kHz RBW, 10 Hz VBW, log-average over >50 acquisitions).

For RF designers characterizing PLL synthesizers, VCOs, and crystal oscillators, that envelope means close-in noise sidebands on the device under test sit above the analyzer’s own contribution rather than buried beneath it. The UTS5000A-PNM Phase Noise Measurement option adds a dedicated measurement mode with logarithmic offset axes, jitter calculation, and integration limits.

Resolution Bandwidth selects from 1 Hz to 3 MHz in 10% steps (the standard 10:1 ratio family used across professional spectrum analyzers), plus dedicated 4, 5, 6, and 8 MHz wide-band settings for fast sweeps over wide spans. Bandwidth accuracy is ±1.0% (±0.044 dB) nominal from 1 Hz to 750 kHz.

Selectivity (the −60 dB to −3 dB shape factor) measures <4.1 : 1 nominal, which lets two adjacent unequal-amplitude carriers resolve cleanly without the smaller signal disappearing into the larger one’s skirt. Video bandwidth tracks the same range, and seven trace detectors cover both general-purpose and standards-specific measurement modes.

Sweep point count is configurable from 11 to 100,001 across all spans. At 100,001 points across a 1 GHz span, frequency resolution per trace bin is 10 kHz — tight enough to localize narrow-band interference, identify specific ITU channel allocations, and walk between adjacent regulatory mask boundaries without interpolation between coarse sweep bins.

Marker resolution scales with the trace span and sweep-point count. A dedicated frequency counter mode tightens uncertainty further, with counter resolution at 0.001 Hz.

The UTS5000A-VSA Digital Demodulation option adds a vector demodulation engine covering 2 MHz to 26.5 GHz carrier and the major digital modulation formats: ASK (2-ASK); FSK (2/4/8/16); MSK (GMSK); PSK (BPSK, QPSK, OQPSK, 8PSK); DPSK (DBPSK, DQPSK, D8PSK, π/4-DQPSK, π/8-D8PSK); QAM (16, 32, 64, 128, 256). Symbol rate ranges 1 ksps to 2.5 Msps, with EVM/SNR statistics displayed alongside IQ constellation, eye, and time-domain views.

The UTS5000A-I/Q Analyzer option adds direct I/Q capture and spectrum analysis at 9 kHz to 25 MHz analysis bandwidth standard (extended to 40 MHz with B40), with a 14-bit ADC at 90 MSa/s capturing up to 4,000,000 IQ sample pairs per acquisition. Window selection covers Flat-top, Uniform, Hanning, Gaussian, Blackman, Blackman-Harris, and Kaiser-Bessel shapes. Together, the two options form the foundation for waveform-level characterization of arbitrary digitally-modulated carriers.

For teams developing 5G New Radio infrastructure, LTE base-station components, or cellular-band devices, three dedicated demodulation licenses extend the analyzer into protocol-aware air-interface measurement: UTS5000A-NR for 5G New Radio, UTS5000A-FDD-LTE, and UTS5000A-TDD-LTE. Each license is a standalone purchase.

Combined with the analyzer’s 26.5 GHz frequency reach, the cellular licenses cover sub-6 GHz LTE and 5G NR FR1 deployments directly, plus 5G NR FR2 mmWave bands at 24.25–26.5 GHz. The instrument’s low phase noise and tight amplitude accuracy translate into clean EVM measurements on the device under test. License unlocks are no-expiration: once added, they remain on the instrument for the life of the unit.

The UTS5000A-EMI Pre-Compliance Measurement option transforms the analyzer into a CISPR/EN-class pre-compliance instrument with regulatory limit lines, quasi-peak and average detectors, and band-segmented scan modes. Measurement extends to the analyzer’s full 26.5 GHz ceiling, covering not just the traditional 30 MHz to 1 GHz radiated-emissions band but also the higher-frequency emissions from 5G transceivers, automotive radar, and microwave data links.

The companion UTS-EMI01 near-field probes kit adds four probe heads spanning 30 MHz to 3 GHz at three resolution scales plus a 5 mm resolution probe to 2 GHz, for localizing radiating components on a populated PCB. Pre-compliance use moves EMI debugging earlier in the development cycle — before the formal test-house chamber visit, when board-level fixes are still cheap.

The front-panel display is a 15.6-inch 1920×1080 multi-touch capacitive TFT LCD — a deliberate departure from the 7-to-10-inch displays common at this frequency tier. Capacitive multi-touch supports drag-to-pan, pinch-zoom on traces, and gesture-based menu navigation, with the larger display real estate accommodating up to 4-window simultaneous layouts in the VSA and I/Q modes. The instrument is built for serviceability over the warranty lifetime: a removable dust filter on the air inlet lifts out for cleaning, preventing the dust-accumulation failure mode that limits long-term reliability on cooled bench instruments.

The UTS5026A spectrum input covers 9 kHz at the low end and 26.5 GHz at the high end, spanning eleven internal LO frequency bands to maintain calibrated response across the full range. That single-instrument reach removes the need for separate analyzers when work moves between sub-6 GHz cellular spectrum, ISM and Wi-Fi bands, K-band SATCOM downlinks, point-to-point microwave links, and radar IF chains.

Frequency span is selectable from 0 Hz (zero-span time-domain capture) to the full 26.5 GHz range. Sweep time runs 1 ms to 4,000 s for spans ≥10 Hz, and 1 µs to 6,000 s in zero span for capturing transient events. The 10 MHz internal reference (with ±3×10⁻⁸ temperature stability) ties measurements to a stable timebase, with external 10 MHz reference in/out on rear-panel BNC for shared-clock instrument racks.

Weak-signal work — identifying low-level spurs in oscillator output, characterizing leakage from a shielded enclosure, capturing intermittent interference — is rate-limited by how far the analyzer’s own noise floor sits below the signal of interest. UTS5026A reaches -163 dBm/Hz typical DANL in the 20 MHz to 1.5 GHz band with the UTS5000A-P26 preamp option, and -160 dBm/Hz typical across most of the analyzer’s mid-band range with preamp engaged. Without P26, baseline DANL runs -145 to -150 dBm/Hz typical mid-band — competitive for general spectrum work, but P26 is what unlocks the headline number.

Preamp coverage extends from 100 kHz to 7.5 GHz on the low-frequency band and 100 kHz to 26.5 GHz on the high band. Maximum safe input is +27 dBm average (input attenuation ≥20 dB, preamp on) and +47 dBm peak for short-pulse work.

The local oscillator’s phase noise is the floor that limits how cleanly the analyzer can resolve close-in spurs, modulation sidebands, and reciprocal mixing artifacts on the device under test. UTS5026A specifies -107 dBc/Hz typical at 10 kHz offset from a 1 GHz carrier, with -102 dBc/Hz at 1 kHz, -110 dBc/Hz at 100 kHz, and -132 dBc/Hz at 1 MHz offset (typical, 1 kHz RBW, 10 Hz VBW, log-average over >50 acquisitions).

For RF designers characterizing PLL synthesizers, VCOs, and crystal oscillators, that envelope means close-in noise sidebands on the device under test sit above the analyzer’s own contribution rather than buried beneath it. The UTS5000A-PNM Phase Noise Measurement option adds a dedicated measurement mode with logarithmic offset axes, jitter calculation, and integration limits.

Resolution Bandwidth selects from 1 Hz to 3 MHz in 10% steps (the standard 10:1 ratio family used across professional spectrum analyzers), plus dedicated 4, 5, 6, and 8 MHz wide-band settings for fast sweeps over wide spans. Bandwidth accuracy is ±1.0% (±0.044 dB) nominal from 1 Hz to 750 kHz.

Selectivity (the −60 dB to −3 dB shape factor) measures <4.1 : 1 nominal, which lets two adjacent unequal-amplitude carriers resolve cleanly without the smaller signal disappearing into the larger one’s skirt. Video bandwidth tracks the same range, and seven trace detectors cover both general-purpose and standards-specific measurement modes.

Sweep point count is configurable from 11 to 100,001 across all spans. At 100,001 points across a 1 GHz span, frequency resolution per trace bin is 10 kHz — tight enough to localize narrow-band interference, identify specific ITU channel allocations, and walk between adjacent regulatory mask boundaries without interpolation between coarse sweep bins.

Marker resolution scales with the trace span and sweep-point count. A dedicated frequency counter mode tightens uncertainty further, with counter resolution at 0.001 Hz.

The UTS5000A-VSA Digital Demodulation option adds a vector demodulation engine covering 2 MHz to 26.5 GHz carrier and the major digital modulation formats: ASK (2-ASK); FSK (2/4/8/16); MSK (GMSK); PSK (BPSK, QPSK, OQPSK, 8PSK); DPSK (DBPSK, DQPSK, D8PSK, π/4-DQPSK, π/8-D8PSK); QAM (16, 32, 64, 128, 256). Symbol rate ranges 1 ksps to 2.5 Msps, with EVM/SNR statistics displayed alongside IQ constellation, eye, and time-domain views.

The UTS5000A-I/Q Analyzer option adds direct I/Q capture and spectrum analysis at 9 kHz to 25 MHz analysis bandwidth standard (extended to 40 MHz with B40), with a 14-bit ADC at 90 MSa/s capturing up to 4,000,000 IQ sample pairs per acquisition. Window selection covers Flat-top, Uniform, Hanning, Gaussian, Blackman, Blackman-Harris, and Kaiser-Bessel shapes. Together, the two options form the foundation for waveform-level characterization of arbitrary digitally-modulated carriers.

For teams developing 5G New Radio infrastructure, LTE base-station components, or cellular-band devices, three dedicated demodulation licenses extend the analyzer into protocol-aware air-interface measurement: UTS5000A-NR for 5G New Radio, UTS5000A-FDD-LTE, and UTS5000A-TDD-LTE. Each license is a standalone purchase.

Combined with the analyzer’s 26.5 GHz frequency reach, the cellular licenses cover sub-6 GHz LTE and 5G NR FR1 deployments directly, plus 5G NR FR2 mmWave bands at 24.25–26.5 GHz. The instrument’s low phase noise and tight amplitude accuracy translate into clean EVM measurements on the device under test. License unlocks are no-expiration: once added, they remain on the instrument for the life of the unit.

The UTS5000A-EMI Pre-Compliance Measurement option transforms the analyzer into a CISPR/EN-class pre-compliance instrument with regulatory limit lines, quasi-peak and average detectors, and band-segmented scan modes. Measurement extends to the analyzer’s full 26.5 GHz ceiling, covering not just the traditional 30 MHz to 1 GHz radiated-emissions band but also the higher-frequency emissions from 5G transceivers, automotive radar, and microwave data links.

The companion UTS-EMI01 near-field probes kit adds four probe heads spanning 30 MHz to 3 GHz at three resolution scales plus a 5 mm resolution probe to 2 GHz, for localizing radiating components on a populated PCB. Pre-compliance use moves EMI debugging earlier in the development cycle — before the formal test-house chamber visit, when board-level fixes are still cheap.

The front-panel display is a 15.6-inch 1920×1080 multi-touch capacitive TFT LCD — a deliberate departure from the 7-to-10-inch displays common at this frequency tier. Capacitive multi-touch supports drag-to-pan, pinch-zoom on traces, and gesture-based menu navigation, with the larger display real estate accommodating up to 4-window simultaneous layouts in the VSA and I/Q modes. The instrument is built for serviceability over the warranty lifetime: a removable dust filter on the air inlet lifts out for cleaning, preventing the dust-accumulation failure mode that limits long-term reliability on cooled bench instruments.