# Agilent E7401A 1.5 GHz EMC Analyzer (Pre-Owned) # Agilent E7401A 1.5 GHz EMC Analyzer (Pre-Owned) ## Key Features At A Glance - Maximum safe input +30 dBm average continuous power; DC and peak-pulse input limits vary by model - Frequency coverage from 9 kHz up to 26.5 GHz across the five-model E7400 A-series - CISPR-compliant quasi-peak detector with 200 Hz, 9 kHz, 120 kHz and 1 MHz EMI bandwidths - Resolution bandwidths from 10 Hz to 3 MHz in a 1-3-10 sequence plus dedicated EMI bandwidths - Standard built-in preamplifier for low-level emissions measurements - GPIB (IEEE-488) standard, with optional RS-232 serial and a standard parallel printer port - Type tested to MIL-PRF-28800F class 3 environmental specifications - Optional tracking generator (Option 1DN) for stimulus-response measurements The Agilent E7400 A-series is a family of 50 Ω EMC analyzers consisting of the E7401A, E7402A, E7403A, E7404A and E7405A models. Each is a spectrum analyzer configured for electromagnetic compatibility measurement, sharing a common architecture while differing primarily in upper frequency coverage. An EMC analyzer of this type captures and characterizes radio-frequency energy across a tunable span, displaying amplitude versus frequency so that emissions from a device can be measured against limit lines. These analyzers carry a quasi-peak detector that displays the quasi-peak amplitude of a pulsed radio-frequency or continuous-wave signal, with an amplitude response conforming to Publication 16 of the Comite International Special des Perturbations Radioelectrique (CISPR), Section 1, Clause 2. The instruments' own conducted and radiated emissions comply with CISPR Publication 11/1990 Group 1 Class B. Dedicated EMI bandwidths of 200 Hz, 9 kHz, 120 kHz and 1 MHz support measurement work referenced to CISPR pulse responses. ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, which lets buyers source instruments like the E7400 A-series directly from equipment we keep on hand. Every used unit we sell is inspected and functionally verified in-house by qualified technicians before it ships, while new units ship factory-sealed exactly as received. That combination of held inventory and hands-on verification of pre-owned stock is the foundation of how we support engineers and labs. ## Brand Heritage Hewlett-Packard's test and measurement business was spun out as Agilent Technologies in 1999, and that test and measurement line was subsequently transferred to Keysight Technologies in 2014. Instruments branded Agilent date from this intermediate era of the same product lineage. ## Compare Other Models in This Series The E7400 A-series brings together five EMC analyzers built on a shared 50 Ω spectrum-analyzer platform: the E7401A, E7402A, E7403A, E7404A and E7405A. The models share the same EMI measurement feature set, including the CISPR quasi-peak detector, the dedicated EMI bandwidths, and a standard preamplifier, so the measurement workflow is consistent across the line. What separates the models is principally how high in frequency each one tunes, along with related amplitude and input-handling differences. Selecting within the family is largely a question of the highest frequency a given emissions task requires, balanced against the broader amplitude and option configuration each model supports. Each model in the E7400 A-series below links to its own dedicated product page, where pre-owned-condition pricing is matched to that specific unit. Review the individual model pages to compare the exact configuration and condition that fits your application. The clearest difference across the family is upper frequency coverage: the E7401A reaches 1.5 GHz, the E7402A 3.0 GHz, the E7403A 6.7 GHz, the E7404A 13.2 GHz, and the E7405A 26.5 GHz. Several models add dc-coupled and ac-coupled low-frequency extensions through Option UKB, and the higher-frequency models tune in multiple LO harmonic mixing bands. Input handling also varies: the E7401A provides a 0 to 60 dB input attenuator, while the E7402A, E7403A, E7404A and E7405A provide 0 to 65 dB. Peak pulse power tolerance reaches +50 dBm on the E7402A through E7405A versus +30 dBm on the E7401A, and weight increases with the higher-frequency models. The comparison table that follows lists these per-model figures side by side. Model Frequency Range Input Attenuator Range Preamplifier (Standard) **E7401A** 9 kHz to 1.5 GHz 0 to 60 dB, in 5 dB steps 100 kHz to 1.5 GHz (nominal gain 20 dB) E7402A 9 kHz to 3.0 GHz 0 to 65 dB (75 dB), in 5 dB steps 1 MHz to 3 GHz (nominal gain 20 dB) E7403A 9 kHz to 6.7 GHz 0 to 65 dB (75 dB), in 5 dB steps 1 MHz to 3 GHz (nominal gain 20 dB) E7404A 9 kHz to 13.2 GHz 0 to 65 dB (75 dB), in 5 dB steps 1 MHz to 3 GHz (nominal gain 20 dB) Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Product Core & Specifications Specification Value Frequency Range (50 Ω) Frequency range 9 kHz to 1.5 GHz Maximum Safe Input Level Average continuous power (input attenuator ≥15 dB) +30 dBm (1 W) Peak pulse power +30 dBm (1 W) dc 100 Vdc Input Attenuator Range E7401A 0 to 60 dB, in 5 dB steps Displayed Average Noise Level (dBm) (Input terminated, 0 dB attenuation, sample-detector) 400 kHz to 10 MHz ≤-115 (1 kHz RBW); ≤-134 (10 Hz RBW); ≤-150 (1 kHz RBW, preamp on); ≤-155 (10 Hz RBW, preamp on, typ); ≤-165 (1 Hz RBW Opt 1D5, preamp on, typ) 10 MHz to 500 MHz ≤-119; ≤-138; ≤-154; ≤-156; ≤-166 500 MHz to 1 GHz ≤-117; ≤-136; ≤-152; ≤-156; ≤-166 1 GHz to 1.5 GHz ≤-114; ≤-133; ≤-150; ≤-155; ≤-165 Frequency Response (10 dB input attenuation) 9 kHz to 1.5 GHz Absolute ±0.5 dB; Relative flatness ±0.5 dB RF Input VSWR (at tuned frequency, 10 dB attenuation) 1 MHz to 1.5 GHz 1.35:1 Noise Sidebands (1 kHz RBW, 30 Hz VBW and sample detector) ≥1 kHz na (standard); ≤-79 dBc/Hz (Option 1D5) ≥10 kHz ≤-93 dBc/Hz; ≤-95 dBc/Hz (Option 1D5) \> 20 kHz ≤-100 dBc/Hz; ≤-102 dBc/Hz (Option 1D5) \> 30 kHz ≤-104 dBc/Hz; ≤-106 dBc/Hz (Option 1D5) \> 100 kHz ≤-113 dBc/Hz; ≤-116 dBc/Hz (Option 1D5) Second Harmonic Distortion 2 MHz to 750 MHz < -75 dBc for -40 dBm tone at input mixer Third Order Intermodulation Distortion 100 MHz to 1.5 GHz < -87 dBc for two -30 dBm tones at input mixer and > 50 kHz separation Preamplifier (standard) E7401A 100 kHz to 1.5 GHz (nominal gain 20 dB) Weight (without options) Net weight 12.6 kg (27.7 lbs.) > **Important:** Specifications apply within the one-year calibration cycle with AUTO ALIGN \[ALL\] selected, after the analyzer has been stored a minimum of 2 hours within the operating temperature range, turned on for at least 5 minutes, and Align Now RF has been run once every 24-hour period. > **Important:** EMI compatibility meets Class A performance during dc operation, or on instruments with serial number US41110000 or lower. ## About this Pre-Owned unit This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects. - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - 675.0 USD - **Vendor:** Agilent Technologies - **Type:** Spec An - **Tags:** Agilent, Agilent Keysight, Analyzers, Manufacturers, product_manual_group_1, Product_used, Spectrum ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 525.00 USD | In stock | | NIST Traceable with Full Data | 600.00 USD | In stock | | ISO IEC 17025 Accredited | 675.00 USD | In stock | ## Images - E7401A Agilent Spectrum Analyzer --- > Source: [ValueTronics](https://valuetronics.com/products/e7401a-agilent-spectrum-analyzer-used) > Updated: 2026-07-06