Advantest U3741 9kHz to 3GHz Spectrum Analyzer

The Advantest U3741 spectrum analyzer offers a frequency range from 9 kHz to 3 GHz, designed for various applications including signal analysis, component testing, and electromagnetic compatibility (EMC) measurements. It is recognized for its high performance, excellent sensitivity, resolution, and dynamic range. The device features a user-friendly interface and a comprehensive set of functions beneficial for engineers and technicians across different industries.

### Technical Specifications

**Frequency Characteristics**
* **Frequency Range:** 9 kHz to 3 GHz
* **Pre-Amplifier Frequency Range:** 10 MHz to 3 GHz
* **Synchronizable Frequency Range:** 9 kHz to 3 GHz
* **Frequency Reading Accuracy:** ± (marker read value × frequency reference accuracy + span × span accuracy + residual FM)
* **Frequency Span Range:** 5 kHz to Full, zero span; 1 kHz to Full, zero span (with OPT.70 installed)
* **Frequency Span Accuracy:** < ±1% * **Residual FM (zero/span):** < 60 Hzp-p/100 ms (internal frequency reference)**Amplitude Characteristics** * **Measurement Range:** Displayed average noise level to +30 dBm; Displayed average noise level to 134 dBµV (with OPT.15 installed) * **Maximum Safe Input Level:** * Attenuator ≥ 10 dB, Pre-Amp OFF: +30 dBm, 134 dBµV (with OPT.15 installed) * Attenuator ≥ 10 dB, Pre-Amp ON: +13 dBm, 120 dBµV (with OPT.15 installed) * **DC Maximum Input Level:** ±50 VDC * **Input Attenuator Range:** 0 to 50 dB (10 dB steps) * **Scale Unit Options:** dBm, dBmV, dBµV, dBµVemf, dBpW, W, V * **Reference Level Setting Range:** -140 to +40 dBm; -31.2 to 148.8 dBµV (with OPT.15 installed) * **Detection Modes:** Normal, Positive peak, Negative peak, Sample, RMS, and Average * **Overall Amplitude Accuracy:** * After calibration, Pre-Amp OFF, at 20-30°C, 10 dB attenuator, 0 dBm reference level, -10 to -50 dBm input signal: ±1.0 dB (9 kHz to 3 GHz) * After calibration, Pre-Amp OFF, at 20-30°C, 10 dB attenuator, 0 dBm reference level, -10 to -50 dBm input signal: ±0.8 dB (10 MHz to 3 GHz) * With OPT.15 installed: ±2.1 dB (9 kHz to 2.2 GHz) * With OPT.15 installed: ±0.9 dB (10 MHz to 2.2 GHz) * **Calibration Signal:** 20 MHz, -20 dBm (75 Ω, with OPT.15 installed) * **Calibration Signal Accuracy:** ±0.3 dB**Resolution Bandwidth (RBW)** * **RBW Range:** 100 Hz to 1 MHz (1 to 3 steps) * **RBW Range (with OPT.70/71 installed):** 30 Hz to 1 MHz * **RBW Accuracy:** < ±12%**Video Bandwidth (VBW)** * **VBW Range:** 10 Hz to 3 MHz (1 to 3 steps)**Sweep Characteristics** * **Sweep Time Setting Range (Spectrum Mode):** 20 ms to 1000 s * **Sweep Time Setting Range (Zero Span):** 50 µs to 1000 s * **Sweep Time Accuracy:** < ±2% (zero span) * **Sweep Mode:** Continuous, single, gated**Triggering** * **Trigger Sources:** Free run, video, external, IF**Noise Level** * **Displayed Average Noise Level:** -135 dBm (at 1 GHz, Pre-Amp ON) * **Displayed Average Noise Level:** -155 dBm/Hz (at 1 GHz, Pre-Amp ON)**Interfaces** * **LAN:** RJ45 type, 10/100 base-T * **USB:** For saving/recalling configuration files and measurement data * **GPIB:** Available * **Audio Output:** Small monophonic jack * **External Trigger Input:** Available * **External Frequency Reference Source Input:** Available * **CAL OUT:** Available * **IF OUT:** 21.4 MHz IF signal output * **VGA Output:** For external monitor**Power Supply** * **AC Power Input:** Automatic switching, 100 to 120 VAC, 50/60 Hz or 220 to 240 VAC, 50/60 Hz * **DC Power Input:** DC +11 V to +17 V * **Power Consumption:** 100 VA or less (AC operation), 70 W or less (DC operation) * **Battery Operation:** Continuous operation up to 2.5 hours with battery pack**Physical Characteristics** * **Mass:** 5 kg or less (without options) * **External Dimensions (W x H x D):** Approx. 308 x 175 x 209 mm (excluding protruding parts); Approx. 337 x 190 x 307 mm (including handle and feet) * **Display:** 6.5-inch color LCD * **Warm-up Time:** 5 minutes (at +20 to +30°C)**Environmental Specifications** * **Operating Environment:** Ambient temperature: 0 to +50°C; Humidity: RH 85% or less (no condensation) * **Storage Environment:** -20 to +60°C; Humidity: RH 85% or less**Optional Features and Accessories** * **OPT.10:** 2 Channel input (50 Ω, 3 GHz) * **OPT.11:** 2 Channel input (75 Ω, 2.2 GHz) * **OPT.15:** 1 Channel input (75 Ω, 2.2 GHz) * **OPT.20:** High-stability frequency reference source * **OPT.28:** EMC filter (200 Hz, 9 kHz, 120 kHz, 1 MHz) * **OPT.53/54:** Time-domain analysis (1 ch/2 ch) * **OPT.55/56:** Wide-band time-domain analysis (1 ch/2 ch) * **OPT.70/71:** High-purity spectrum analysis (1 ch/2 ch) * **OPT.75:** Tracking generator (75 Ω, 2.2 GHz) * **OPT.76:** Tracking generator (50 Ω, 3 GHz) * **Software:** Sample software for various measurements including spectrum mask, EMI, phase noise, and time-domain analysis is available**Note:** The Advantest U3741 and U3751 spectrum analyzers are discontinued.Why Choose Aumictech for the Advantest U3741? At Aumictech, we specialize in sourcing and supplying high-end test and measurement equipment. Whether you require a specific legacy instrument like the Advantest U3741, need to ensure the continued operational efficiency of your lab, or are looking for a reliable spectrum analyzer for demanding signal analysis applications, our team ensures you access to the performance and capabilities your projects demand.