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The Advantest U3661 is a portable microwave spectrum analyzer that covers a continuous frequency range of 9 kHz to 26.5 GHz. At 8.5 kg or less for the main unit (10.8 kg or less with the battery pack), it is presented as the lightest-weight microwave spectrum analyzer in its class. The compact, lightweight design uses a three-way power source system that includes battery operation, making it an analyzer built for field measurement, and it carries a built-in RS-232 interface for personal-computer connectivity and flexible data management using standard memory cards.
The U3661 is intended for field maintenance of microwave radio facilities and for digital mobile communication work. Its measurement set spans adjacent-channel leakage power of radio facilities through to microwave device evaluation, and its functions support communication systems that use FDMA, TDMA, and CDMA access methods. An easy-to-attach strap lets the analyzer be worn on the shoulder and carried into the field, and the unit is built to satisfy vibration, shock, and drop-test requirements so it can be used under harsh field conditions.
ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit is inspected and functionally verified in-house before it ships, while new units ship factory-sealed exactly as received. That combination of on-hand inventory and used-unit verification lets engineers source the right configuration of this analyzer with confidence in its condition and availability.
Advantest Corporation traces its roots to Takeda Riken, a Japanese test-and-measurement instrument maker that adopted the Advantest Corporation name in 1985. The company remains headquartered in Tokyo.
| Specification | Value |
|---|---|
| Frequency | |
| Frequency range | 9 kHz to 26.5 GHz |
| Frequency band (9 kHz to 3.2 GHz) | Band 0, Harmonic order N = 1 |
| Frequency band (3.0 GHz to 7.1 GHz) | Band 1, Harmonic order N = 1 |
| Frequency band (6.7 GHz to 14.5 GHz) | Band 2, Harmonic order N = 2 |
| Frequency band (13.7 GHz to 26.5 GHz) | Band 4, Harmonic order N = 4 |
| Preamplifier | 9 kHz to 3.2 GHz (Band 0) |
| Frequency read accuracy (Start, stop, center frequency, marker frequency) | ±(Frequency reading x Frequency reference accuracy + 5% x Span + 15% x RBW + 60 Hz x N) |
| Marker frequency counter resolution | 1 Hz to 1 kHz |
| Marker frequency counter accuracy | ±(Marker frequency x Frequency reference accuracy + 1LSD ± 5 Hz x N) (S/N ≥25 dB, 1 kHz ≤ span ≤ 200 MHz, RBW ≥3 kHz) |
| Frequency reference accuracy, aging rate | ±2x10-6/year |
| Frequency reference temperature stability | ±1x10-5 (0 °C to 50 °C) |
| Frequency span | |
| Range | 1 kHz to 26.7 GHz, 0 Hz (zero span) |
| Accuracy | 5% of span or less |
| Residual FM (zero span) | ≤60 Hzp-p x N/100 ms |
| Frequency drift (Span ≤10 kHz, at a fixed temperature, 30 minutes after power-on) | <150 Hz x N x (Sweep time/min) |
| Side-band noise | |
| 20 kHz offset, Frequency ≤7.1 GHz (Band 0, Band 1) | ≤-105 dBc |
| 20 kHz offset, Frequency > 6.7 GHz | ≤(-105+20 logN) dBc |
| 10 kHz offset, Frequency ≤7.1 GHz (Band 0, Band 1) | ≤-100 dBc |
| 10 kHz offset, Frequency > 6.7 GHz | ≤(-100+20 logN) dBc |
| Resolution bandwidth (3 dB) | |
| Range | 1 kHz to 3 MHz, 1 to 3 sequences; 100 Hz, 300 Hz (with OPT 26) |
| Accuracy | < ±20% (1 kHz to 1 MHz) (100 Hz, 300 Hz OPT 26); < ±25% (3 MHz) |
| Selectivity | <15:1 (60 dB : 3 dB) |
| Video bandwidth | 10 Hz to 3 MHz, 1 to 3 sequences |
| Amplitude range | |
| Measurement range | +30 dBm to (Average display noise level) |
| Maximum input level (Input attenuator ≥10 dB), Preamplifier OFF | +30 dBm, 0 VDCmax |
| Maximum input level, Preamplifier ON | +13 dBm, 0 VDCmax |
| Display range, Log | 10 x 10 div, 10, 5, 2, 1 dB/div |
| Display range, Linear | 10%/div of reference level (RBW ≥3 kHz) |
| Reference level range, Preamplifier OFF (Input attenuator 0 to 50 dB), Log | -64 dBm to +40 dBm (0.1 dB steps) |
| Reference level range, Preamplifier OFF, Linear | 141.1 µV to 22.36 V |
| Reference level range, Preamplifier ON (Input attenuator 0 to 10 dB), Log | -89 dBm to -25 dBm (0.1 dB steps) |
| Reference level range, Preamplifier ON, Linear | 7.934 µV to 12.57 mV |
| Input attenuator range | 0 dB to 50 dB (10 dB steps) |
| Dynamic range | |
| Average display noise level (RBW 1 kHz, VBW 10 Hz, input attenuator 0 dB, frequency ≥1 MHz), Preamplifier OFF, Band 0 | -{117 - 2 f[GHz]} dBm |
| Average display noise level, Preamplifier OFF, Band 1 | -105 dBm |
| Average display noise level, Preamplifier OFF, Band 2 | -110 dBm |
| Average display noise level, Preamplifier OFF, Band 4 | -105 dBm |
| Average display noise level, Preamplifier ON | -132 dBm + 3 f[GHz] dBm (1 MHz to 3.2 GHz (Band 0)) |
| 1dB gain compression (Input attenuator 0 dB, frequency 10 MHz or more), Preamplifier OFF | >-10 dBm (mixer input level) |
| 1dB gain compression, Preamplifier ON | >-30 dBm (preamplifier input level) |
| Spurious response, 2nd order harmonic distortion (10 MHz to 1.7 GHz, mixer level -30 dBm) | ≤-70 dBc |
| Spurious response, 2nd order harmonic distortion (1.7 GHz to 3.2 GHz, mixer level -10 dBm) | ≤-80 dBc |
| Spurious response, 2nd order harmonic distortion (>3.2 GHz, mixer level -10 dBm) | ≤-100 dBc |
| 3rd order distortion | ≤-70 dBc (Mixer input level -30 dBm, 2-signal difference > 10 kHz) |
| Image/multiple/out-band response | <-50 dBc |
| Residual response (Input 50 ohm termination, input attenuator 0 dB), Preamplifier OFF | ≤-100 dBm (1 MHz ≤ Frequency ≤ 3.2 GHz); ≤-90 dBm (Frequency > 3.2 GHz) |
| Residual response, Preamplifier ON | ≤-105 dBm (1 MHz ≤ Frequency ≤ 3.2 GHz) |
| Amplitude accuracy | |
| Frequency response (Automatic calibration, after pre-selector peak execution), Preamplifier OFF (100 kHz to 2.7 GHz) | ≤±1 dB |
| Frequency response, Preamplifier OFF (9 kHz to 3.2 GHz) | ≤±2 dB |
| Frequency response, Preamplifier OFF (3 GHz to 7 GHz) | ≤±1.5 dB |
| Frequency response, Preamplifier OFF (7 GHz to 14.4 GHz) | ≤±3.5 dB |
| Frequency response, Preamplifier OFF (14.4 GHz to 26.5 GHz) | ≤±4.0 dB |
| Frequency response, Preamplifier ON (Band 0, 100 kHz to 2.7 GHz) | ≤±1 dB |
| Frequency response, Preamplifier ON (Band 0, 9 kHz to 3.2 GHz) | ≤±2 dB |
| Calibration signal level accuracy (30 MHz) | -20 dBm±0.3 dB |
| IF gain error | < ±0.5 dB (After automatic calibration) |
| Scale display accuracy (After automatic calibration), Log | ≤±1.5 dB/90 dB; ≤±1 dB/10 dB; ≤±0.2 dB/1 dB |
| Scale display accuracy, Linear | ±5% of reference level (RBW ≥3 kHz) |
| Input attenuator switching accuracy (Referenced to 10 dB, 0 dB to 50 dB), 9 kHz to 12 GHz | ≤±1.1 dB |
| Input attenuator switching accuracy, 12 GHz to 20 GHz | ≤±1.3 dB |
| Input attenuator switching accuracy, 20 GHz to 26.5 GHz | ≤±1.8 dB |
| Resolution bandwidth switching error (After automatic calibration) | < ±1.0 dB (RBW referenced to 3 MHz) |
| Sweep | |
| Sweep time | 50 ms to 1000 s; 50 µs to 1000 s (zero span); manual sweep |
| Accuracy | < ±5% |
| Trigger mode | FREE RUN, SINGLE, VIDEO, EXT, TV |
| Demodulation | |
| Audio demodulation modulation type | AM, FM (FM operates at RBW ≥3 kHz) |
| Audio output | Speaker and earphone jacks (with volume control) |
| Input/output | |
| RF input connector | Type N, female (or Type SMA) |
| RF input impedance | 50 ohm (nominal) |
| VSWR preamplifier OFF (Input attenuator 10 dB to 50 dB) | <1.5:1 (100 kHz to 3 GHz); <2:1 (3 GHz to 26.5 GHz) |
| VSWR preamplifier ON (Band 0) | <2.5:1 (9 kHz to 3.2 GHz) |
| 10MHz frequency reference input connector | BNC female, rear panel |
| 10MHz frequency reference input impedance | 75 ohm (nominal) |
| 10MHz frequency reference input range | 0 dBm to +16 dBm |
| Video output connector | BNC female, rear panel |
| Video output impedance | 75 ohm (nominal), AC-coupled |
| Video output amplitude | Approx. 1 Vp-p, 75 ohm termination (composite video signal) |
| External trigger input connector | BNC female, rear panel |
| External trigger input impedance | 10k ohm (nominal), DC-coupled |
| External trigger input level | TTL level |
Important: Maximum input level: +30 dBm, 0 VDC max with the preamplifier OFF; +13 dBm, 0 VDC max with the preamplifier ON (input attenuator ≥ 10 dB).
Important: TV Demodulation (OPT 72) and Channel Input Setting (OPT 78) cannot be installed together with CDMA Measurement (OPT 60).
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.
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.
Model No
Advantest
Condition
Pre-Owned
Manufacturer
Advantest
Spec_ana_freq
9 kHz to 26.5 GHz
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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