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The Advantest R3131 is an easy-to-use personal spectrum analyzer that combines the high accuracy required for digital radio measurement with an emphasis on operability and usability. Covering 9 kHz to 3 GHz, it presents results on a 5.7-inch black-and-white STN display with enlarged characters for clear reading, and arranges its FREQ, SPAN, and LEVEL functions alongside dedicated data-entry, marker, and control keys to streamline setup at the bench or on a production line.
The R3131 is applied across diverse fields, including mobile communications, EMC, parts evaluation, installation and maintenance, development and production lines, and CATV. Its OBW and adjacent channel leakage power (ACP) functions support transmission characteristics testing for radio equipment, while the channel power and total power functions address frequency-diffuse and multi-carrier signals. A spectrum analyzer of this type captures and characterizes signals in the frequency domain, letting an engineer view signal levels, frequency content, and power within a defined band.
ValueTronics stocks and holds its own inventory in a 20,000 square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, so the equipment we sell is on hand and managed by our own team. Every used unit is inspected and functionally verified in-house against the original manufacturer's specifications before it ships, while new units ship factory-sealed exactly as received from the manufacturer.
Advantest Corporation traces its origins to Takeda Riken, a Japanese instrument maker, and adopted the Advantest name in 1985.
| Specification | Value |
|---|---|
| Frequency | |
| Range | 9 kHz to 3 GHz |
| Frequency reading accuracy | ± (Frequency reading x Frequency reference accuracy + Span x Span accuracy + 0.15 x Resolution bandwidth + 1 kHz) |
| Marker counter accuracy | ± (Marker frequency x Frequency reference accuracy + 1 LSD) (S/N ≥25 dB, SPAN ≤200 MHz) |
| Marker counter resolution | 1 Hz to 1 kHz |
| Frequency reference source accuracy | ±2 ppm/year; ±5 ppm at operating temperature range |
| Frequency span | zero, 50 kHz to 3 GHz |
| Frequency span accuracy | ≤±3% |
| Frequency stability, Residual FM | ≤100 Hzp-p/100 ms (zero span) |
| Sideband noise | ≤100 dBc/Hz (20 kHz offset) |
| Resolution 3 dB bandwidth | 1 kHz to 1 MHz, 1-3 step |
| Bandwidth accuracy | ≤±20% |
| Selectivity | ≤15:1 (60 dB:3 dB) |
| 6 dB bandwidth | 9 kHz, 120 kHz |
| Video bandwidth | 10 Hz to 1 MHz, 1-10 step |
| Amplitude | |
| Amplitude measurement range | +20 dBm to Average noise level |
| Maximum input level | +20 dBm, 50 VDC |
| Display range (LOG) | 10 dB/div 8 div, 1,2,5 dB/div 10 div |
| Display range (LIN) | 10%/div of reference level |
| Reference level range (LOG) | -64 dBm to +40 dBm |
| Reference level range (LIN) | +141.1 µV to +22.36 V |
| Input attenuator range | 0 to 50 dB, 10 dB step |
| Sweep | |
| Sweep time | 50 ms to 500 s |
| Sweep time accuracy | ≤±3% |
| Trigger mode | FREE RUN, VIDEO, EXT, LINE |
| Sweep mode | REPEAT, SINGLE |
| Dynamic Range | |
| Average noise level | -113 dBm +2 f (GHz) dB (at RBW 1 kHz, VBW 10 Hz, INPUT ATT 0 dB, frequency ≥1 MHz) |
| 1 dB gain compression | > -5 dBm (mixer input level, f ≥20 MHz) |
| Secondary harmonic distortion | ≤-70 dB (input frequency ≥10 MHz, mixer input level -30 dBm) |
| 3rd Order Intermodulation | ≤-70 dB (input frequency ≥10 MHz, mixer input level -30 dBm, ∆f > 50 kHz) |
| Other input spurious | ≤-60 dB (offset ≥20 MHz, mixer input level -30 dBm) |
| Residual response | ≤-100 dBm (Frequency ≥1 MHz, INPUT ATT = 0 dB, input 50 Ω terminated) |
| Amplitude Accuracy | |
| Calibration signal | 30 MHz, -20 dBm ±0.3 dB |
| Frequency response | ≤±0.5 dB (100 kHz to 3 GHz, ATT = 10 dB); ≤±1 dB (100 kHz to 2 GHz); ≤±2 dB (9 kHz to 3 GHz) (after calibration at 30 MHz reference) |
| Scale display accuracy (LOG) | ≤±0.5 dB (0 to -20 dB); ≤±1.5 dB/70 dB; ≤±1.0 dB/10 dB; ≤±0.2 dB/1 dB (after auto calibration) |
| Scale display accuracy (LIN) | ±5% of reference level |
| Input attenuator switching accuracy | ≤±0.3 dB (10 dB reference, 30 MHz) |
| Resolution bandwidth switching accuracy | ≤±0.5 dB (after auto calibration) |
| IF gain error | ≤±0.5 dB (after auto calibration) |
| Total level accuracy | ±1.5 dB (after auto calibration, REF = -50 to 0 dBm, ATT = 10 dB, 2 dB/div, RBW = 300 kHz, f > 100 kHz) |
| Input/Output | |
| RF input connector/impedance | N type jack/50 Ω (nominal) |
| VSWR | ≤1.5 (100 kHz to 2 GHz, INPUT ATT ≥10 dB); ≤2.0 (9 kHz to 3 GHz, INPUT ATT ≥10 dB) |
| 10 MHz REF. input | BNC jack, 50 Ω; Input range -10 dBm to +10 dBm |
| Ext. trigger input | BNC jack, 10 kΩ (nominal), DC coupling |
| Phone output | Mini monophonic jack, 8 Ω |
| GPIB interface | IEEE-488 bus connector |
| Serial interface | D-SUB 9-pin |
| Printer interface | D-SUB 25-pin, ESC/P, PCL |
| Floppy disk drive | 3.5-inch, 1.4 Mbyte, MS-DOS format |
| General | |
| Operating conditions | 0°C to +50°C, 85%RH max. (without condensation) |
| Storage conditions | -20°C to +60°C |
| Power supply | 100/200 VAC, auto switching; 100 VAC: 100 V to 120 V, 50 Hz/60 Hz; 220 VAC: 220 V to 240 V, 50 Hz/60 Hz |
| Power consumption | 200 VA max. (100 VAC) |
| Weight | 12 kg or less |
| Dimensions | Approx. 424 mm (W) x 177 mm (H) x 300 mm (D) |
Important: Maximum input level: +20 dBm, 50 VDC.
Recommended pairing: use the ZRB2 SWR bridge together with the OPT.74 tracking generator to measure the reflection characteristics of antennas and filters, per the datasheet's typical setup.
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 3 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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