Yokogawa AQ7275 735032 OTDR
Condition: Used (Tested, Working)
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YOKOGAWA AQ7275 OTDR Portable Optical Time Domain Reflectometer (Model: 735032)
The Yokogawa AQ7275 (Model 735032) is an Optical Time Domain Reflectometer engineered for precise characterization, attenuation verification, and fault identification across single-mode fiber infrastructure. Equipped with dual operating optical wavelengths at 1310 nm and 1550 nm (±25 nm), this instrument delivers an optimal nominal dynamic range of 34 dB / 32 dB (expandable up to 36/34 dB under the /DR option configuration).
Configured for harsh, mission-critical field deployments—ranging from telecommunications FTTx/access drops to marine vessel fiber backbones, offshore umbilical data conduits, and naval shipboard control loops—the AQ7275 features an ultra-short event dead zone of 0.8 m and an attenuation dead zone down to 7 m. This allows technicians and automation engineers to pinpoint localized insertion losses, dirty bulkhead connections, tight microbends, and defective fusion splices adjacent to termination panels, patch fields, or shipboard IP routing racks.
The mainframe incorporates an 8.4-inch transreflective color TFT LCD (640 × 480 VGA) optimized for visibility in both direct deck sunlight and unlit machinery switchboard compartments. With a boot time under 10 seconds, USB storage/host peripheral support, and multi-fiber auto-analysis algorithms, the AQ7275-735032 ensures rapid, dependable commissioning and emergency loop recovery.
Model Details
- Manufacturer: Yokogawa Electric Corporation / Yokogawa Test & Measurement
- Mainframe Series: AQ7275 Optical Time Domain Reflectometer
- Optical Unit Model / MPN: 735032 (Standard Dual-Wavelength SMF Module)
- Standard Factory Suffix Profiles:
- -D: Universal Optical Adapter / Power Cord Profile
- -US / -EU / -UK: AC Mains configuration
- Optional Sub-codes: /PM (Optical Power Monitor), /SLS (Stabilized Light Source), /VLS (Visible Laser Source 650nm), /PL (Built-in Thermal Printer & 10/100Base-TX LAN interface)
Technical Specifications
| Parameter / Specification Category | Technical Rating & Value |
|---|---|
| Optical Center Wavelengths | 1310 nm ± 25 nm, 1550 nm ± 25 nm |
| Applicable Fiber Types | Single-Mode (SMF) complying with ITU-T G.652, G.655, and G.657 standards |
| Dynamic Range (SNR = 1) | 34 dB (at 1310 nm) / 32 dB (at 1550 nm) (Typical: 36 dB / 34 dB) |
| Event Dead Zone | 0.8 m maximum (at pulse width 3 ns, return loss ≥ 45 dB) |
| Attenuation Dead Zone | 7 m typical (1310 nm) / 8 m typical (1550 nm) (at pulse width 10 ns, return loss ≥ 45 dB) |
| Selectable Distance Ranges | 500 m, 1 km, 2 km, 5 km, 10 km, 20 km, 50 km, 100 km, 200 km, 300 km, 400 km, 512 km |
| Selectable Pulse Widths | 3 ns, 10 ns, 20 ns, 50 ns, 100 ns, 200 ns, 500 ns, 1 µs, 2 µs, 5 µs, 10 µs, 20 µs |
| Readout & Sampling Resolution | Minimum sampling resolution: 5 cm; Readout resolution: 0.001 dB min |
| Distance Measurement Accuracy | ±(0.75 m + measurement distance × 2 × 10−5 + sampling resolution) |
| Loss Measurement Accuracy | ±0.05 dB/dB (Line loss ≤ 1 dB: accuracy within ±0.05 dB) |
| Display Terminal & UI | 8.4-inch color transreflective TFT LCD, 640 × 480 pixels (VGA) |
| External Interfaces & Terminals | 1× USB Type-A (Host: memory stick, barcode reader); 1× USB Type-B (Mini/Peripheral); Optional RJ-45 Ethernet 10/100Base-TX |
| Optical Output Port & Adapters | Universal Optical Interface; Interchangeable screw-in adapters (FC, SC, LC, ST type) |
| Internal Memory Storage | Internal flash: ≥ 1,000 waveforms; External: USB flash memory (FAT32) |
| AC Power Supply Input | 100 to 240 VAC, 50/60 Hz; Max power consumption: 70 W (while running, charging, and printing) |
| Battery Chemistry & Endurance | Rechargeable Lithium-Ion pack; Runtime: approx. 6 hours (Bellcore GR-196-CORE standard); Charge time: ~5 hours |
| Operating Temperature & Humidity | 0°C to +45°C (0°C to +35°C during battery recharge); ≤ 85% RH (non-condensing) |
| Storage Range & Ingress Rating | −20°C to +60°C; Ruggedized elastomer corner casing against shock/vibration |
| Dimensions & Physical Weight | 287 mm (W) × 197 mm (H) × 85 mm (D); Weight: approx. 2.8 kg (excluding options) |
Equipment Compatibility
- Field Fiber Standards: Standard Single-Mode Fiber (SMF, ITU-T G.652), Dispersion-Shifted Fiber (ITU-T G.653), Non-Zero Dispersion Shifted Fiber (NZDSF, ITU-T G.655), and Bend-Insensitive Fiber (ITU-T G.657.A1/A2/B3).
- Marine Vessel & Offshore Control Systems:
- Kongsberg Maritime K-Chief 600 / K-Thrust redundant optical ring networks.
- Wärtsilä NACOS Platinum Bridge and Integrated Automation System (IAS) dual optical bus.
- Offshore Subsea umbilical dynamic cable bundles (ROV command conduits, subsea Xmas tree telemetry).
- Shipboard ECDIS, VDR (Voyage Data Recorder), and CCTV optical lines over multi-core armored G.652 trunks.
- Optical Connector Standards (via interchangeable adapters): SC/PC, SC/APC, FC/PC, FC/APC, LC/PC, LC/APC, and ST/PC.
- PC Interfacing & Post-Processing Analysis: Yokogawa AQ7932 OTDR Emulation Software, FiberViewerMax, and standard Telcordia GR-196-CORE / Bellcore (.SOR) file architectures.
Part Number Cross-References
- Direct Yokogawa Replacement / Predecessor:
- Replaces: Yokogawa AQ7260 series / AQ7270 (735022 module)
- Upgrades to: Yokogawa AQ7280 Series (Mainframe AQ7280 with AQ7282A / AQ7283A module)
- Equivalent Third-Party Optical Testers:
- EXFO FTB-1v2 / FTB-720C-SM1 (1310/1550nm Access OTDR)
- Viavi / JDSU MTS-2000 / MTS-4000 (with 4126 MA / LA 1310/1550nm modules)
- Anritsu MT9083 Series (MT9083A2 / MT9083B2 Access Master)
Frequently Asked Questions
What makes the Yokogawa 735032 module different from the 735033 and 735034 modules?
The 735032 is the standard dual-wavelength (1310/1550 nm) model offering 34/32 dB dynamic range, optimized for local access networks, inter-compartment runs, and shipboard plants up to 40 km. In contrast, the 735033 (40/38 dB) and 735034 (43/41 dB) provide higher dynamic ranges suited for long-haul core networks and deep splitter metro backbones where high attenuation must be overcome.
Can I run tests on live, operational fiber cables with this instrument?
No, the 735032 module is designed for “dark fiber” (unlit) installation, acceptance testing, and offline troubleshooting. To test active, live fibers containing live data signals, you require a specialized maintenance wavelength unit (such as the Yokogawa 735031, 735036, or 735037) equipped with a dedicated 1625 nm or 1650 nm filtered laser port.
How do I change between SC, LC, FC, and ST connectors on the optical port?
The AQ7275 uses a universal connector base. You can unscrew the optical adapter ring by hand without disassembling the chassis. Swap the adapter collar for an optional SC, FC, LC, or ST type adapter depending on your patch panel termination.
Can the AQ7275-735032 measure multimode (MMF) 50/125 or 62.5/125 fibers?
The 735032 is calibrated specifically for single-mode fiber (9/125 µm core). Testing multimode cores with this unit will produce inaccurate trace reflections, severe modal dispersion, and false distance/loss calculations. For multimode installations, use the Yokogawa 735041 multimode module (850/1300 nm).
What output formats are supported for trace reports?
Traces can be saved internally or to an external USB flash drive in standard Telcordia Bellcore GR-196-CORE / SR-4731 (.SOR) file format, raw binary (.TRD), or comma-separated value (.CSV) format. These files are compatible with standard optical analysis and marine commissioning software suites.
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