1. Product Overview
The SPTK-3302SJ is an 8-in-1 Mini OTDR (Mini-Pro OTDR) introduced by SOPTO, specifically designed for the construction and maintenance of FTTx and access networks. This product can test breakpoint positions, fiber length, and loss distribution in fiber links, and features automatic incoming light detection and one-key automatic test functions. The unit is equipped with a 3.5-inch color LCD screen and adopts a new plastic housing design with shock-proof and drop-proof characteristics.
This device highly integrates 8 functions: OTDR (Optical Time Domain Reflectometer), Event Map, Stable Light Source (LS), Optical Power Meter (OPM), Visual Fault Locator (VFL), RJ45 cable sequence test, Insertion Loss measurement (IL), and Lighting. It features built-in storage for over 600 test records, supports TF card expansion and USB data transfer, and is equipped with a 4000mAh polymer lithium battery, making it an ideal choice for long-term field construction work.
1310/1550nm
Dual Wavelength
22/20dB
Dynamic Range
60km
Max Range
8
Functions in One
4000mAh
Lithium Battery
2. Key Features
- 8-in-1 High Integration: A single device integrates 8 functions — OTDR, Event Map, Stable Light Source, Optical Power Meter, VFL, RJ45 cable sequence test, Insertion Loss measurement, and Lighting — reducing the number of devices to carry in the field.
- Dual Wavelength Testing: Supports 1310nm and 1550nm dual wavelength OTDR testing, and also supports 1550nm online test mode, meeting the detection needs of different fiber links.
- One-Key Automatic Test: Features automatic incoming light detection and one-key automatic test functions, simplifying the operation process and lowering the usage barrier.
- High Dynamic Range: 1310nm dynamic range 22dB, 1550nm dynamic range 20dB, and 1550nm online mode up to 24dB, covering longer-distance fiber link testing.
- Low Dead Zone Design: Event dead zone of only 8m and attenuation dead zone of 15m, capable of distinguishing two closely spaced fault event points.
- Shock-Proof and Drop-Proof Housing: Adopts a new plastic housing design, suitable for field construction environments, with a total weight not exceeding 400g.
- Large Capacity Storage: Built-in storage can save over 600 test records, supports TF card expansion and MicroUSB data export, with files in SOR standard format.
3. OTDR Specifications
The following are the core parameters of the SPTK-3302SJ OTDR module. Test conditions: 25°C±2°C, maximum pulse width, averaging time ≥3 minutes.
| Parameter | Specification | 1550nm Online |
|---|---|---|
| Model | SPTK-3302SJ | |
| Wavelength | 1310/1550nm | 1550nm |
| Fiber Type | G.652 Single Mode Fiber | |
| Dynamic Range | 22dB/20dB | 24dB |
| Event Dead Zone | 8m | |
| Attenuation Dead Zone | 15m | |
| Test Range | 10m ~ 60km | |
| Pulse Width | 5ns ~ 10000ns | |
| Ranging Accuracy | ±(1m + sampling interval + 0.005%×test distance) | |
| Loss Accuracy | ±0.2dB/dB | |
| Sampling Points | 16k ~ 86k | |
| Sampling Resolution | 0.7m | |
| Reflection Accuracy | ±3dB | |
| Data Storage | Built-in: ≥600 records; External: TF card | |
| Laser Safety Level | Class II | |
| File Format | SOR standard file format | |
| Connector | FC/PC (replaceable with SC, ST) | |
4. Integrated Module Specifications
In addition to the OTDR, the SPTK-3302SJ also integrates the following functional modules. The independent parameters of each module are as follows.
Optical Power Meter (OPM)
| Parameter | Specification |
|---|---|
| Wavelength Range | 800nm ~ 1700nm |
| Interface Type | Universal interface FC/SC/ST |
| Test Range | -50dBm ~ +26dBm |
| Uncertainty | ±5% |
| Frequency Identification | CW |
| Calibration Wavelengths | 850/1270/1300/1310/1490/1550/1577/1625nm |
Stable Light Source (LS)
| Parameter | Specification | 1550nm Online |
|---|---|---|
| Laser Type | FP-LD | |
| Output Wavelength | 1310/1550nm | 1550nm |
| Output Power | ≥-5dBm | |
| Modulation Frequency | CW/270/1k/2kHz | |
| Stability | CW, ±0.5dB/15min (measured after 15 min preheating) | |
| Connector | FC/APC (replaceable with SC, ST) | |
Visual Fault Locator (VFL)
| Parameter | Specification |
|---|---|
| Operating Wavelength | 650nm±20nm |
| Output Power | ≥10mW |
| Operating Mode | CW/1Hz/2Hz |
| Connector | FC/SC/ST |
5. Other Parameters
| Parameter | Specification |
|---|---|
| Display | 3.5-inch color LCD |
| Data Interface | MicroUSB |
| External Storage | TF card |
| Power Supply | Polymer lithium battery: 3.7V, 4000mAh; Power adapter: 5V DC, 1A |
| Battery Life | Standby >20h; Measurement time >12h |
| Operating Temperature | -10°C ~ +50°C |
| Storage Temperature | -40°C ~ +70°C |
| Relative Humidity | 0 ~ 95% (non-condensing) |
| Weight | ≤400g |
| Dimensions | 173mm × 85mm × 42mm |
| Integrated Functions | OTDR / Event Map / OPM / LS / VFL / IL / RJ45 sequence / Lighting |
6. Standard Configuration
| No. | Name | Qty | Remarks |
|---|---|---|---|
| 1 | Main unit | 1 | — |
| 2 | Power adapter | 1 | Includes battery |
| 3 | Data cable | 1 | — |
| 4 | User manual | 1 | — |
| 5 | SC/UPC connector | 1 | — |
| 6 | Calibration certificate | 1 | — |
| 7 | Qualification certificate / service guarantee card | 1 | — |
| 8 | Clean cotton slices | 10 | — |
| 9 | Instrument bag | 1 | — |
7. Ordering Information
| Model | Product Description |
|---|---|
| SPTK-3302SJ | 8-in-1 Mini OTDR, 1310/1550nm dual wavelength, with online 1550nm test mode |
For customized services, contact SOPTO via:
Email: info@s-opto.com
Website: www.s-opto.com
8. Glossary
| Abbreviation | Full Name | Description |
|---|---|---|
| OTDR | Optical Time Domain Reflectometer | Optical Time Domain Reflectometer; detects fiber link status by emitting light pulses and analyzing Rayleigh backscattering and Fresnel reflection signals. |
| OPM | Optical Power Meter | Optical Power Meter; measures the power of optical signals in fiber. |
| LS | Light Source | Stable Light Source; provides stable optical signal output, used with an optical power meter for insertion loss measurement. |
| VFL | Visual Fault Locator | Visual Fault Locator; detects fault points in fiber links using red visible light. |
| IL | Insertion Loss | Insertion Loss; the power attenuation that occurs when an optical signal passes through a device or link. |
| FTTx | Fiber To The x | Fiber To The x; a general term for various fiber access network deployment forms (e.g., FTTH, FTTB, etc.). |
| SMF | Single Mode Fiber | Single Mode Fiber; a fiber that allows only one propagation mode, suitable for long-distance communication. |
| SOR | Simple Optical Receiver data format | Standard file format for OTDR test data, recognizable by multiple fiber analysis software programs. |
| RJ45 | Registered Jack 45 | Network cable interface standard; used here for the cable sequence test function. |
