Fiber Optic Desktop Insertion Loss＆ Return Loss Test Machine
Fiber Optic Desktop Insertion Loss＆ Return Loss Test Machine with color screen has stable and reliable performance, which integrates stable light source, high-precision power meter, insertion loss meter and return loss meter into one multifunction instrument. Based on domestic customers’ requirements, R&D team combined advantages of same type instrument within China/overseas and then developed the high-precision tester by several years’s unremitting effort. With high cost effective and state of art characteristics, it can be widely used for OEM device verification, research institutions R&D and construction maintenance in optical fiber/passive devices/optical communication system industries where demand plug loss, return loss and stability measurements
Advantages:
l Advanced OS
Multiple display, easy handling, fast response and stability
l High precision
Stable output power/high detection speed/wide measurement range
l Wavelength synchronous switching
l Light source and power meter achieve wavelength synchronous switching under insertion/return loss mode
l Multiple working modes
Return loss mode/insertion loss mode/power meter/dual-wavelength testing
l Color recognition for test result
Different colors correspond different test results. Pass/Fail is available by just a glance. P
l Easy handling
Return loss/insertion loss are synchronously measured. No buttons switching
l Rich display interfaces
High definition LCD plus multi-level test interfaces bring rich visual experience and easing visual fatigue
l Perfect outward design
Electro-magnetic proofing by metal covering. Durable buttons bring comfortable finger handling experience
l Smart removable interfaces of light source and power meter
Easy to be disassembled to clean optical detector or replace with others adapters(FC/SC/ST/2.5mm general/1.25mm general/MT-RJ) or clean inside APC adapter. Note only need to rotate light source/power meter interface to disassemble it
l Clock display
Time is available to reasonably organize work
l Communication interfaces
The tester can connect to computer and transmit test data to it. Specialized program give Pass/Fail result of jumper. Test data is available for analysis, readout and record.
- Technical parameters
| Model | Insertion and return loss tester |
| Light source wavelength | MM：850nm SM：1310/1550nm |
| Optical return loss test | |
| Wavelength | 1310/1550nm |
| Measurement range | 0~75dB |
| Calibration wavelength | 1310/1550nm |
| Measurement tolerance | ±0.4dB |
| Output stability | 0.02dB /hour（@250C) |
| Interface types | MM:850nm FC/UPC ；SM: 1310/1550nm FC/APC |
| Optical insertion loss test | |
| Calibration wavelength | 850/980/1300/1310/1490/1550/1625nm |
| Measurement range | +3~-80dBm |
| Measurement tolerance | ±0.03dB |
| Display resolution | Logarithmic: 0.01dB; linear: 0.001nW/μW/mW |
| Test mode | Linear and non-linear |
| Interface types | Removable: FC/SC/ST/generalΦ2.5mm/ generalΦ1.25mm adapters |
| Screen | Color LCD |
| Resolution | 320*240 |
| Communication interface | USB |
| Power supply | AC 90-260V |
| Work environment | temperature：-50C~+550C ;humidity |
| Storage environment | temperature：-200C~+700C ;humidity |
| Dimensions | 265X265X140mm |
| Weight | 3.5kg |
- Instruction of buttons on the panel
(1) λ: switch of light source wavelength
(2) Ref: calibrate return loss reference value—–long time press
(3) BL:clear button for return loss
(4) dBm/dB: clear button for insertion loss
(5) Set: Set up or conversion
(6) +: increase
(7) –: decrease
(8) Enter : confirm
(9) 850nm：850nm multimode light source output（FC/UPC）
(10)1310/1550nm：1310/1550nm single mode light source output（FC/APC）
(11)Power meter interface
MeFiberOptic.Com is one of the largest and best fiber optic desktop insertion loss＆ return loss test machine manufacturers and suppliers with rich experience. Welcome to buy our high quality products or wholesale our customized fiber optic desktop insertion loss＆ return loss test machine in stock with our factory. Also, free sample is also available if necessary.
What Is Insertion Loss?
In telecommunications, insertion loss refers to the loss of signal power, calculated as a ratio in dB (decibel), resulting from inserting a device in a transmission line or optical fiber. It can also be referred to as attenuation, which indicates how much the signal loss is by comparing the input power to the output power. A lower insertion loss value indicates a better insertion loss performance. For example, an insertion loss of 0.3dB is better than 0.5dB.
What Is Return Loss?
When a signal is transmitted through a transmission line, some signal power is always reflected or returned to the source due to discontinuities in the transmission line. The discontinuity can be a mismatch with the terminating load or with a device inserted in the line. Return loss refers to the loss of reflected signal power. Therefore, the higher the return loss is, the lower the amount of reflection will be. That is to say, the fiber connector will have better performance with a higher value of RL.
What Causes Poor Insertion Loss and Return Loss?
Ideally speaking, if the fiber patch cable has no connections, then the minimum loss will be realized—a continuous, straight-through glass fiber from Point A to Point B with no interruptions. However, the fiber optic networks are requiring connectors for modularity. The desired low IL and high RL performance are reduced consequently on account of the following three factors:
End-face Quality and Cleanliness
Evidently, fiber end-face defects like scratches, pits, cracks, and particle contamination will have a direct impact on the performance, contributing to poor insertion/return loss. Any irregularity that impedes light transmission from one fiber to the other will negatively affect IL and RL.
Misalignment Between the Two Cores
The main task of the connector is to hold the fibers precisely, ensuring the core of one fiber will align neatly and accurately with the core of the other fiber, so as to make every connector to mate with another connector with precise core alignment and core-to-core contact. Normally speaking, the smaller the ferrule hole diameter, the more precisely the fiber will be centered in the ferrule. If the ferrule hole is not perfectly centered, the fiber it holds will obviously never be perfectly centered. Therefore, the misalignment between two cores often happens when the fibers with the light-carrying cores are not aligned perfectly with each other, resulting in poor IL/RL.
Poor Core-to-core Contact
In order to achieve the desired low IL and high RL, optimized core-to-core contact must be achieved and maintained. Different polishing styles of fiber connectors have varied core-to-core contact performance regarding the connector’s insertion loss and return loss. Usually, the insertion loss of PC, UPC, and APC connectors is less than 0.3dB. However, UPC connectors have the lowest IL due to the smallest air gap while APC connectors have the highest RL due to the beveled fiber end-face. PC vs UPC vs APC Connector will help you to select the proper fiber connect type.
Fiber Optic Desktop Insertion Loss＆ Return Loss Test Machine
