ATI-20 Optical Fiber Identifier



ATI-20 Optical Fiber Identifier can quickly identify the direction of transmitted fiber and display the relative power without any damages to the bending fiber. When the traffic is present, the intermittently audible tone is activated.
ATI-20 Optical Fiber Identifier can also recognize the modulation of 270Hz,1kHz and 2kHz. When they are used to detect the frequency, the continuously audible tone is activated.There are four adapter heads available: Ø0.25, Ø0.9, Ø2.0 and Ø3.0.

1. Lower power indication

2. Easy-to-replace adapters

3. Displays the relative power

4. More accurate testing with Sunshade

5. Easy-to-use with “ONE KEY” operation.

6. Durable metal housing and quality construction

7. Efficiently identifies the traffic direction and frequency tone (270Hz, 1KHz, 2KHz) with audible warning.


Recognizable Wavelength Range 800 to 1700nm
Recognizable Signal Type CW, 2kHz, 1kHz, 270Hz±5%
Detector Type Ø1mm InGaAs 2pcs
Clamp Type Ø0.25 for bare fiber, Ø0.9 for Ø0.9mm cable,

Ø2.0 for Ø2.0mm cable, Ø3.0 for Ø3.0mm cable

Signal Direction Left & right LED
Signal Direction Test Range (CW/0.9mm fiber) -46~10dBm (1310nm); -50~10dBm (1550nm)
Signal Power Test Range (CW/0.9mm fiber) -50~10dBm
Signal Frequency Display 270Hz, 1kHz, 2kHz
Frequency Test Range

(Average Value)

Ø0.9, Ø2.0, Ø3.0 -30~0dBm (270Hz, 1kHz)
-25~0dBm (2kHz)
Ø0.25 -25~0dBm (1kHz, 2kHz)
-20~0dBm (2kHz)
Insertion Loss (Typical Value) 0.8dB (1310nm); 2.5dB (1550nm)
Alkaline Battery 9V
Operating Temperature -10 to +60℃
Storage Temperature -25 to +70℃
Dimension 196*30*27mm
Weight 200g
Standard Accessories:
4*adapter heads, alkaline battery, sunshade, cotton stick, carrying bag, user manual