GAOTek OFM-102 with Unidirectional Focus and 400x Magnification

GAOTek’s Optical Fiber Microscope is used for the inspection of the end-face of the fiber optic connectors and provides the network personnel with high-performance fiber inspection solutions, featuring magnification of 125μm fibers to 400 times.



Key Features

  • One-way focus control for instant detection, produce an image in seconds.
  • 35 assorted tips available to test or customize.
  • 95% tips interchangeability in-between probes.
  • 95% Image centralization on screen.
  • Precise resolution (<1μm), no shadow or dark edge around the screen.
  • High definition image and video, no noise or flash.
  • Strong performance under stress operation.
  • Consistent alignment, simple to operate.
  • Unidirectional focusing, quick and accurate imaging.
  • 400X magnification, clear image.
  • Small, light, and portable.
  • Changeable high capacity batteries.
  • Photo, video, and record tested fiber.


  • End face inspection in patch cord / bulkhead-mounted equipment/module transceiver etc.
  • End face inspection of assorted connectors PC/APC, MPO/MTRJ etc.
  • End face inspection of connectors at different angles for the bottom of patch panels or hard-to-access places.



Technical Specifications

Fiber Microscope Probe
Resolution<1 μm
View FieldX: 0.3165 mm

Y: 0.285 mm

Tips ConnectionCone contact
Focus DirectionUnidirectional
Focus Speed2 s ~ 6 s
Output PortDual Pins AV Port
Range<0.11 in (3 mm)
Output TypePAL or NTSC or USB (optional)
Light SourceCoaxial blue LED
Life time> 100,000 hr
Size7.09 in x 0.87 in x 2.20 in (180 mm x 22 mm x 56 mm)
Weight 0.242 lbs (110 g)
Image Sensor1/3 in SONY B/W CCD
Temperature-4 °F ~ 122 °F  (-20 ℃ ~ 50 ℃)
HumidityMaximum to 90% relative humidity, no condenses
Screen2.7 inch
Enlarged Size0.86 in (22 mm)
PictureSingle-framed 640×480 JPG
Timer5 / 15 / 30 mins selections
BatteriesLi-ion 1800 mAh
LanguagesEnglish / Chinese / Russian
TF StorageSupports 32 GB
Input PortAV
Output PortUSB 2.0
Weight0.187 lbs (85 g)
Dimension3.07 in x 0.87 in x 2.20 in  (78 mm x 22 mm x 56 mm)
Magnification with respect to corresponding display
Size (inch)2.73.5810.4
ParametersEnlarged Diameter21.
Note: All the image size is based on fiber end face with diameter of 125 μm and measured directly;

The magnification is derived from actual image size divided by diameter length of 125μm.

Packaging List

S.No.Item DescriptionQuantity
1Fiber microscope probe1
22.7 inch display1
3Li-ion batteries2
5USB cable1
6Earphone cable1
78G TF Reader1
8Soft case1
9SC-PC-F (For SC/PC adaptor)1
10FC-PC-F (For FC/PC adaptor)1
11LC-PC-F (For LC/PC adaptor)1
122.5PC-M (For 2.5 mm connectors, SC/PC, FC/PC, ST/PC)1

Optional Accessories

Adapter Tip TypeDescription
1.25 PC-MTo test the 1.25 mm diameter male fiber PC end face
ST-PC-FTo test the ST female fiber PC end face
MU-PC-FTo test the MU female fiber PC end face
SMA-MTo test the SMA male fiber PC end face
E2000-F-PCTo test the E2000 fiber PC end face
MTRJ-PC-FTo test the MTRJ fiber PC end face
MPO-PC-FTo test MPO fiber PC end face
FC-F-APCTo test FC female APC end face
SC-F-APCTo test SC female APC end face
2.5M-APCTo test 2.5mm diameter male APC end face
LC-APC-FTo test LC female APC end face
E2000-APC-FTo test E2000 female APC end face
MPO-PC/APC-FTo test MPO PC/APC end face
SC-PC-60F60 angle to test SC female PC end face
FC-PC-60F60 angle to test FC female PC end face
LC-PC-60F60 angle to test LC female PC end face
LC-APC-60F60 angle to test LC female APC end face
SC-APC-60F60 angle to test SC female APC end face
E2000-PC-60F60 angle to test E2000 female PC end face




Product Description

Fiber Microscope Probe (GAO-OFM-102-A)

GAO-OFM-102-A Probe initially enlarges the fiber end face through optical amplification, then output the image via CCD electronically. Due to the complicated and precise structure, the magnification is decided firstly by the multiple of objective lens and size of CCD inside the probe and varies afterward with its corresponding output monitor. In other words, the display is the ultimate factor responsible for the magnification. The bigger the size of the display, the larger magnification a whole set microscope hold. The general size of monitors we offer includes 2.5, 8 inches two type for handheld on-site inspection, 10.4 inches for bench-top labs or factory inspection, or wifi one for laptop inspection.

The table below indicates different magnification with respect to the corresponding display.

Size (inch)2.73.5810.4
ParametersEnlarged Diameter21.
Note: All the image size is based on fiber end face with a diameter of 125 μm and measured directly;

The magnification is derived from actual image size divided by diameter length of 125μm.

Field of View:  The field for ferrule detected can reach up to 0.31*0.25mm, which includes the end face with 125 μm diameter in the central and 300μm area around. More fields can be viewed when adjusting the probe slightly.


Handle Body the handle houses CCD camera, ray apparatus structure, optical routing system, coaxial lamp-house, focus control, video output, and power supply system etc. Default output signal PAL, an optional signal for NTSC or USB through either explicit or embedded devices. The inner structure of handle body is compact and complex that, a fever may be caused for a long time work. This isn’t a mechanical defect but a normal phenomenon. Any action in disassembling of the probe without authorization will lose the service of troubleshooting.

1) Handle: also named as a probe, all the optical routines are concentrated inside the handle, responsible for the fiber imaging.
2) Focus control: control for definition adjust of the image.
3) Assembly nut: lock the tips to keep alignment with the probe.
4) Assembly: central kits to imaging alignment.
5) Lens-bar: central kits to tips usage and imaging.
6) Cable: wire output to connect the terminal, please note that repeated bending resulting in damage or break to the signal transmission should be avoided.

Tips Selection

Wide ranges of adapter tips are available to reach assorted connectors inspection, from the common use of 2.5PC-M, LC-FC-F, SC-PC-F, FC-PC-F to specific ones as E2000-PC-F, MPO-APC-F etc., or angle tips for bulkhead connector, patch cord of PC /APC etc., hard-to-access testing points.

Tips Installation and Switch

Installation: Choose an appropriate tip with regard to the connector inspection. Loose the nut and put the tip in the front of the probe along with the lens-bar. Screw the nut and lock the tip.

Switch: Loose the nut firstly to remove the tip and switch with an alternative one.

Please note:

 Try to avoid the friction incurred to the lens-bar for badly damage on imaging.
 Loose the nut completely if the tip is attached too tightly.
 Screw the nut completely to lock the tip.
 Lens-bar may be contaminated after a long-time work, use the cotton or swap to clean the surface as below.


Video Monitor (GAO-OFM-102-B)

GAO-OFM-102-B Viewer not only keeps the single-frame capture/video/store functions but it can also give sounds notification (power on/off/ TF memory card/signal status). It can be carried along the wrist whenever and wherever with ease for on-site inspection, and the connector applies Audio & Video standard to secure the connection.
Also please take care the plug-in direction, any reverse or opposite operation will cause no input signal.

1. Power on/off/ Image Capture                   8. Speaker
2. Video                                                              9. Microphone
3. Left Arrow                                                     10. Video/Audio input
4. Right Arrow                                                  11. Charging indicator
5. Return                                                            12. Video indicator
6. Confirm                                                          13.Video/Audio output
7. TF Slot                                                            14.Charging/USB connector                                        15. Lock


Power on: Press the button in the upper right hand corner for 3-5 seconds, to power on, and a check-up page shows up afterward. And make sure the TF memory card (default 8G) has been put in before the display, or sounds and texts notifications would act on. The charging status shows up in the bottom left hand corner, date time shows up in the upper right hand corner and record period/memory status shows up in the bottom right-hand corner.

Image Adjust: 

 Press “Ok” to choose Image adjustment of “Brightness/Contrast/Color”;
 Press “Ok” again to switch the in-between options;
 Press arrows to adjust to an appropriate value;
 Press “ESC” to return to the check-up page.

Capture and Video:

 Press “Capture” to save the image, files will be saved in the TF on real-time name.
 Press “Video” to record the video and “ESC” to stop, files will be saved in the TF on real-time name.

Play back:

Return to the check-up page, press “Ok” to choose “Video/Image” mode for paly back.
 Arrows: press arrows key to adjust the volume;
 Pause: press “Ok” to pause;
 Delete: press “●” and “Ok” to delete files.


Return to the check-up page, press “Ok” to choose the setting mode for adjustment.

Please note:
 Please charge the display periodically to avoid any battery leak or damage;
 Please note the plug-in direction for the AV connector, the upper one is for signal transmission while the down one is for holding purpose. Any opposite or reverse operation will cause no input signal.

 Please note first-in files will be auto overlapped if the memory is full for the further record.

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