
Visual Fault Locators
1. SUN-VFL Series Pen-design Visual Fault Locators
2. SUN-OFC-B Handheld Visual Fault Locator
1. SUN-VFL Series Pen-design Visual Fault Locators
SUN Telecom’s Pen-design Visual Fault Locator, pen-size and light, outputs the visible red laser, and can be used for locating optical broken point which OTDR can’t find and area of high loss caused by bending. It is suitable for both single mode and multimode fiber.

Figure-1 Pen-design Visual Fault Locator
(SUN-VFL250)
Main Features:
• Used for locating broken point in fibers
• Equipped with a 650-nm visible laser diode
• Operated in continuous or pulse modes for clear noticeable results
• Operating mode shown by the Status LED indicator
• Battery power turned on/off by the power switch on the end
• Clip pocket-size pen design
Specifications:
| Parameters |
Specifications |
| Type |
SUN-VFL250 |
SUN-VFL1000/S |
SUN-VFL-1000 |
| Central Wavelength (nm) |
650 |
660 |
660 |
| Light Source |
Class 3A laser diode |
Class 3b laser diode |
Class 3b laser diode |
| Fiber Compatibility |
Multimode and single mode |
| Output Power (mw) |
>0.5 (-3dBm) |
> 5 |
>10 |
| Detection Distance (km) |
6 |
10 |
12 |
| Fiber Compatibility |
Multimode and single mode |
Output Port |
Universal adaptor for connectors with 2.5mm ferrules;
Hybrid adaptor (SUN-VFL-AD) for transforming 2.5mm ferrule (FC/SC/ST) to 1.25mm ferrule (LC/MU) |
Output Mode |
Continuous or flashing (2-3Hz) |
Spectral Width (nm) |
< 10 |
Power Supply |
Battery: 2 x 1.5V AAA Alkaline |
| Battery Operation Time(hrs) |
40 (typical in coninuous mode) |
8 (typical in continuous mode) |
8 (typical in continuous mode) |
| Operation Temp. (°C) |
0 ~ +40
|
| Operation Humidity |
0 ~ +95% RH (non-condensing) |
| Storage Temp. (°C) |
-20 ~ +60 |
| Storage Humidity |
0 ~ +95% RH (non-condensing) |
| Dimensions (mm) |
Φ13.5 x 170 |
Weight (g) |
88 (including battery) |
Low Battery Indicator |
The Status LED will turn to red when batteries are low |
Ordering Information:
| Part No. |
Descriptions |
| SUN-VFL250 |
Detection Distance 6km, universal adaptor for connectors with 2.5mm
ferrules (FC/SC/ST) and battery power supply |
| SUN-VFL1000 |
Detection Distance 12km, universal adaptor for connectors with 2.5mm
ferrules (FC/SC/ST) and battery power supply |
| SUN-VFL1000/S |
Detection Distance 10km, universal adaptor for connectors with 2.5mm
ferrules (FC/SC/ST) and battery power supply |
| SUN-VFL-AD |
Hybrid adaptor for transforming 2.5mm ferrule (FC/SC/ST) to 1.25mm
ferrule (LC/MU). |
 |
Figure-2 Pen-design Visual Fault Locator and adaptor
(SUN-VFL250 and SUN-VFL-AD) |
2. SUN-OFC-B Handheld Visual Fault Locator Top
SUN Telecom's Handheld Visual Fault Locator adopts the most advanced laser technology
and microelectronic technology, and outputs the visible red laser. It can be used for locating
optical broken point which OTDR can’t find and area of high loss caused by bending. It is
suitable for both single mode and multimode fiber.
Features:
High reliability
Easy to find broken or bending spot with eyes
SC/ST/FC adapters
Light and handy
Rechargeable battery and night illumination for field work |

|
| |
Figure-3 Handheld Visual Fault Locator
(SUN-OFC-B) |
Specifications:
| Parameters |
Specifications |
Laser Emitter |
F-P LD |
| Wavelength (nm) |
650 |
| Output Power (mW) |
≥ 0.5 |
| Light Output |
Continuous output / 2Hz modulation output |
| Detection Range (km) |
≤5 |
| Recharge Time (hrs) |
3 |
| Battery Operation Time (hrs) |
10 |
| Charge Time (hrs) |
4.5 |
| Optical Adapter |
FC/SC/ST |
| Operation Temp. (°C) |
-10 ~ +60 |
Storage Temp. (°C) |
-20 ~ +70 |
| Power Supply |
Two 1.5V AA Ni-MH batteries (rechargeable); output power: 3.0V;
AC 110-240V to DC 3V power adaptor |
| Dimensions (mm) |
170x90x42 |
| Weight (g) |
450 |
 |
| Figure-4 SUN-OFC-B Standard Package |