Product overview
The handheld stabilized light source can provide a stable output of 1 to 4 wavelengths according to user’s requirements, which can provide 650nm visible red light, or provide dual wavelength laser output of 1310nm and 1550nm to single-mode fiber measurement, or provide 850/1300/1310/1550nm four wavelength laser outputs at the same time, which is an ideal test instrument for fiber optic engineering.
Product features
Highly stable multi-wavelength single (multi)mode laser output, CW mode or modulation mode
The large LCD shows the operating wavelength status
Continuous working time of up to 45 hours
Single-button switching of the operating wavelength, flexible and convenient operation
You can set an automatic shutdown
Technical specifications
| Gauge model | General configuration | Dedicated to PON light sources | Other |
| Operating wavelength(nm) | 1310/1550 | 1310/1490/1550 | Type D:850/1310/1550
Type E:1310/1490/1550 Type F:1310/1550/1625 |
| Light-emitting devices | FP-LD | ||
| Optical output power(dBm) | ≥-5/≥-5 | ≥-5/≥-5/≥-5 | Optional within 0DB to 5DB |
| Modulation | CW/270/1K/2K | ||
| Fiber category | SM,MM | ||
| Connector | FC/PC | ||
| Operating temperature(℃) | -10~+60 | ||
| Storage temperature(℃) | -25~+70 | ||
| Automatic shutdown time(min) | 10 | ||
| The battery lasts for continuous operating time(h) | 45 | ||
| Dimensions(mm) | 190×100×48 | ||
| Power supply | Rechargeable lithium battery/dry cell battery | ||
| Weight(g) | 400 | ||
- Optical output
An FC-type fiber optic connector can be used to connect to the signal receiving end of the device under test
- LCD display
The LCD displays the value of the light wavelength of the output
- ON/OFF button
Press the button to power on the system when the system is powered off.
Press and hold power off while the system is on.
- AUTOOFF button
Turn the auto-shutdown feature on or off. If the “Auto Shutdown Sign” is displayed, the auto shutdown function is turned on, and the auto shutdown will be automatically after 10 minutes; If it is not displayed, the auto-shutdown function is turned off.

- WAVE button
Pressing the button, you can select a different output wavelength value, which will be displayed on the LCD
- MODE button
Toggles the modulation frequency of the light source. Switch between CW, 270Hz, 1000Hz, 2000Hz
- LIGHT button
Press the button to turn the backlight on or off
Lithium battery rechargeable function
During normal operation, the power indicator sign is not displayed; When the battery is low, the battery indicator flashes every second, and will automatically shut down after ten flashes; At this time, the charger directly connected to the instrument can be charged (as shown in the figure on the right), which can save the trouble of replacing the battery and related costs.

- Connect the fiber optic connector to the optical output port
- Press the ON/OFF key to open, and the working light is on
- Adjust the output wavelength of the light source by pressing the WAVE key
- Adjust the modulation frequency of the light source by pressing the MODE key
- The various working states of the handheld stabilized light source will be displayed on the liquid crystal of the instrument. When the battery is low, the low battery flag flashes every second, and shuts down after flashing ten times.
- Shutdown: Press THE ON/OFF Button, the LED is off, the LCD doesn’t show, shut down
Precautions
- Avoid looking directly at the output while working, the laser will hurt your eyes
- If it is not used for a long time, the user can use a dust cap to protect the light output port to avoid the output from being exposed to air and being polluted
- When the stable light source is used for a period of time, the light output port may have dirt adhered to the internal sleeve, resulting in a decrease in the output optical power, then the user can use a cotton swab stained with alcohol to remove the dirt, and then use a dry cotton swab to remove the traces, if it is still impossible to clean, please contact the company directly
- If it is not used for a long time, please take out the battery in time to avoid the battery from being affected by moisture
- Other faults please contact the company directly, do not disassemble the instrument to repair yourself, so as not to cause more serious failures. For the instruments that have been disassembled and assembled without permission, our company will not repair them
Common failures
| serial number | Symptom | Workaround |
| 1 | The output light was found to be unstable during use | Replace the battery |
| 2 | The adapter port is not clean and stained | Gently scrub with alcohol |
| 3 | When the meter is just turned on, the output optical power fluctuates somewhat | Warm-up for 15 minutes before use |
quality assurance
We don’t approve of self-repair by users.
- The warranty period of the instrument is 18 months from the date of shipment. Our company will be all its products material and process commitment, warranty period of eighteen months from the date of shipment is valid. When the purchased product is found to have quality problems during this period, our company will make corresponding repairs or replacements. However, in any case, our company’s liability will not exceed the purchase price of the product.
- If there is a problem in the use of the instrument, according to the common fault prompt solution can not be solved, the user is not allowed to open the chassis without authorization, please contact our company’s marketing department or local agents.
- For quality failures caused by production defects, our company is responsible for free repair or replacement of products.
This guarantee applies only to normal use of the meter and is free from damage or improper use.
The warranty does not cover problems/failures caused by:
- Unauthorized repair or modification of the instrument
- Improper use, negligent use, accident, etc
All my products are accompanied by a warranty registration card from our company。Please fill in and send it back to our company together with a copy of the invoice, so that when we need to maintain, innovate, calibrate, etc. of your instrument in the future, we will have a root cause record.









