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DLS350 User Guide
To output a 2kHz tone simply turn the device on, select your desired wavelength, then press the “2kHz” button. The
wavelength indicator will begin blinking to confirm to the user that 2kHz tone is being output. Plugging in a power meter
like the RP450 will display an onscreen notification and output a loud beep to alert the user at the other end that a tone
has been detected. To disable the tone simply press the 2kHz button again.
Using 2kHz
Maintenance
The DLS350 utilizes a physical fiber connection at the output port. This ensures a steady power level for performing
insertion loss tests.
Be aware that any test jumpers must be inspected and cleaned before plugging into the DLS350 unit. If soiled or damaged
connectors are inserted, they can cause damage to the DLS350 output port and the unit may need to be repaired.
The test jumper has
physical contact with the
ferrule inside the DLS350.
To clean the ferrule
inside the DLS350:
• Unplug the test jumper
• Unscrew the adapter until it spins
freely, then pull
• Inspect the ferrule with an
approved microscope, clean if
necessary, and replace adapter
Caring for the DLS350 Output Port
Singlemode fibers usually have either blue (UPC) or green (APC) connectors. The DLS350 LED source is made for
multimode testing, so neither blue nor green connectors are appropriate. Generally, multimode fiber will have
beige connectors.
DO NOT plug an APC connector into the DLS350 unit. This can cause irreparable damage to
both connectors.
