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M-UM007-03
TO CLEAN THE FERRULE INSIDE THE DLS 355:
• 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
Using the 2 kHz Function
When the DLS 355's 2 kHz modulation is active, the selected wavelength indicator will
blink. The modulation is recognized by optical power meters further down the fiber and
indicated by a 2 kHz notification on the screen and a loud beep. The modulated tone can
also be recognized through the fiber jacket when a Live Fiber Identifier is used.
The LFI introduces a bend into the fiber which
leaks light from the core onto the detector of
the power meter. When using an LFI, expect a
30 to 35 dB offset in core power.
Testing Notes
Blue connectors (UPC) have a straight ferrule with a domed interface. Green connectors
(APC) have an eight-degree angled ferrule with a domed interface.
UPC and APC connectors
are not compatible
.
NEVER
connect UPC and APC connectors
together, OR plug an APC connector into the DLS 355 unit. This can cause irreparable
damage to both connectors.
Maintenance
Unpacking & Inspection
The DLS 355 is supplied with a soft carry case, SC adapter installed on the unit, 3.0V CR2
battery, and an instruction card. Contact Ripley immediately if any part of the unit or
packaging is damaged, or otherwise unsatisfactory.
Low Battery
The DLS 355 provides over 1000 operations under normal conditions. When the LOW BAT
LED indicator is illuminated on the device, the CR2 battery should be replaced or recharged,
depending on the battery type.
