VIAVI Solutions
Data Sheet
VIAVI
SmartClass
OLA-55M
Optical Level Attenuator
Features
y Attenuation range . to  dB
y Absolute and relative attenuation
setting
y FTTx ready
y Automatic stabilization of the output
power even if the launched input
fluctuates (level controller mode)
y Direct setting of the output power
(level controller mode)
y Up and down arrow key to precise
and fast manual setting
y Remote controllable via USB
VIAVI SmartClass optical handhelds go
beyond the basics
With more than 100,000 optical handhelds already in use,
VIAVI continues the success story with the SmartClass
optical handhelds. The SmartClass helps your network
move to the next level of performance. SmartClass optical
handhelds encompass a new, intelligent, and next level
product line for testing all optical signals and systems,
including broadband, PONs, and Gigabit Ethernet.
All SmartClass optical handhelds provide:
y An extended number of calibration wavelengths for the
highest performance range in the industry.
y An intuitive graphical user interface for fast, easy, and
straightforward operation.
y An intelligent power supply management system.
y A belt bag for safe and hands-free operation and
transport.
y Traceable measurements to international standards for
confidence in accuracy.
y A robust, shock-proof, and splash-proof design for field
operation.
y Quick start operation, requiring no warm-up time and
reducing testing time.
The SmartClass OLA-55M (optical level attenuator) is the
latest design of the SmartClass product range. In this
unit more functions have been added to the well known
SmartClass OLA-55, which is a future-proof instrument for
system testing, installation, maintenance, and production
of singlemode fibers. Due to minimized differential group
delay (DGD), the SmartClass OLA-55M is also suitable for
40 Gbps systems.
Dust cap for the
optical interface
OCK-10 Optical Connector Cleaning Kit
(accessory)
Optical adapters (BN 2150)
for laser source output
Worldwide compatible AC adapter
(SNT-121A)
OVF-1 Visual Fault Locator
(accessory)
Accessories Special Application
Automatic level controller mode
Most applications require a defined power level rather than a certain
level of attenuation. A standard attenuator only allows the setting of an
attenuation value. Against it, the level controller mode of the SmartClass
OLA-55M allows direct setting of a precise and defined optical power level.
It integrates the function of an attenuator and a power meter and therefore
avoids extra steps to adjust the power level with a separate power meter.
Being in this mode the attenuator is automatically counterbalancing the
changes of varying input power level and provides a stable output level.
Shock-proof design
Display (128 x 64 dots)
shows up to three
results simultaneously
Level control mode
Backlight for the
display
Up arrow key
improves and down
arrow key decreases
precisely the
attenuation power
 VIAVI SmartClass™ OLA-M