SmartClass OLA-54 Multimode Optical Level Attenuator
Handheld variable attenuator for 50/125 µm multimode fiber, adjustable from 750 to 1350 nm with absolute and relative attenuation setting.
- Linearity
- ± 0.2
- Repeatability of attenuation setting
- ± 0.1 dB
- Setting type
- Continuous over the entire range
- Displayed value
- Absolute or relative attenuation value
Overview
The VIAVI SmartClass OLA-54, OLA-55 and OLA-55M are handheld variable optical level attenuators for fiber system testing and for the installation, maintenance and production of fiber links. The OLA-54 is designed for 50/125 µm multimode fiber systems, while the OLA-55 and OLA-55M are designed for single-mode fibers. All three share the SmartClass handheld platform with a shock-proof and splash-proof housing, an illuminated 128 × 64 dot graphical display that shows up to three results simultaneously, a USB port for remote operation, and quick-start operation without warm-up time.
The attenuators set attenuation continuously over the entire range, displayed as an absolute or relative value. An optical design with low minimum insertion loss and low differential group delay makes the instruments suitable for systems up to 40 Gbps. Measurements are traceable to NIST/PTB standards, and an extended number of calibration wavelengths is available (600 adjustable wavelengths on the OLA-54, 400 on the OLA-55 and OLA-55M). Interchangeable optical adapters from the BN 2155/00.xx range allow measurements on flat or angled physical contact connectors.
Level controller mode (OLA-55M)
The OLA-55M adds a motorized drive and an integrated power meter. In its level controller mode the instrument sets a defined optical output power directly instead of an attenuation value, and automatically counterbalances fluctuations of the input power to keep the output level stable. The OLA-54 and OLA-55 can also be supplied as part of SmartClass optical test kits that combine a power meter, a light source and an attenuator with accessories.
Key Features
- Robust, shock-proof, and splash-proof design for field operation
- USB port for remote operation
- Absolute and relative attenuation setting
- Continuous attenuation setting over the entire range
- 40 Gbps ready due to low Differential Group Delay
- Traceable measurements to NIST/PTB standards
- Quick start operation requiring no warm-up time
- Low minimum insertion loss due to a special optical design
- FTTx ready
- Illuminated 128 × 64 dot graphical display showing up to three results simultaneously
- Interchangeable optical connector adapters from the BN 2155/00.xx range for PC and APC systems
- Automatic power-off after about 20 min (can be disabled)
- Four ways of powering: dry batteries, NiMH cells, AC adapter or external 12 V DC
- 600 adjustable wavelengths
- 50/125 µm multimode fiber design
- Wheel for precise and fast manual setting
- Long battery operation time of >1000 h
Specifications
| Linearity | ± 0.2 |
|---|---|
| Repeatability of attenuation setting |
± 0.1 dB
Excluding remating
|
| Setting type | Continuous over the entire range |
| Displayed value |
Absolute or relative attenuation value
Including connectors (to IEC874-1, method 6), depending on quality of the connectors applied to the OLA
|
| Table adjustable wavelength range | 750 to 1350 nm in 1 nm increments |
| Fiber type | 50/125 µm |
| Calibrated wavelengths | 850 nm, 1300 nm |
| Display range |
<2.5 to 55 dB
Including connectors (to IEC874-1, method 6), depending on quality of the connectors applied to the OLA. The OMK-55 kit datasheet lists 2.5 to 60 dB
|
| Minimum insertion loss |
<2.5 dB
Including connectors (to IEC874-1, method 6), depending on quality of the connectors applied to the OLA
|
| Total attenuation accuracy |
typ. ± 0.8 dB
Including connectors (to IEC874-1, method 6), depending on quality of the connectors applied to the OLA
|
| Function | Bi-directional |
| Max. permitted level | +20 dBm |
| Display | Illuminated graphical display, resolution of 128 × 64 dots |
|---|---|
| Results displayed in | dB |
| Backlight | Backlight function switchable via a separate key |
| Connector | Optical connector interchangeable adapter from BN 2155/00.xx range is suitable for measurements on flat or angled physical contact systems |
| Electromagnetic compatibility | Corresponds to IEC 61326 (CE conformance) |
| Suggested calibration interval | 3 years |
| Batteries | Four dry batteries Mignon/AA, 1.5 V or NiMH rechargeable cells Mignon/AA, 1.2 V |
|---|---|
| Operating time from dry batteries |
>300 h
Web page states a battery operation time of >1000 h for the OLA-54/-55; the datasheet value is given here
|
| Power saving | The instrument switches off automatically after ~20 min (function can be disabled) |
| AC line operation | Via separate AC adapter |
| Battery charging | Integrated fast battery charging function (2 hours) |
| External DC operation | External 12 V DC operating via an AC adapter or a 12 V car battery adapter |
| Ambient temperature, nominal range of use | −10°C to +55°C |
|---|---|
| Ambient temperature, storage and transport | −40°C to +70°C |
| Dimensions (W × H × D) |
95 × 60 × 195 mm (3.74 × 2.36 × 7.68 in)
Approximately
|
|---|---|
| Weight |
500 g (1.1 lb)
Approximately
|
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Emulating fiber loss for testing system dynamics
- Fiber system testing, installation and maintenance
- Broadband, PON and Gigabit Ethernet network testing
- System installation and maintenance of multimode fiber
Included
- 2 interchangeable adapters from BN 2155/00.xx range (must be selected)
- 4 dry batteries Mignon/AA, 1.5 V
- Operating manual
- MT-1S belt bag
Options & Accessories
| Option | Description |
|---|---|
| BN 2155/00.32 | Optical adapter ST type |
| BN 2155/00.06 | Optical adapter SC/PC type |
| BN 2155/00.05 | Optical adapter FC type |
| BN 2155/00.26 | Optical adapter SC/APC type |
| BN 2155/00.07 | Optical adapter LC type |
| BN 2252/01 | OVF-1 Visual Fault Locator |
| BN 2229/90.21 | OCK-10 Optical Connector Cleaning Kit |
| BN 2229/90.07 | Optical cleaning tape |
| BN 2229/90.08 | Spare tape for optical cleaning tape |
| BN 2237/90.02 | NiMH cells, Mignon/AA, 1.2 V — 4 required per instrument |
| BN 2277/90.01 | SNT-121A Worldwide compatible AC adapter |
| K804 | USB connection cable |
| BN 2277/90.02 | MT-1S belt bag for one instrument |
| BN 2126/03 | MT-2S soft bag for two instruments |
| BN 2126/04 | MT-3S soft bag for three instruments |
| BN 2093/31 | MK-3S hard case for three instruments |
| BN 2280/90.01 | Calibration Report |
| BN 2280/41 | SmartClass OLA-54 Multimode, variable attenuator, 50/125 μm |