OP940-SW Multichannel Insertion Loss & Return Loss Meter
Accurately test your multiple simplex, or multi-channel cable assemblies faster, easier and more efficiently with the OP940 Switched Optical Return Loss and Insertion Loss Meter.
The multichannel OP940 is an internally switched Insertion Loss (IL) and Return Loss (RL) meter designed for testing ribbon cables and multi-pin termini. Used worldwide by some of the largest companies, this system offers the fastest and most accurate multichannel IL and RL testing experience in the industry.
* OptoTest offers a variety of calibration services click here to learn more.
FAST
ACCURATE
RELIABLE
Multichannel OP940
FEATURES & BENEFITS
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Simplified Test Setup
The OP940 measures quickly and accurately without the need for mandrel wrapping or the use of index matching gel.
Fastest IL/RL Measurement
A single channel, dual wavelength, IL and RL test with the multichannel OP940 takes less than 4 seconds.
Most Accurate RL Measurement
By making use of a wide dynamic range (-10dB to -80dB) for RL measurements, the multichannel OP940 is able to adjust for attenuation in the reference setup, which results in the most accurate Return Loss results in the industry.
Easy Maintenance For Minimal Downtime
To minimize downtime on high volume production lines due to optical end-face damage, the removable front panel gives you access to the source connector, allowing you to re-polish the connector if it gets damaged.
Customizable
The multichannel OP940 can be built in numerous channel counts from 4 to 24. The system is available with Single Mode, Multimode, and FTTX wavelengths and a variety of core sizes and detector options.
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MADE IN THE USA
We proudly design & manufacture our equipment in California, United States.
- Test Multifiber & Ribbon Cables in Seconds
- Front Panel Optical Reflectance Trace for each Channel
- Set Return Loss Reference Position and Value
- Measure Return Loss at Multiple Connection Points through the Front Panel
- Produce All-In-One Cable Datasheet through Software
- Programmable Pass/Fail
- Available in Single Mode, Multimode, FTTX
- On Screen Help
- Easy to Use
APPLICATIONS
MANUFACTURING TESTING
R&D TESTING
SOFTWARE
Automate, customize, and record your tests through software.
CALIBRATION
Can be calibrated on-site, in-house or remotely.
3-YEAR WARRANTY
OptoTest offers a three-year full warranty!

DOWNLOADS
TECH SUPPORT
Our team of experts is ready to assist you.

30-DAY GUARANTEE
Our 30-Day Guarantee allows a full refund for any reason.
Talk to one of our sales engineers at +1(805) 987-1700 to learn more about our custom solutions.
PRODUCT RESOURCES
Return Loss | Single Mode | FTTX | Multimode | ||
Source Wavelength | 1310nm, 1550nm | 1310nm, 1550nm, 1490nm, 1625nm | 850nm, 1300nm | ||
Calibrated Measurement Range | -10dB to -80dB | -10dB to -80dB | -10dB to -58dB | ||
Measurement Linearity | ±1dB (-12dB to -72dB) | ±1dB (-12dB to -72dB) | ±1dB (-10dB to -45dB) | ||
Distance Range | up to 2500 meters | ||||
Mandrel-free minimum distance | 1.7 meters (both reflections <-45dB) | ||||
Insertion Loss | Single Mode | FTTX | Multimode | ||
Source Center Wavelength | ±30nm from nominal | ±30nm from nominal | ±30nm from nominal | ||
Source Bandwidth | <10nm | <10nm | <140nm (850nm) <200nm (1300nm) | ||
Internal Fiber | 9/125μm (SMF28) | 9/125μm (SMF28) | 50/125μm, 62.5/125μm, 105/125μm | ||
Launch Condition | N/A | N/A | Available upon request | ||
Output Power* (typical) | -1.5dBm | -2.5dBm | -18dBm(850nm) -20dBm(1300nm): 62.5/125μm | ||
Insertion Loss Stability** | ±0.02dB | ±0.02dB | ±0.02dB | ||
Measurement Linearity (Relative Accuracy)*** | |||||
Deviation ± 0.05dB | 0dBm to -65dBm at 1490nm | ||||
Deviation ± 0.01dB | <10dB power variation |
*For single channel systems. **Over 1 hour with a max. change of 1ºC. ***For 1, 2, and 3mm detectors.
Measurement Timing | Single Mode | FTTX | Multimode |
IL and RL, Dual Wavelength | 3s* | 6s | 3s* |
Switching Time (Multichannel) | 100ms |
* Using the front panel in Dual ILRL mode or running OPL-Pro with real-time update enabled.
Mainframe | OP940-SWs | |||
Dimensions | 16 ¾” x 3.5” x 14″ | |||
Power Supply | 90VAC … 264VAC; 47Hz to 63Hz; 0.7Amps (115VAC) 0.4Amps (230VAC); Fuse: T1A, 250V | |||
Warm-up time | 5-15 minutes | |||
Operating Temperature | 5℃ to 40℃ | |||
Maximum Relative humidity* | 80% |
* For temperatures up to 31°C, decreasing linearly to 50% relative humidity at 40°C.
Government Contractor?
COMMON TESTING CONFIGURATIONS
12 Channel MTP IL/RL

12 Channel LC-MTP Bidi IL

24 Channel MTP IL/RL
