Multichannel Insertion Loss and Return Loss Testing

Advancing the World of Fiber Optics™

OptoTest_OP940-SW — Click image to enlarge

The OP940-SW is a multichannel insertion loss (IL) and return loss (RL) meter designed for testing ribbon cables and multi-pin termini. It features a color LCD screen, an optical reflectance scan mode, programmable pass/fail for editable test criteria and on screen context help. Additionally, the OP940 can measure return loss (RL) at two positions simultaneously through the front panel and it offers expandable functionality. As with our other IL/RL systems, the OP940 measures RL quickly and accurately without the need for mandrel wrapping or the use of index matching gel, and is available in Single Mode, Multimode, and FTTX variants.

By incorporating a high-quality MEMS optical switch, the OP940-SW is able to quickly and accurately test multichannel cables. It can be built with 4 and up to 24 channels and all source connectors are easily accessible to minimize downtime on high volume production lines in case of optical endface damage.

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Product Features

Measures Multifiber and Ribbon Cables in Seconds
Produces All-In-One Cable Datasheet
Front Panel Optical Reflectance Trace for each Channel
Set Return Loss Reference Position and Value
Measures Return Loss at Multiple Connection Points through the Front Panel
Programmable Pass/Fail
Expandable Functionality
On Screen Help
Configurable Timer Settings, such as Dwell Times
User Accessible Source Connectors
Easy to Use
Single Mode, Multimode, FTTX

Product Specs

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.

Optical Power Meter	1mm InGaAs	3mm InGaAS	5mm InGaAs	10mm InGaAs	3mm Silicon
Measurement Range	+6dBm to -72dBm at 1490nm	+3dBm to -72dBm at 1490nm	0dBm to -65dBm at 1490nm	0dBm to -55dBm at 1490nm	0dBm to -65dBm at 980nm
Wavelength Range	850nm to 1650nm				400nm to 1100nm
Selectable Wavelength	Standard wavelengths (850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm)				Standard wavelengths (650nm, 850nm, 980nm)
Measurement Resolution (Display)	0.001dB
Absolute Accuracy	±0.25 dB at calibration conditions for all NIST traceable wavelengths
Measurement Linearity (Relative Accuracy)
Deviation ± 0.05dB	+3dBm to -65m at 1490nm	0dBm to -65dBm at 1490nm	0dBm to -55dBm at 1490nm	0dBm to -45dBm at 1490nm	0dBm to -55dBm at 980nm
Deviation ± 0.01dB	<10dB power variation	<10dB power variation	<10dB power variation	<10dB power variation	<10dB power variation

Source	1310nm/1550nm LASER	1310nm/1490nm/1550nm/1625nm LASER	850nm/1300nm LED
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
Source Stability*	±0.02dB	±0.02dB	±0.02dB

* Over 1 hour with a max. change of 1ºC.

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	Half-Rack Units	Full-Rack Units	OP710s/OP740s	OP940-SWs
Dimensions	8 ⅜” x 3.5” x 12”	16 ¾” x 3.5” x 12”	16 ¾” x 3.5” x 8”	16 ¾” x 3.5” x 1
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.

Specifications are subject to change, please confirm specific performance characteristics of the product at the time of ordering. All specifications are valid within temperature range of 18ºC to 24ºC unless otherwise noted. For additional specifications please contact OptoTest.