The OptoTest OP725 is an optical switch for single mode or multimode applications available in a slim-line, half-rack enclosure. This optical switch is USB powered and incorporates the latest technology in high-speed switching. With high repeatability and low loss, the OP725 is ideally suited for bidirectional testing.
Paired with our OP940 Insertion & Return Loss Meter, operators can make quick work of measuring both ends of cables in a truly bidirectional manner.
The OP725 can be connected to the OP940 via USB to allow control of bidirectional switching via the OP940’s front panel controls or in OPL-PRO software.
It can also be used in more complex, multi-instrument configurations with other OptoTest instruments (for example, an OP710) and OPL-MAX / OPL-LOG software.
Features:
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Fully automated, concurrent dual wavelength IL and RL measurements with no mandrel wrapping
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Bidirectional operation; measuring total insertion loss and individual return loss
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External power meter for uni-directional operation
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On-board, InGaAs optical power meter features measurement range reaching -65dBm
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Available in multimode and single mode
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Quad-wavelength (FTTX) single mode model also available upon request
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Controlled launch condition (underfill, fully filled, overfill) available for multimode fiber
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Wide dynamic range on return loss measurements:
10dB to 80dB for single mode
10dB to 58dB for multimode -
Can be controlled remotely via USB using OPL series software or OptoTest DLLs
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Integrated temperature monitoring
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Convenient benchtop size (19-inch rackmount frame available upon request)
Single Mode | FTTX | Multimode | |
Source Wavelength | 1310nm, 1550nm | 1310nm, 1550nm, 1490nm, 1625nm | 850nm, 1300nm |
Calibrated Return Loss Measurement Range |
-10dB to -80dB | -10dB to -80dB | -10dB to -58dB |
Return Loss Linearity | ±1dB (-12dB to -72dB) | ±1dB (-12dB to -72dB) | ±1dB (-10dB to -45dB) |
Distance Range | 100 meters (standard)/ 2500 meters (Rep Rate adjusted) |
100 meters (standard)/ 2500 meters (Rep Rate adjusted) |
100 meters (standard)/ 2500 meters (Rep Rate adjusted) |
OPM Linearity | ±0.05dB (+3dBm to -65dBm at 1490nm) |




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