AQ7277B Remote OTDR Optical Time Domain Reflectometer

High performance OTDR module for RFTS (Remote Fiber Test System)
The AQ7277B is OTDR modules for RFTS (Remote Fiber Test System) including features required for monitoring fibers.

What is an Optical Time Domain Reflectometry OTDR Used For?

Optical time domain reflectometry is used to test optical fibers and their function.

How Does An Optical Time Domain Reflectometer Work?

Optical Time Domain Reflectometers (OTDRs) function to characterize optical fibers by sending series of optical pulses into fibers, extracting light that scatters or reflects at points in the fibers, then measuring and integrating and plotting the return pulses and their strength.

Remote Use of OTDR

Yokogawa offers remote controllers for remote use of OTDR via computer.

High performance OTDR module for RFTS (Remote Fiber Test System)

The AQ7277B is OTDR modules for RFTS (Remote Fiber Test System) including features required for monitoring fibers.

-High-speed data transfer

The Ethernet (10BASE-T/100BASE-TX) interface achieves high-speed data transfer.

-Maintenance wavelength which has no influence to live communications

OTDR with the maintenance wavelength (1650 nm) enables the monitoring of live communications line.
A built-in cut filter reduces an impact of communications signals on the measurement.

-Available for test through high-port-count splitters

Supports the measurement of the PON system including high-port-count splitters.

AQ7277B

-Small-sized module

The volume is reduced by 60% compared to the existing model (AQ7277).
The mountability in the RFTS is improved.

-Wavelength lineup

In addition to the model of the maintenance wavelength (1650 nm), there is a model of 1550 nm (DR 50 dB) which supports long distance measurement.

Model AQ7277B-B01 AQ7277B-B02
Wavelength 1650±5 nm 1550±25 nm
Distance range
0.2, 0.5, 1, 2, 5,
10, 20, 30, 50,
100, 200, 300,
400, 512 km
Pulse width
3, 10, 20, 30, 50,
100, 200, 300, 500,
1000, 2000, 5000,
10000, 20000 ns
Sampling resolution Min. 2 cm
Dynamic range 40 dB (typ.) 50 dB (typ.)
Event dead zone 0.6 m (typ.) 0.6 m (typ.)
Attenuation dead zone 4 m (typ.) 4 m (typ.)
Distance measurement
accuracy
±0.75 m ± measurement
distance x 2 x 10-5 ± 1
sampling resolution
Number of sampling data Max. 256,000 points
Remote control interface
LAN
(10BASE-T/100BASE-TX),
 USB2.0 (Type B mini)
Alarm Output
Status query,
LED drive signal
Environmental Conditions Operating temperature -10 to 50 °C
Storage temperature -20 to 60 °C
Humidity
0 to 90% RH
(no condensation)
Power requirements 12 VDC 2.5 A or less
Dimensions and Weight
230 mm (W) × 50 mm (H)
× 140 mm (D), Approx. 1 kg
Laser safety standards Class 1 (IEC 60825-1)

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