Your Serial and Data Communications Expert
Shenzhen 3onedata Technology Co.,Ltd
converter fiber optic cables are connected properly,if Model277/B is
SM,using SM; If Model277/B is MM,using MM). Connect the
Model277/B RS-485 port or RS-422 port to a PC. Send ASCII
Characters from a hyper terminal program from one converter to the
other. This will test both the transmit and receive functions.
Model277/B
Model277/B
Model277/B
Model277/B
FAQ:
FAQ:
FAQ:
FAQ:
LED
LED
LED
LED
indicator
indicator
indicator
indicator
OFF
OFF
OFF
OFF
1.Power supply insert incorrect
2.Choice incorrect power supply ( 5VDC)
LED
LED
LED
LED
indicator
indicator
indicator
indicator
instruction
instruction
instruction
instruction
1.PWR ON:
Product work normally
2.TXD indicator flash: optic port transfer data
3.RXD indicator flash: optic port receive data
4.RXD ON: optic connection incorrect
（
electric port in
connection, used to optic port alarm indicator
）
Communication
Communication
Communication
Communication
failure
failure
failure
failure
1.Using incorrect power supply
2.Optic port or electric port connection incorrect.
3.Optic fiber port do not inosculate to the equipment interface
4.The equipment come from different supplier
5.Single-mode optic fiber uses multi-mode equipment or multi-
mode optic fiber uses single-mode equipment
6.The optic fiber connector is incorrect, high error code,
attenuation large.
Certifications:
Certifications:
Certifications:
Certifications:
Shenzhen
Shenzhen
Shenzhen
Shenzhen
3onedata
3onedata
3onedata
3onedata
Technology
Technology
Technology
Technology
Co.,Ltd
Co.,Ltd
Co.,Ltd
Co.,Ltd
Tel: +86-755-26702688
Fax: +86-755-26703485
www.3onedata.com
