speed automatically, zero delay time,
Transfer distance: RS-485/422 side: 1.2Km(9600bps)
RS-232 side: no less than 5m
Fiber optic:20,25,40,60,80,100,120km(SM),
2,5 km(MM) optional
Max number of drops:RS385/422: 128drops
Fiber connector: 2
×
SC, 2
×
ST, 2
×
FC optional
Wavelength:1310nm
Fiber optic cables: Single Mode:8.3/125,8.7/125,9/125 or 10/125 um
Muti-Mode:50/125,62.5/125 or 100/125 um
600W surge protection;1500W static protection
Power input: +9V~36VDC power supply input(2 bit terminal block)
Dimensions: 100.0mm
×
69mm
×
22.0mm
Operating temp: -25°C to70°C
Storage temperature: -40 to 85°C
Operating humidity: 5% to 95%(no condensation)
Warranty: 3 years
Approvals: FCC,CE,RoHS approvals
Applications:
Figure 1: Extending the RS232 data distance
Figure 2: Extending the RS485 data distance
Figure 3: Extending the RS422 data distance
Installation:
Model277 provides DIN-rail and wall mounting two types of
installation.
Wall mounting installation
DIN-Rail Installation
Troubleshooting instructions:
1. Electric port and optic port inconnection, insert the power
supply, PWR light, RXD light.
2. Use optic fiber short the optic port IN and OUT, RXD OFF.
3. If the up stream port is RS-232, connect the up stream port to
PC RS-232 port correctly, Using “Start” → “accessory”
→ “communication”, open the typical termianl, choice the
correct COM port and 9600bps speed
，
shorting the optic IN
and Out, input character in the typical termianl window, you
will see the data indicate, if you donot see the data indicate,
the products is failure.
Model277 FAQ:
LED indicator OFF
1.Power supply insert incorrect
2.Choice incorrect power supply( 9~36VDC)
LED indicator instruction
1.PWR ON: Product work normally
2.TXD indicator flash: optic port transfer data
3.RXD indicator flash: optic port receive data
4.RXDON: optic connection incorrect
（
electric port in connection,
used to optic port alarm indicator
）
Communication 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:
Shenzhen 3onedata Technology Co.,Ltd
Tel: +86-755-26702688 Fax: +86-755-26703485
www.3onedata.com
