Computing
Extending Ethernet Long Distances using Fiber Optic Media Converters
Research Links
- MC111CS – The data sheets are available under the download tab. Purchased.
- MC112CS – Purchased
- Ebay: 120 Ft Test cable Purchased: with correct connectors – in reality I need 250 Meters but this is cheaper to make sure all else is working before I buy the much more expensive fiber optic cable.
- Ebay: 250 Meter SC SC Fiber Optic Cable – will need to take at least one spare. See the table at the bottom.
- Ebay: 300 Meter SC SC Fiber Optic Cable – Outdoor – appears outdoor means a black heavy jacket has been added to same type of cable as entry immediately before this one.
- FiberCables.com
- eCableMart FC to SC optical connector adapter
The MC111CS and MC112CS are complimentary in that the Tx wavelength is the Rx wavelength of the other. See excerpt below.
The MC112CS is a media converter designed to convert 100BASE-FX fiber to 100Base-TX copper media or vice versa. Adopting WDM technology, MC112CS takes only one fiber cable to transmit and receive data, which will save half cabling cost for you. Designed under IEEE 802.3u 10/100Base-TX and 100Base-FX standards, the MC112CS is designed for use with single-mode fiber cable utilizing the SC-Type connector. The MC112CS supports longwave (LX) laser specification at a full wire speed forwarding rate. It works at 1310nm on transferring data and at 1550nm on receiving data. So the other end device to cooperate with the MC112CS should work at 1550nm on transferring data and at 1310nm on receiving data. Another TP-LINK?s media converter MC111CS is just one of the examples to cooperate with MC112CS.
What are Media Converters
MC111CS & MC112CS Fiber optic media converter link
- I tested this setup with a 120 foot long patch cord. It worked.
The parts inside the box
Fiber Optics
Fiber Optic Power Budget Estimation
Research Links
| Fiber Type | Wavelength | Fiber Attenuation /km (1) | Fiber Attenuation per km (2) | Connector Loss | Splice Loss |
| Multimode 50/125um | 850nm | 3.5 dB | 2.5 dB | 0.75 dB | 0.1 dB |
| 1300nm | 1.5 dB | 0.8 dB | 0.75 dB | 0.1 dB | |
| Multimode 62.5/125um | 850nm | 3.5 dB | 3.0 dB | 0.75 dB | 0.1 dB |
| 1300nm | 1.5 dB | 0.7 dB | 0.75 dB | 0.1 dB | |
| Single Mode 9um | 1310nm | 0.4 dB | 0.35 dB | 0.75 dB | 0.1 dB |
| Single Mode 9m | 1550nm | 0.3 dB | 0.22 dB | 0.75 dB | 0.1 dB |
Note: (Fiber Attenuation /km in above table)
1. These values are per TIA/EIA and other industry specifications
2. These values are one example of the performance that can be obtained with a new fiber installation
Computing
EteRNA – Online RNA design game that also does real design
I read claims of this producing consistently better designs than those done by computers. I guess that is not saying much but it is interesting enough to warrant playing and see what the game does.
Research links
Computing
Light Weight Travel Monitor: LG E2442TC 24″ Class Slim LED Backlit Monitor – 1920 x 1080
Note that this monitor only weights 6lbs without the stand. Available at Frys electronics
Specifications
Display
3D Ready No
Screen Size 24"
Screen Coating Anti-Glare
3H
LED Backlight Yes
Widescreen Yes
Aspect Ratio 16:9
Viewing Angles 170 horizontal / 160 vertical viewing angles
Maximum Resolution 1920 x 1080
Response Time 5ms
Brightness 200 cd/m2
Dynamic Contrast Ratio 5,000,000:1
Features
Touch Screen No
HDCP Support No
TV Tuner No
Built-in Speakers No
Built-in Webcam No
Stand Adjustment Tilt
Connectivity
VGA 15-pin 1
DVI 1
Power
Voltage Required AC 100/240V
Power Consumption Operational (Standby) 23 Watts (0.3 Watts)
Physical Specifications
Dimensions (WxDxH) 22.3" x 7.1" x 16.5" (With Stand); 22.3" x 2.2" x 13.5" (Without Stand)
Weight 6.5 lbs. (With Stand); 6 lbs. (Without Stand)
Wall Mount 100mm x 100mm
Package Contents
What's in the Box Monitor, Power Cord, VGA Cable
Manufacturer Warranty
Warranty 1 Year Limited Warranty
Computing
How to turn off automatic update restart nag
To stop this service, open [Command Prompt] (Start>Run>cmd>Enter) and type the following command
sc stop wuauserv
This will not prevent Automatic Updates from starting at the next boot. So don't worry, you'll keep getting Windows updates. Just don't forget to restart eventually.
This worked with Windows XP.