Kramer 690T 2x3G SDI Transmitter over Ultra-Reach SM Fiber

The Kramer 690T is the transmit end of a two-channel 3G SDI link over single-mode fiber, taking two 3G HD-SDI signals on BNC and putting them onto two optical LC outputs.

The Ultra-Reach single-mode optics carry the link more than 6.2 miles (10 km), far past what coax can do and past the point where copper's ground and interference problems start to matter. It pairs with the 690R receiver at the far end.