There are two versions of our popular DiamondBack fiber optic video multiplexer. The DiamondBack II multiplexes eight (8) broadcast quality NTSC/PAL/SECAM video channels onto one fiber/wavelength in one direction. The bi-directional DiamondBack 4x4 (shown) simultaneously multiplexes four channels of analog video in each direction.
Both systems also include an audio/data AUX port that can accommodate up to 32 audio channels, plus intercom and data (from an Adder coax port). The DB 4x4 also includes data channels, a 10/100 Ethernet channel, and a separate talkbalk channel. Dual fiber ouputs are available for optical redundancy and/or split feeds. Features include: front panel monitoring of any video channel, loop-thru video inputs and dual video outputs.

Find the Diamond Back 8 channel data sheet here and the DB 4x4 data sheet here

Introducing the new Adder II family, featuring a rack-in-a-rack scaleable design, the answer to all of your audio transport needs.
With up to 64 channels of bi-directional audio, four intercom module slots (providing up to eight intercom circuits), expanded data and GPI capabilities, outstanding signal-to-noise, mic gain and phantom power control, and industry leading latency specs, today's Adder II is an audio workhorse.