DC	DC Operation: Requires the unit to be powered from a DC source exclusively, typically +12 to +35 VDC.
GPS	GPS Receiver: A GPS receiver replaces the IRIG-B Time Code Input.
IRIG	IRIG-B Time Code Output. Option 'GPS' is required.
SV	The BNC video connectors are replaced with S-VHS connectors.
Text-USB	Provides the ability to add up to three lines (30 characters per line) of text to each channel of video. USB interface.
UL	"UL" Approved Power Supply: The unit is supplied with a UL/CSA approved wall mount power supply.