CECB stands for Coupon-Eligible Converter Box. This means that a box that is CECB certified is eligible for U.S. government coupon which is worth $40. Households can apply to get such coupons via U.S. DTV web page and then use the coupon to get CECB certified DTV converter for free.

EPG stand for Electronic Program Guide and is an on-screen guide to scheduled broadcast television or radio programs. EPG allows the viewer to browse upcoming programming with the remote control.

If the DTV converter has a built-in recorder it can be used to record broadcasts.

NTSC tuner is an analog tuner which can pickup over-the-air (OTA) broadcast signals. The tuner will become obsolete on Feb. 17, 2009, as the USA switches to digital only OTA broadcasts.

Analog cable tuner is required to receive the analog cable broadcasts. Cable companies are not obliged to switch over to digital transmissions on Feb 17, 2009, and thus the analog tuner can still be of use in some regions.

A smart antenna system combines multiple standard antenna elements with a signal-processing capability to optimize the reception pattern automatically in response to the signal environment. In other words, smart antenna saves the trouble of manually adjusting the antenna for optimal reception.

Support for closed captions means that the digital-to-analog converter box can convert over-the-air digital closed captioning for display on analog TV sets. According to the FCC rules all DTA converters are obliged to support this feature.