Is it an analogue device?
NTSC or National Television Standards Committee is the abbreviation for the colour encoding system used in the USA, Japan, and various adjacent, connected or associated regions.
PAL is the abbreviation for Phase Alternation Line, the colour encoding system developed in Germany and used in the UK, and much of Europe and Australasia.
These colour encoding systems are required to produce colour in analogue TV systems.
However, there are other differences in the format of TV systems than just the encoding of the colour, and since the USA and regions use 60Hz mains supplies, and therefore a 60 field TV system of 525 lines per frame, whilst other countries using 50 Hz mains use a 50 field TV system with 625 lines, these abbreviations are sometimes used (incorrectly) to refer to 625/50 or 525/60 TV systems.
These colour encoding systems are not required on digital systems, as the 2 sets of colour signals, and the luminance information are sent sequentially as a string of digits at 270Mbits/sec.
Therefore, although you may be using a DVD or a digital camera, you may find it has a label NTSC indicating that it is switched to 525/60, or PAL a indication to show that it is switched to 625/50.
The NTSC signal suffers from shifting colours due to the RF signal reflecting off of buildings and other objects, which is why there was an impetus to develop a more robust system for TV in Europe. The USA amd Japan were too far advanced with their NTSC systems to consider adopting it, but some 60HZ mains supply countries in South America did adopt a variation of the PAL system.