What does TTL Blanking mean?

[tomc]

Could someone please explain to me what TTL Blanking means? I am a beginner so thats obviously why i dont know. ops:

[JimBo]

TTL is logic and only has 2 states, 0 Volts or 5 Volts (off or on).
Analogue blanking can be any voltage between 0 and 5 Volts, so therefore the laser can be at any brightness from totally off to fully on.

If you have a RGB laser and all three are analogue then you have the ability to display pretty much any shade of any colour.
If you have TTL lasers you are limited to 7 colours.

Jim

[mazfg]

TTL actually stands for Transistor to Transistor Logic. Which is to do with digital circuits of old that used Transistors as there make up. The logic levels worked on 1=+5v and 0=0v. It is still used today as we can see to descibe the blanking signal required for some lasers[/b]

[tomc]

So basically if the Laser is capable of TTL Blanking, when it is connected to a certain circuit board the software can turn it on and off when needed to display different RGB colours. Is that right? :?:

[JimBo]

Thats about it , but with ttl you only have a limited number of colour whereas with analogue you have virtually limitles colours and shades.

Jim

[mazfg]

With TTL and RGB, your just going to get the basic 6 colours, WHITE and OFF
1. RED
2. BLUE
3. GREEN
4. CYAN or TURQUOISE (BLUE+GREEN)
5. YELLOW (RED+GREEN)
6. MAGENTA or PURPLE (RED+BLUE)
7. WHITE (ALL ON)
8. BLACK (ALL OFF)

With Analogue modulation, in theory you should be able to get 16.7 million colours, which is the usual Windows colour pallette

[jeejeedr]

With TTL and RGB, your just going to get the basic 6 colours and OFF
1. RED
2. BLUE
3. GREEN
4. CYAN or TURQUOISE (BLUE+GREEN)
5. YELLOW (RED+GREEN)
6. MAGENTA or PURPLE (RED+BLUE)
7. BLACK or OFF[/list]

With Analogue modulation, in theory you should be able to get 16.7 million colours, which is the usual Windows colour pallette

And white (all on) 8)

[mazfg]

Cheers jeejeedr, I knew I was missing something!!!!!!!!!!!!!!! :lol: