[tech07]

Quote: Originally Posted by RLKing

Can anyone tell me the difference between a null cable or a straight data cable?????

Physically there is no difference between the 2 types of cables that are used on the various Receivers. They both have nine pins on each female end.

The only difference between the 2 types is that pins for the Null Modem Serial cable have pins 2 and 3 interchanged. That is to say that the wire connecting Pin #2 on one end connects to Pin #3 on the other end like this:


Null Modem Cable

1 ................ 1
2 ................ 3
3 ................ 2
4 ................ 4
etc.

The other type of Data transfer cable is wired straight thru, like this:

Straight Thru Cable

1 ................ 1
2 ................ 2
3 ................ 3
4 ................ 4
etc.


Null Modem cables are used on Viewsats, Sonicviews to name a few....whereas the Straight thru cables are used on the Coolsat 4000, 5000, 6000 just to name a few.

These cables cannot be interchanged when transferring Data.

I hope this answers your question on what the difference is between the 2 types of cables that are used for loading files to the various receivers.