Why does an active scanner have a passive component?

[martinuzz (OP)]

I am designing an active scanner..
The tutorial says that it has 5 options, but it has 6.

2 second option in the row is EM Sensor Sensitivity.
Was that added recently?

[DatAlien]

Why do you need a passive component?
If you have a flashlight alone, you cant see anything, you need eyes too (or a similar organ)

What it do?
With a greater sensitivity you can see the reflection of the ping from the active component on more distant objects.

[UnLimiTeD]

It was added a while ago, but the tutorial is not the newest.
It's basically what Alien said, the eyes for your light.

EM Sensor Level*10% if the range modifier you get on that, though I'm not actually sure on 5.2 about that.
Basically, it increases your actives effective range.

[Andrew]

It was added a while ago, but the tutorial is not the newest.
It's basically what Alien said, the eyes for your light.

EM Sensor Level*10% if the range modifier you get on that, though I'm not actually sure on 5.2 about that.
Basically, it increases your actives effective range.

The effect is the same but doe to the formula change for sensors I think the divide by 10 moved elsewhere in the formula but the ratio is the same (EM Sensitivity 6 has 25% less range than EM Sensitivity