Dji Phantom 2 Vision + User Manual download pdf (Page 32)

Naza-M and IOC: Why and How

This is one (if not) the best description of Naza-M and IOC.

Source: http://www.pattayadays.com/2014/03/naza-mode-on-the-phantom-2-vision/

The Phantom 2 Vision is a fine machine. But the documentation can be sparse in places, and hard to track down.

Consequently there is a feature of the machine which you may never have heard about, but which gives you so many

more flying options; or you may have heard about it but can either not find out how to enable it, or are keeping away

because DJI tells you it is for advanced fliers only. Nonsense; it’s called the Naza-M and your flights will be more

pleasurable and safer if you have it enabled.

First I will tell you what it does; then if you like the sound of what it can do, I will tell you how to enable it.

By default your Phantom is set in Vision 2 mode. In this mode, the two shiny switches on top of the transmitter serve

no purpose (apart from the right hand one which you frantically toggle as if attempting to bring it to orgasm in order to

initiate the compass calibration mode). So when you fly, it doesn’t matter what position the switches are in.

In Naza-M, these 3 position switches offer a number of functions; with “normal” flight being achieved with both

switched in the up position. And this is why DJI says that this mode is not for beginners; because apparently beginners

are not capable of checking that the switches are up before flying. Assuming you have the intellect to ensure that the

switches are in the upright position before flying, then Naza-M may be for you.

So, switches up and start to fly, and the Phantom will fly exactly the same in Naza-M as it did in Vision/Phantom mode.

Now let’s play with the switches, starting with right hand side (S1). In the default top position you are flying in GPS

mode, meaning that the Phantom will attempt to maintain the same position in space when you take your hands off the

stick. Move the switch to the middle position and you are now flying in Attitude mode, or Atti for short (or A if you are

really trying to abbreviate to the maximum [or max, or M]). In this mode, your Phantom will attempt to maintain height

and direction by means of the barometer and compass; but GPS is switched off; so your craft will drift with the wind (if

there is no wind at all, you probably won’t notice any difference).

Why would you want to use this? Maybe you have been flying upwind. For an easy return, flip it into Attitude mode and

let it drift back to you. Wind direction permitting, it can also be useful for smooth video. Fly upwind, start your video,

and then turn on Attitude mode and let the video run as your Phantom is born along on the wind.

The bottom position of S1 initiates the Failsafe/Return to Home (RTH) procedure; whereby your Phantom climbs to 20

metres if it is lower than that, flies back to the starting point and then gently lands at your feet to the applause of

admiring onlookers. Normally, Failsafe triggers on when you have lost contact with your Phantom; but there are times

when you may want to initiate it even though you have a connection. The first is to impress those onlookers (I have

been guilty of that); and the second maybe when you have had enough flying and just want to let your Phantom come

home on its own. The problem is that in Phantom mode, the only way you can trigger Failsafe is to turn off the

transmitter. This is all well and good if your Phantom does then return to home and land; but if it decides to bugger off

instead, there is nothing you can do to reconnect; and you will left looking like a fool in front of an expectant crowd.

In Naza-M, the bottom position of S1 will initiate Failsafe/RTH, but you can regain control by flicking up the switch at

any time. Much better.

On the left we can find S2, home of the Intelligent Orientation Control (IOC) functions. In the up position (or in Vision 2

mode), IOC is off. And there you are, your Phantom a zillion metres high and a zillion metres away; and you want to

bring it home. To do that, you need to know where the front of the craft is pointed so you can bring it back towards you.

Unfortunately, given the shape of the thing, it can be impossible to know which is the front just by looking at it,

especially from a zillion metres away. So you have to squint at the display on the phone to work out orientation

(assuming you haven’t lost WiFi contact) and then mentally calculate which stick to throw to bring it back; by which

time the batteries have died and it has landed in a swamp.

Hello S2! Flick the switch to the bottom position and you are now in Home Lock mode. Then pull back on the right hand

stick and the Phantom will return to its starting point, irrespective of the direction in which it is pointed. I find this

massively useful. Whenever I have finished with a flight, I turn on Home Lock and just bring it home; so easy.

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Dji Phantom 2 Vision + User Manual Page 32

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