XPro Transmitter
XPro Basic Setup
Start by turning the transmitter on. Just slide the Power switch on the side of the XPro and you should see the screen on with all the information of groups, modes, channel and battery charge.
Set the Channel
Setting the channel on the XPro is pretty simple. Just follow the next steps:

Press and hold the Zm/CH button until the channel number is highlighted on the screen.

Rotate the wheel until you see the channel number you’re going to use

Press the SET button.
As you can see in the image, I set mine to channel 9.
Set the ID
Follow the next steps to set the channel on the X3 transmitter:

Press the MENU button.

Rotate the wheel until you find the ID function.

Press the SET button and the number should be highlighted.

Rotate the wheel to set the value.

Press the SET button to confirm your selection.

Press the Return button to go back to the regular screen.
Please remember: the ID number should be the same you set in the flash. If you decided not to use ID or some flashes on your setup don’t have the ID function, set it to Off.
As you can see in the image, I set ID to 18.
Select and Configure Groups
The transmitter is ready to send orders to the flash groups. Now, we need to decide the orders we want to send and to which group.
Add and Remove Groups
The main screen should display the groups that are currently active. If you want to add or remove groups, follow the next steps:

Tap on the button with the three bars and a ± symbol. It should take you to a list of groups.

Tap on the groups you want to activate or deactivate. Active groups are bright with a white marker, inactive groups are grayed out.

Swipe right once to return to the main screen.
You should now see an updated list of groups to work with.
Select a Group

You can select a group by pressing the corresponding soft button on the left of the screen.
Set Group Mode

Now you can change the group mode, or turn it off by pressing the MODE button repeatedly.

The group will jump between the group being Off, in TTL mode or in Manual mode.
Set Group Power
Whether the group is in Manual or TTL mode, you can adjust its power setting by rotating the wheel on the transmitter.

If the selected group is in Manual mode, you should see the power changing between 1/1 (full power) and 1/128 (8 stops down). Every click of the wheel changes power by 0.3 stops.

If the selected group is in TTL mode, you should see the Flash Exposure Compensation (FEC) changing between -3 (under-exposed three stops) and +3 (over-exposed three stops). Every click of the wheel changes power by 0.3 stops.
I set group B to Manual mode and 1/16 power, as you can see in the image.
Set Group Zoom
Adjusting the flash zoom remotely requires you to use a Custom Function. Follow the next steps to set it, starting on the main screen:

Press the Zm/C.Fn button once, and you’ll see that the screen changes. It now displays the zoom value of each group.

Select the group, in our case group B.

Then rotate the wheel to adjust the zoom. You will probably hear the flash zooming in or out.

Press SET to confirm your selection.

Let’s press Zm/C.Fn again to go back to the regular screen.
As you can see in the last image, I set group B’s zoom to 35mm.
Testing
Let’s test! If you press the tester button, labeled with a lightning bolt on the XPro, the remote flash should fire.
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