---
title: "Pair Pulsars with a Beacon"
canonical: "https://help.vicon.com/space/Evoke18/397967930/Pair%20Pulsars%20with%20a%20Beacon"
format: markdown
---
After you have turned on a Beacon and made sure it is available for pairing, you can pair Pulsars to it.

1. On a Pulsar, press the power button to turn it on.  
The Pulsar automatically searches radio channels to find the Beacon it is paired with, or if unpaired, a Beacon that has pairing enabled (see [Turn on Beacon and enable pairing](https://vicon-help.atlassian.net/wiki/spaces/Evoke18/pages/397967823)).  
In Evoke, in the **System** panel, in the **Clusters** section, a Pulsar is displayed.
2. Ensure that the Pulsar connection status is cyan (connected but not assigned a marker pattern).
  If the Pulsar's battery level is low, a status icon indicates this.   
If any other icon is displayed, see [Pulsar status icons in Evoke](#ClusterErrorIcons) to troubleshoot possible issues
3. When all the Pulsars have been paired, turn off pairing mode. To do this, either click the **Stop Pairing** button or close the **Radio Pairing** dialog box.

> ℹ️ **Note**   
> ℹ️ After the Pulsars are paired to a Beacon, if more than one Beacon is also connected to Evoke, you can transfer paired Pulsars from one Beacon to another from within Evoke (see [Transfer Pulsars between Beacons](#TransferPulsars)).

For the next step in preparing an Evoke system, see [Enable Evoke to track Pulsars and props](https://vicon-help.atlassian.net/wiki/spaces/Evoke18/pages/397967985).

For more information about unpairing and transferring Pulsars between Beacons, see:

- [Unpair Pulsars from a Beacon](#UnpairPulsars)
- [Transfer Pulsars between Beacons](#TransferPulsars)

> Macro (scroll-pagebreak)

### > Macro (anchor)

 Unpair Pulsars from a Beacon

You can unpair Pulsars from a Beacon either by pressing the power button on the Pulsar or (for Pulsars that are connected to Evoke), from within Evoke.


    **Unpair using the power button**


1. Power off the relevant Pulsar with a long press on the power button.
2. Press the power button again to turn on the Pulsar, then double-press within 2 seconds after booting up.  
The Pulsar is now unpaired from the Beacon.


    **Unpair from within Evoke**


To unpair Pulsars that are connected to Evoke:

1. In Evoke, go to the **System** panel, ensure the Beacon is selected, right-click on it and then click **Radio Pairing**.
2. In the **Radio Pairing** dialog box, go to the **Assigned Clusters** list, right-click on one or more selected Pulsars and and then select **Unpair**.   
The selected Pulsars are unpaired from the selected Beacon.

### > Macro (anchor)

Transfer Pulsars between Beacons

You can transfer a Pulsar between Beacons from within Evoke if:

- Both Beacons are connected to Evoke.
- The Pulsar is connected to Evoke and paired to a Beacon.


    **To transfer a Pulsar between Beacons:**


1. In Evoke, go to the **System** panel, ensure the Beacon to which the Pulsar is currently paired is selected, right-click on it and then click **Radio Pairing**.
2. In the **Radio Pairing** dialog box, go to the **Assigned Clusters** list, right-click on the Pulsar you want to transfer, select **Transfer** and then select the required Beacon from the list.

#### Use the Pulsar Reprogramming Tool for transfer

If you're working with a large number of Pulsars, instead of unpairing and transferring as described in the previous section, it may be quicker to use the Pulsar Reprogramming Tool to transfer Pulsars to another Beacon. To do this you must provide the Radio Host ID of the required Beacon.


    **To find the Radio Host ID of a Beacon:**


1. In Evoke, go to the **System** panel and in the **Connectivity Devices** section, select the relevant Beacon.
2. Ensure the advanced properties are displayed > Macro (inline-media-image)

 and in the **Radio** section, note the **Radio Host ID**.

You can now use the Pulsar Reprogramming Tool to pair the Pulsars to another Beacon.


    **To transfer Pulsars via the Pulsar Reprogramming Tool:**


1. Connect the Pulsars that you want to transfer to the PC via USB, either by using the supplied recharging dock or directly, using USB cable(s).
2. From the Windows Start menu, click **Vicon**, then **Vicon Pulsar Reprogramming Tool**.
3. In the Pulsar Reprogramming Tool window:
  1. Select **Pair to a Beacon with Radio Host ID**.
  2. In the adjacent field, enter the ID that you noted earlier.
  The Pulsars are paired to the new Beacon and rebooted.   
When they are ready to be unplugged, their status lights blink.

> Macro (excerpt)
> 
> ### > Macro (anchor)
> 
>  Pulsar status icons in Evoke
> 
> In the **System** panel, in the **Clusters**  part of the System tree, Pulsars that are paired with a connected Beacon are displayed. Adjacent icons indicate the status of the Pulsars:
> 
> ![image](media://9a525fc0-a760-45fc-8f99-f380547f1719)
> 
> > Macro (scroll-pagebreak)
> 
> The following table describes each of the Pulsar status icons that are displayed on the **System** panel in Evoke.
> 
> > Macro (scroll-tablelayout)
> 
> | Icon | Meaning |
> | --- | --- |
> | > Macro (inline-media-image)
> 
>  Cyan | Connected but not assigned a marker pattern |
> | > Macro (inline-media-image)
> 
>  Yellow | Connected but disabled |
> | > Macro (inline-media-image)
> 
>  Gray | Automatically disabled as not linked to a smart object |
> | > Macro (inline-media-image)
> 
>  Green | Enabled and assigned a valid marker pattern |
> | > Macro (inline-media-image)
> 
>  Red | Disconnected |
> | > Macro (inline-media-image)
> 
>  Yellow battery | Battery has low charge (less than 20%) |
> | > Macro (inline-media-image)
> 
>  Red battery | Battery has very low charge (less than 10%) |
> | > Macro (inline-media-image)
> 
>  Lightning bolt | Plugged in for recharging |
> | > Macro (inline-media-image)
> 
>  Update | Evoke has queued or sent new settings to the Pulsar but has not yet received a response |
> | > Macro (inline-media-image)
> 
>  Gray | Loaded from a previous Evoke session but not yet connected to this instance of Evoke |
> 
> Note that the overall system charge is determined by the device with the lowest charge (unless recharging – see the following note), which is shown at the top of the **Clusters **section in the **System** panel.
> 
> The number of devices on charge is also displayed here.
> 
> > ℹ️ **Note**   
> > ℹ️ The information displayed by the **Lowest** **Battery Charge**  indicator depends on the number of devices that are currently charging:
> > ℹ️ 
> > ℹ️ - If some connected devices are currently charging, they are ignored, as they aren't at risk of running out of charge.
> > ℹ️ - If all of the connected devices are recharging (indicated by a lightning bolt icon on the charge bar), they are included, so that you know when they are ready for use.
> 
> > Macro (scroll-pagebreak)
> 
> In the following image, the red battery icon to the right of the Pulsar name indicates that the battery of the relevant Pulsar is low. The **Lowest Battery Charge** indicator shows that the Pulsar with the lowest charge is almost at 0%, ie, almost fully discharged (a Pulsar whose battery is fully discharged can no longer communicate with Evoke and disconnects, and the **Lowest Battery Charge** indicator then displays the Pulsar with the next lowest battery).
> 
> ![image](media://7fceae37-d94d-43f4-8814-95253dd920b2)
> 
> In the following image, the yellow lightning icons to the right of the Pulsar names indicate that the batteries of the relevant Pulsars are charging (and the yellow battery icon indicates that the charge is still low). The **Lowest Battery Charge** indicator shows that the Pulsar with the lowest charge is now at 19%.
> 
> ![image](media://a13a927f-0bda-417c-897e-2c2f6346fd5d)