The SteelSeries Engine says "Reconnect Headset", but my transmitter is connected!

The following message is shown in SteelSeries Engine if you have the Arctis 7 transmitter connected to the PC but the headset is not detected:

If you see this message it indicates you need to do one of two things:

1. Turn on the headset by holding down the power button for 2 seconds    -OR-
2. Pair the headset to the transmitter.  This should only be necessary if the automatic pairing function fails after a firmware update.  

To pair the headset to the transmitter:

1. On the transmitter hold down the pairing button for 5 seconds.  The white LED will blink rapidly when it enters pairing mode.
2. With the headset off, press and hold the power button for 6 seconds.  You will hear two beeps.
3. You will know the pairing is successful when the LED on the transmitter turns solid.