![Scherrer UHF Tx700Lite Manual Download Page 11](http://html1.mh-extra.com/html/scherrer-uhf/tx700lite/tx700lite_manual_1211707011.webp)
10
Head Tracker
The Head tracker input must be 6 channels PPM. It accepts positive or negative polarization, variable or
fixed frame rate auto detect and auto handle. Channel 5 and 6 are the two HT (PAN/TILT) signals. They are
added after the used MAIN-PPM channels. In case the main PPM signal got 12channels in it, there are no
free channels to use. Then the two HT signals will be merged into channel 10 and 11, leaving channel 12
free to use for the main PPM. The reason for this is easy to understand, look at the receivers: the channel
12 connector can be either PPM out or servo channel 12 out, the different output mode is configured on
the RX, in case you need PPM out and use a HT at the same time, you need off course the HT signals to be
on ch. 10-11 where normal servo connectors exist.
Tx700Pro
The head tracker input is integrated in the Tx700Pro