very good manual, with detail and clarity in esquematic diagrams and waveforms .
Text excerpt from page 6 (click to view)
TK-868HG
INSTALLATION /
Emergency Mode System Chart
Press the Foot switch once Emergency mode Emergency channel TX 25 sec. � RX 5 sec. � or *1 Foot switch 1 push After 1 min. Horn/Light operation Emergency ACK code receive or Emergency reset code receive *4 [MON] key + Foot SW 1 push Dots *3 LCD dots light *2 LCD dots light Dots
[D/A] key 1 push Horn/Light operation stop
Emergency mode reset Normal operation
*1 : Press and hold the foot switch for about one second. *2 : 3 left most dots light. *3 : 2 right most dots light. *4 : While pressing [MON] key, push foot switch for about one second.
