![Koden KGP-920 Operation Manual Download Page 121](http://html1.mh-extra.com/html/koden/kgp-920/kgp-920_operation-manual_1984742121.webp)
KGP-920
Chapter 11
Technical Reference
(DATA port output circuit)
Device: Driver IC AM26C311 (T.I)
TXD (+)
TXD (- )
AM26C31I
+Vcc
(DATA 2 port input circuit)
Input load: 470 / 2.4k ohm
Device: Photo-coupler TLP181(Toshiba)
RXD (+)
TLP-181
+Vcc
470
RXD (-)
+Vcc
BUZZER STP (+)
TLP-181
2.4k
BUZZER STP (-)
93121662-00
11-9