Pin | Signal | Description |
11,17 | GND | |
12 | Tx | |
13 | Rx |
Here is an alternate pinout, tested. Colors of wires are checked from the data cable of OT835 Data PC Kit USB Connection OTD-09987. Signal level is 2.5V.
Pin | Signal | Signal at the cable | Description |
---|---|---|---|
4 | GND | GND | black |
10 | DTR | DSR | yellow |
11 | DSR | DTR | purple |
12 | TxD | RxD | orange |
13 | RxD | TxD | red |
14 | CTS | RTS | blue |
15 | RTS | CTS | green |
17 | frame ground |