hightek serial converter mini usb to rs232 db9 serial details:

Performance parameters

1. Standards: conforming to USBV1.0, 1.1 and 2.0 and EIARS-232.
2. USB signals: VCC, DATA+, DATA-, GND and FG.
3. RS-232 signals: DCDRXDTXD DTR GND DSR RTS CTS RI
4. Working mode: asynchronous point-to- point.
5. Direction control: adoption of automatic data streamcontrol for automaticrecognition and control of data transmission direction.
6. Baud rate: 300-921.6Kbps, automatic detection of the transmission rate of theserial interface signal.
7. Transmission distance: 5 meters for RS -232 and less than 5 meters for USB.
8. Interface protection: +- 15KVelectrostatic protection.
9. Interface forms: B interface female connector and DB 9 pin female connector for USB.
10. Signal indication: 9 indicator lights for Power (PWR), Send (TXD) and Receive (RXD).
11. Transmission media: twisted-pair cable or shielded cable.
12. Dimensions: 1555mmX55mmX36mm.
13. Working environment: -25°C to 70°C , relative humidity 5%to 95%
14. Windows 7/95/98/2000/XP/Vista and IMAG are supported.
15. Both BUS and external power supply are supported.

Connectors and signal

1,RS-232C pin assignment

2. USB-B female: USB output signals and PIN assignment

Communication Connection Chart

1- Standard USBAtype male connector

2- Filter magnetic pole

3- Transparent and shielded standard 2.0 communication line

4- Fine shell(blue)

5- Standard DB9 male connector

6- MCU adopts the product of the TaiWan chip

USB to RS-232 Communication

DCD 2,RXD 3,TXD 4,DTR 5,GND 6,DSR 7,RTS 8,CTS 9,RI

Problems and troubleshooting

1. Data communication failure

A. Check to make sure USB cable is OK.

B. Make sure RS-232 output interface connection is correct.

C. Make sure power supply is OK.

D. Make sure the wire terminal connection is OK.

E. Make sure the indicator lights flash when receiving.

F. Make sure the indicator lights flash when sending.

2. Data missing or incorrect

A. Check to see whether the data rate and format at both ends of thecommunication equipment are consistent.