RBH Sound H485-USB Manual

USB-RS485 Converter
Description
The H485-USB can convert the data from USB port to a half-duplex RS485 signal.
Power is obtained directly from the USB port of the PC so it doesn't require an additional
power supply.

Specifications

1) USB Interface
a) USB1.1, Type A connector
b) Signal: DATA+, DATA-, GND
2) Serial Interface: single port RS485
a) Connector type: DB9
b) Baud Rate: 300~230.4kbps
c) Signal:
DB9 (PIN)
Output Signal T/R+
RS-485 RS485+
3) Size: 55mm X 36mm X 18mm
4) Operation Temperature: -20 – 70°C
5) Operation Humidity: 5 ~ 95% RH
6) Surge Protection: 15Kv ESD for all signals
7) Power Supply: USB 30ma @5vdc
RBH Access Technologies Inc.
Model# H485-USB
1 2 3
T/R- RXD+
RS485-
4 5 6
RXD- GND
GND
7 8 9
Earth
Earth
H485-USB