V-Chip Microsystems VT-DTMUA5-433M User Manual - Driver
Copyright @ 2013 V-chip Microsystems,Inc
Version: VTDTMUA5-MARCH-2013 v5.0
VT-DTMUA5-433
Driver
The USB interface is a virtual COM Port Device base on USB to UART bridge solution. Install the drivers
before connecting the module to a computer.
The virtual COM Port Device can be found as the Fig 1 shows.
Fig 1 Virtual COM Port Device
Input Voltage
The input voltage of the module ranges from 4.5V to 5.5V. A clean supply voltage is needed for the module
to function correctly.
LEDs
There are 3 LEDs install in the module:
RED_LED: Power-on indicates.
BLUE_LED: Receive data indicate.
GREEN_LED: Transmit data indicate.
Operating Modes
The device can be used in the following operating modes:
1. Transceiver, Buffered data transceiver
2. Setting Mode
The device is default on transparent mode and can select by commands. See “Setting Mode” part in detail.
Transceiver Mode
Transparent mode:
In this operating mode, data of the transmitter module is received via the USB interface and initially buffered.
As soon as specific conditions are met (timeout or data buffer be filled full), the radio telegram is generated with
preamble, Sync word, and Checksum and address information (modules address are the same). As soon as the
transmission of a packet has begun, the USB interface cannot receive any further data.
The receiver module receives the wireless telegram and transmits the payload characters via USB interface.
As long as receiver module is busy in sending characters via the USB interface, wireless telegram reception is not
possible. For example, this effect is noticeable when sending a long data packet and subsequently a short data
packet. In this case, the receiver module may still be busy in sending the first packet via USB interface and the
second packet may be lost.