User Manual

Quatech QTM-8524 Manual 11
1.2 QTM-8000 Series Common Features
Communication :
❍
Asynchronous half-duplex 2-wire RS-485 network
❍
Maximum network distance without repeater=4000 feet (1.2Km)
❍
Baud Rates: 600,1200,2400,4800,9600,19200,38400,57600 (bps)
❍
A single network can accommodate multiple devices with different
baud rates and data formats
❍
QTM-8000 series data format=
1 start + 8 data + 1 stop + no parity = 10-bit
❍
Two extra checksum bytes can be enabled or disabled
❍
Built-in transient voltage suppressor and PTC protector
❍
ASCII command/response protocol
❍
Plug-in screw terminal block
Power :
❍
+10V ~ +30V DC
❍
Power reverse protection, over-voltage brown-out protection
System :
❍
Internal Dual watchdog, power-on start value and safe value
for host failure
❍
Operating temperature : -10 to 70ºC (14 to 185ºF)
❍
Storage temperature : -25 to 80ºC (-13 to 185ºF)
❍
Humidity : 5 to 95%, non-condensing
❍
Isolation voltage : 3000 VDC