Installation Manual _________________________________________________________________
142 _________________________________________________________________ M210485EN-B
Modem Module DMX501
Table 20 DMX501 Specifications
Property Description/Value
Modem chip 73K324L
Modem chip crystal frequency 11.0592 MHz
USART clock frequency 11.0592 MHz / 2
Register access Operated through an 8-bit bus interface
Connection 2-wire
Point-to-point line or
multidrop modem network
Modem protocols V.21, 300 bps FSK
V.23, 1200 / 75 bps FSK
V.22, 1200 bps DPSK
Line interface
Matched to 600 Ω
TxControl signal Configurable
Supply voltage 5 V (+4.75 ... +5.50 V)
Current consumption
Reset / power-down
Operation
9 mA
26 mA
Transmit level -10 dBm
Maximum distance between
modules
20 km (~12 mi.) with 22 AWG standard
cable
Operating and storage
temperature
-50 ... +70 °C (-58 ... 158 °F)
Humidity 0 ... 100 %RH, non condensing
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