Vaisala Hydromet Data Collection Platform - Manual (Page 357)

Chapter 7 ____________________________________________________________ Technical Data
VAISALA______________________________________________________________________ 355
Leased Line Modem DXL421
Table 83 PSTN Modem Environmental Specifications
Property Description/Value
Operating temperature -40 °C ... +55 °C (-40 ... +131 °F)
Storage temperature -50 °C ... +75 °C (-58 ... +167 °F)
Humidity 20 ... 90 % RH, non-condensing
EMC EN 55022
Immunity
ESD
EN 61000-4-2, contact dis. 4 kV, air dis. 8 kV
RF field EN 61000-4-3
Fast transient bursts (EFT) EN 61000-4-4
Transient surges
EN 61000-4-5
Conducted RF EN 61000-4-6
Vibration IEC 68-2-64 Fh, 10 ... 500 Hz, up to 2.0 G
Free fall IEC 68-2-32 Ed, fall height 1000 mm
Cold IEC 68-2-1, -40 °C 16 hours
Heat IEC 68-2-2, +55 °C 16 hours
Slow change of
temperature, 1°C/min IEC 68-2-14, -40 °C to +55 °C, two cycles
CE marked Yes
Table 84 Leased Line Modem Power Input
Property Description/Value
Supply voltage +5 ... +30 VDC
Power consumption 0.09 W
Fuse 0.5 A PTC
Transient protection Transil diode
Reverse connect protection Yes
Connector 2-pos. screw terminal
Indicator One green LED for power on
Table 85 Leased Line Modem Serial RS-232 Interface
Property Description/Value
Topology RS-232C interface
Serial port speed 300 ... 57600 baud
Connector 6-pos screw terminal
Indicators Three orange LEDs for CD, TxD, and RxD