Voltage Specifications; Compliance; Temperature And Humidity Ranges; Dimensions And Weight - Campbell SDM-SIO1A Instruction Manual

SDM-SIO1A and SDM-SIO4A Serial Input/Output Modules

5.2.2 Voltage Specifications

Connection
Power supply, +12 V connection
RS-232 input threshold low
RS-232 input threshold high
RS-232 input absolute maximum
RS-232 input resistance
RS-232 output voltage swing
RS-485 input (differential)
RS-485 output (differential)
SDM lines (high level)
SDM lines (low level)

5.2.3 Compliance

5.3

Temperature and Humidity Ranges

5.4

Dimensions and Weight

5.4.1 SDM-SIO1A

6
Minimum Voltage
1
7 V
2
0.8 V
–
2 –
3 kΩ
3 ±5 V
200 mV 4
1.5 V (at 50 Ohms)
4.5 V
0 V
1 Voltage values are dc.
2 It is NOT recommended that the user run their SDM-SIO1A at maximum ratings for
extended periods of time.
3 Assuming a worst case 3 kΩ load.
4 It is not recommended that the user allows such low input voltages as there will be an
increased chance that external noise may cause errors in the incoming data.
View the SDM-SIO1A EU Declaration of Conformity at:
www.campbellsci.eu/sdm-sio1a.
View the SDM-SIO4A EU Declaration of Conformity at:
www.campbellsci.eu/sdm-sio4a.
Temperature Range Minimum
Standard range
Humidity Minimum
Standard range
Main body
Height:
Width:
Depth:
Nominal Voltage Maximum Voltage
1
12 V
–
–
±15 V
5 kΩ
±5.4 V
–
–
5 V
–
Maximum
–40 ºC +70 ºC
Maximum
0% 95% (non-condensing)
64 mm (2.51 in)
62.5 mm (2.46 in)
22 mm (0.86 in)
1
30 V
–
2.4 V
±18 V
7 kΩ
–
6 V
–
5.5 V
0.7 V
Notes
Notes