Campbell CR300 series - Digital Input;Output - Specifications; Switched Voltage Output - Specifications; Digital I;O Voltage Levels

CR300-Series Datalogger
47
7.7 Digital Input/Output – Specifications
Up to six terminals may be configured for digital inputs or outputs (I/O).
Terminals: SE terminals 1-4
P_SW
C1-C2
TABLE 7-6. Digital I/O Voltage Levels
Terminal High State Low State Drive Current
Maximum
Input Voltage
C1
5.0 V output
3.3 V input
0 V 10 mA at 3.5 V –10 V, +15 V
C2
SE1
3.3 V 0 V 100 µA at 3.0 V –6 V, +9 V
SE2
SE3
3.3 V 0 V 100 µA at 3.0 V ±17 V
SE4
P_SW
7.8 Switched Voltage Output – Specifications
One unregulated voltage output terminal is switched under program control.
Switched 12 Vdc (unregulated)
1
Terminal: SW12V
Thermal Fuse Hold Current: See TABLE 7-7, SW12V Thermal
Fuse Hold Current
(p. 47)
Continuous Analog Output
2
: See Section 7.3, Voltage Excitation
– Specifications
(p. 45)
Control Output: See Section 7.7, Digital
Input/Output – Specifications
(p. 47)
TABLE 7-7. SW12V Thermal Fuse Hold Current
Temperature
(°C)
Current Limit
(mA)
–40° 670
20° 500
70° 290
1
Nonoperational under USB power.
2
Range reduced to 150 to 2500 mV when under USB power.