Campbell Hausfeld SDM-CVO4 Manual Do Utilizador

Voltage Mode: 

Range: 0 – 10,000 mV 
Resolution: 2.5 mV 
Maximum Output Current: 30 mA per channel. 
Minimum load current: 5 

μA if output < 200 mV. 

Accuracy (+23

°C) ±0.02% of set voltage,  

+ (

± 2.5 mV). 

Accuracy (-25 to +50

°C) ±0.13% of set voltage,  

+ (

± 2.5 mV). 

 
Current Mode: 

Range: 0 – 20 mA  
Resolution: 5 

μA  

Minimum output current (leakage): 5 

μA at +50°C. 

Accuracy (+23

°C) ±0.02% of full scale range,  

+ (

± 5 μA). 

Accuracy (-25 to +50

°C) ±0.1% of full scale range,  

+ (

± 5 μA). 

Minimum voltage drop across the internal current 
regulating circuit: 2.5 V at 20 mA current flow. 

 
 

Maximum voltage into I

d

 relative to channel ground: 

20 VDC. 

 
 

When in current mode, the V

o

 terminal outputs an 

unregulated voltage source at 15 V nominal (±10%), 
30 mA maximum load.  

 

Please contact Campbell Scientific for the accuracy 
specification on extended temperature tested units. 

Design criteria: 

The unit has an internal isolation barrier and 
components rated to provide signal isolation for 
transients up to 1500 VAC (RMS), 2500 VDC 
nominal. The isolation is between any output and 
the SDM-CVO4 ground connection and between 
individual output channels. 

Protection components are built-in, which will break 
down in a controlled fashion at voltages close to this 
limit (see section 4.5, Safety Issues).  

Tested isolation: 

Each channel of each unit is tested for isolation 
resistance at 500 VDC. Pass level > 10 M

Ω. 

240 VAC RMS differential between an output and 
datalogger ground - providing all issues relating to 
local regulations for safe installation and operation 
are followed (see section 4.5, safety issues).