ViewSmart 200/2050/2150 Controller User's Manual
Document: UM-1021
Revision Level B
28
Figure 3.7
3.1.7
OPTIONAL 4-20mA ANALOG OUTPUT BOARD #10-0223
Important!
10-0223 PCB’s may only be installed into motherboard position P2.
An optional 10-bit 4-20mA analog output board, shown in Figure 3.8, may be added.
Each channel’s output will transmit 4mA for 0% readings and 20mA for 100% readings.
If the ViewSmart 200 primary power is 100 – 240 VAC or at least 24 VDC, 4-20mA
outputs are capable of driving 20mA through a 750 ohm load. Outputs are self powered
and DC power should not be provided by the receiving device. Precision calibration of
the 4-20mA output DAC (digital to analog converter) is accomplished via the
Diagnostics
menu as described in section 2.3.5.
