51
d)
Turning the VRD ON/OFF (see Figure 13).
•
To turn VRD ON: rotate the trim potentiometer (VR1) on the display PCB fully
clockwise. When VRD is turned ON check that it operates as per VRD Specifications
on page 49.
•
To turn VRD OFF: rotate the trim potentiometer (VR1) on the display PCB fully
counter-clockwise.
WARNING 6
The VRD ON/OFF trim potentiometer MUST ONLY be positioned fully clockwise OR fully
counter clockwise as the VRD function will be unknown for every other position.
Figure 13.
VRD ON/OFF Step D