Pa. - Pittman has introduced new differential line driver options for its line of brush and brushless DC motors equipped with optical encoders. These line drivers improve signal integrity in noisy environments or over longer transmission distances to ensure position feedback is accurate and not distorted by noise. Differential line drivers provide complementary balanced outputs of each encoder signal. The companion differential receiver detects only the difference in voltage between the two lines.
Differential lines are highly immune to noise pickup and provide excellent common-mode rejection.
A variety of cable assemblies, including ribbon cable, twisted-pair cable, and a wide range of connectors, allow noise and distance requirements to be met. Pittman's standard Hewlett-Packard optical encoders provide resolutions as high as 2048. These encoders are available with single-ended line outputs for applications where noise is not a problem. Other encoders are available to meet specific application requirements. Pittman, an ISO 9001-certified manufacturer, designs and produces both brush and brushless motor products.