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Installation and Usage
Deva018 Single Axis Sine-Wave Interpolator
User’s Manual
2.2
Test point connector
If tuning of the reader head is required, it is possible to enable test mode by connecting pin 3
of either connector to 0V. In test mode pins 1,2,6 & 7 of the output connector will provide the
buffered A and B signals. All four outputs should be 0.5Vpp and biased around 2.5V.
Important : Do not connect the Deva018 to the target controller when test mode is enabled.
The test connections shown above are recommended.
2.3
Configuration Solder Pads
There are eight pairs of solder pads that must be shorted to change the configuration of the
Deva018, as shown in Figure 2.1 and associated tables.
Note: The default configuration is 11µA, x10 interpolation, with no termination and is shown
shaded grey in the tables.
IMPORTANT : These instructions refer to RevD, and later, Deva018 interpolators with serial
numbers from 38228 and onwards.
HD 15-way Female
A term
B term
M term
CFG0
CFG1
CFG2
CFG3
CFG4
HD 15-way Male
Figure 2.1 Deva018 Solder Pad Location
