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LT360 Precision Turntable
DLL Programming Manual
■ Class Get (in)
■ Identifier lt_GetOutputPolarity
■ Hex Value 0xAE
■ Call LT360LIB_CmdValue(Handle, lt_GetOutputPolarity, RtnStr);
■ Returns 'UNIPOLAR' or 'BIPOLAR'
2.45 Get Output Polarity
Description
This command returns the mode for the Analog Output Polarity of the
LT360. The returned string value is either UNIPOLAR or BIPOLAR.
This parameter changes how the LT360 generates the DC voltage
output at the Analog Output connector. When OutputPolarity is set to
UNIPOLAR, the LT360 will produce voltages in the range of 0.000 to
+3.600 volts. All position values are positive. When it is set to BIPO-
LAR, the range will be 0.000 to ±1.800 volts. Both positive and nega-
tive values are produced.
The LT360 has a scale factor of 10mV/deg for the analog output. The
range can be either unipolar (0 ... +3.600V) or bipolar (0 ... ±1.800V).
The output impedance of the analog output is <200 Ohms. Although
the output is an unbalanced BNC connector, it is highly recommended
that the input on the other device be differential to reject ground noise.
Since the smallest resolution of the LT360 is 0.1 degree, the equivalent
resolution in the output is 1mV. The input impedance of the other
device should be at least 100K Ohm to prevent loading errors.
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