National Instruments UMI-4A User Manual - Umi-7764 Specifications

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 National Instruments Corporation

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UMI Accessory User Guide — UMI-7764 Specifications

UMI-7764 Specifications

The following specifications apply only to the UMI-7764 accessory. To 

obtain a system specification, you must account for your motion controller. 

Please refer to your controller specifications to determine overall system 

specifications.

Some signals have compatibility defined as signal pass-through. This 

means the UMI-7764 may have passive filtering on these signals but will 

not affect the voltage range or current handling capability. Consult your 

motion controller specifications to determine the allowable voltage range 

and logic level compatibility of the signal.

These specifications are typical at 25 °C unless otherwise specified. Refer 

to your motion controller user manual for detailed specifications on 

encoder inputs, limit and home switch inputs, breakpoint outputs, trigger 

inputs, and analog inputs.

Encoder Interface (Each Axis)

Inputs...................................................... Quadrature, incremental

Differential input threshold .................... ±0.3 V (typical)

Single-ended input threshold ................. TTL/CMOS

Voltage range ......................................... 0 to 5 VDC

Noise filter (RC time constant) .............. 100 ns

Max quadrature frequency ..................... 1 MHz

Limit and Home Switch Inputs (Each Axis)

Noise filter (RC time constant) .............. 10 µs

Compatibility ......................................... Signal pass-through

Trigger Inputs

Noise filter (RC time constant) .............. 100 ns

Compatibility ......................................... Signal pass-through