This servo card has 2 channels of LM628 servo chip installed. This is the National Semiconductor Servo control chip. Data Sheet here: LM628 DataSheet This card comes with a manual showing you how to use it.
The block diagram above shows how an LM628 is used.
National Instruments has software to support this line of hardware
---- product overview ----
The National Instruments ValueMotion line of products provides for two or four axis stepper motor control. ValueMotion stepper and servo motor expansion boards allow linear 1D, 2D and 3D point-to-point motion, co-ordinated multi axis operation, electronic servo gearing and closed loop stepper motor operation.
• Intelligent 2 or 4 Axis Controll
• Windows NT / 9x Software
• Complete Command Library and DLLs
• Programming possible in LabWindows / CVI, C, C++ and Visual Basic
Stepper Motor Controller Boards:
- Full, half and microstep operation up to 750 000 steps per second
- With or without feed-back inputs from incremental encoders
- Programmable digital inputs and outputs
- Inputs for limit and home switches
- Step and direction, or CW / CCW control outputs
Servo Motor Controller Board:
- 3 kHz PID regulated frequency
- Programmable digital inputs and outputs
- Inputs for limit and home switches
- Feed-back inputs from incremental encoder
- Analogue (+10V) or PWM control outputs
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