General Specifications:
The document outlines the specifications for two series of stepper motors with integrated drivers: the 4T42 Series and the 4T56 Series. Both models operate with a power input of DC18~30V and have different rated currents and step resolutions.

4T42 Series:
- Model No.: 4T4218-6I
- Rated Current: Max 1.5A
- Step Resolution: 200, 400, 800, 1600 (-A) or 3200 (-B)
- Auto Current Down: 0.52%
- Control Mode: 1 Pulse
- Max. Pulse Rate: 150K Hz
- PWM: 2us (Min)
- Direction Response Time: 20us (Min)
- Input Signal: +4 ~ +10V <20mA
- Input Signal Resistance: 220Ω
- Output Signal: Open loop, 24V, 10mA (Max)
- Noise Insulation: Photo Coupler
- Connection: Movable slot
- Operating Temperature: 0°C to +40°C

4T56 Series:
- Model No.: 4T5618-6I
- Rated Current: Max 2A
- Step Resolution: 200, 400, 800, 1600 (-A) or 3200 (-B)
- Auto Current Down: 0.52%
- Control Mode: 1 Pulse
- Max. Pulse Rate: 150K Hz
- PWM: 2us (Min)
- Direction Response Time: 20us (Min)
- Input Signal: +4 ~ +10V <20mA
- Input Signal Resistance: 220Ω
- Output Signal: Open loop, 24V, 10mA (Max)
- Noise Insulation: Photo Coupler
- Connection: Movable slot
- Operating Temperature: 0°C to +40°C

Performance Curves:
The document includes motor speed torque performance curves for both series, illustrating the relationship between speed (P.P.S.) and torque (Kg-cm). The curves show pull-out and pull-in torque values at various speeds.

Control Diagrams:
Control diagrams are provided for both series, detailing the step resolution settings based on switch positions.

Contact Information:
The document provides contact details for Telco Intercontinental Corp., located at 9812 Whithorn Dr., Houston, TX 77095, with phone and fax numbers, and an email address for further inquiries.