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STEP1 and STEP2 Specifications
Configuration: One STEI'l required to drive 1 to 4 STEP2 Modules
Channels: One motor channel per STEP2 module
STEP2 Outputs: LS TTL compatible, high true
Output High: 0.4mA source @ 2.7V min.
Output Low: 4mA sink @ 0.W max.
Output Signals: four; CW/=, ccwl~, pulse and pulse
rulse Signal Duration: 50% duty cycle
STEP2 Limit Input: LS 1TL compatible, low true or switch closure to
ground (internal pull-up resistor provided)
Input High: 3.2V min.
Input Low: 0.4mA @ 0.9V max.
Signal Duration: >jOns
Slew Rate: 1 to 65,535 steps per second maximum in lsps increments,
software programmable
Speed Accuracy: 0.01% of full scale frequency
-D Positioning Modes:
c
Absolute: 65,535 positions
Relative: f65.535 steps
Positioning Speed: 16,OOOsps
maximum, soft,.vare programmable
Ramp Rates: 15 rates, software selectable from 4,096sps' to 32,768'
STEI'Y on-board Microprocessor: 68809 8116bit
Command Buffer Size: approx. 66 commands per motor (233 bytes)
Commands: 14high level commands callable from BASIC and fully inte-
grated with Keithley's SOETSM)extended BASIC measurement and
control software.
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I / APP. ' DATE
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I SPECIFICATIn"`c
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