ADLINK Technology MCM-204, User Manual

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4 Introduction
Leading
EDGE COMPUTING
1.3.3 Isolated Digital I/O
AC Cut-off Frequency
(-3dB) 0.4 Hz
AC Cut-off Frequency
(-0.1dB) 2.4 Hz
Trigger Sources Software, digital trigger, analog trigger, built-in button
Overvoltage Protection ±50 V
Input Impedance 200 k
Ω
between positive input and negative input
115
Ω
between negative input and analog ground
1.5 kVdc between analog ground and chassis ground
Crosstalk -100 dB
Dynamic Range 95 dB
THD (1kHz) -100 dB
THD+N (1kHz) -95 dB
Isolated Digital I/O Specifications
Number of I/O 4-ch DI/O (digital input and output can be configured)
Digital Type TTL input: 0-5 V for DI / Open drain for DO
Input Logic Level Logic low: VIL = 0.8 V max., IIL = 0.2 mA max.
Logic high: VIH = 2.0 V min., IIH = 0.2 mA max.
Overvoltage Protection ±50 V
Supported Modes • Static digital input/output
• Tachometer support (DI 0 only; range:
0.6 Hz~500 kHz; 500 kHz for 1 microsecond)
• External digital trigger in
Analog Input Specifications