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GE VMIVME-3125｜Analog Input Board｜
VMIVME-3125 Analog Input Board Overview
The VMIVME-3125 Analog Input board provides automatic scanning of 16 differential or 32 single-ended analog input channels. All channels are digitized using a 12-bit Analog-to-Digital Converter (ADC). Each input channel is overvoltage protected and low-pass filtered, ensuring reliable operation in industrial environments.
The board is designed for ease of use and requires no software configuration. After power-up or system reset, the VMIVME-3125 automatically begins scanning all configured input channels. Conversion data is continuously stored in dual-port memory, allowing immediate access from the VMEbus without processor intervention.
To support diagnostics and maintenance, the VMIVME-3125 includes on-board voltage references that enable both on-line and off-line Built-In Test (BIT) functions. Input voltage ranges, gains, VMEbus base address, and access modes are all user-selectable via jumpers, providing flexible system integration.
Key Features
VMEbus 6U, single-height form factor
16 differential or 32 single-ended analog input channels
Single 12-bit ADC with built-in track-and-hold
Automatic scanning of all input channels at an aggregate rate of 40 kHz
No software initialization required to start data acquisition
Wide input voltage range: ±50 mV to ±10 VDC
Input overvoltage protection
50 kHz low-pass filtering on all analog inputs
Optional 40 Hz low-pass filter daughterboard
Supports discrete wiring or mass-terminated cables
Input pull-down resistors to prevent floating inputs
On-line and off-line Built-In Test (BIT) support
Jumper-selectable gain settings: ×1, ×10, ×100
Selectable A/D input ranges:
±5 VDC
±10 VDC
0 to +10 VDC
VMEbus data access modes: D16, D08 (EO), D08 (O)
Front-panel status LED
GE VMIVME-3125｜Analog Input Board｜
By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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