Features:
- 16 Isolated Differential Low-Level Analog Input Channels
- Channel-to-Channel and Channel-to-VMEbus Isolation to 700 VRMS, 1,000 VDC
- Optional Current Loop Termination Input Resistors
- Buffered High-Level Analog Outputs
- Input Ranges Selectable from ±5 mV to ±10 V
The GE Fanuc / VMIC VMIVME-3417A 16-Channel Isolated Signal Conditioning VME Board is designed to accept low-level differential inputs directly from temperature and pressure transducers, or from any other low-level analog signal source. All 16-channel inputs are isolated from each other and from the VMEbus. Although the VMIVME-3417A Board can be used with any high-level analog input board, it is designed specifically as a companion to VMIC's 64-channel Scanning A/D Converter Boards, such as VMIVME-3113A, -3122.
When used in conjunction with 64-channel A/D boards, the VMIVME-3417A provides full-scale input ranges from ±5 mV to ±10 V. Two-pole low pass input ?lters are available with cutoff frequencies of 4, 40, or 400 Hz. Optional current loop termination input resistors are available, and replace the input ?lter.
Open thermocouple inputs at a gain of x100 and x1,000 are detected by forcing the open channel offscale in the negative direction. An input bias current of approximately 40 nA is provided for this function, and will force the channel output offscale within 3 seconds at a gain of x1,000. Open thermocouple inputs at a gain of x1 and x10 are detected by forcing the open channel within the negative voltage range.
For total cable compatibility with the 64-Channel A/D Converter Boards, the 16 outputs can be jumper designated either as Channels 0 to 15 or as Channels 16 to 31, if installed at P3 and as Channels 32 to 47 or as Channels 48 to 63, if installed at P4. This feature permits two VMIVME-3417A Boards to be connected to either of the 32-channel input connectors on the A/D Converter Board, with a single 96-wire multidrop ribbon cable.
Built-in-Test (BIT) is supported by connecting the output buffers to an externally supplied reference voltage from the P2 connector. BIT is controlled by a TTL P2 input. The VMIVME-4125 is designed to control BIT and provide a calibration reference.
The VMIVME-4125 can produce a reference voltage of zero (cal. zero) and a variety of positive and negative reference voltages that approach full scale or most ADC applications, (cal. span).
The VMIC VMIVME-3417-200 16-Channel Isolated Signal Conditioning VME Board may still be available for purchase and support from Artisan Technology Group beyond End-Of-Life (EOL) by the manufacturer (OEM).
Artisan Scientific Corporation dba Artisan Technology Group is not affiliated with or a distributor for VMIC. The depiction, description, or sale of products featuring names, trademarks, brands, and logos is for identification and/or reference purposes only and does not indicate any affiliation with or authorization by any rights holder.