الوصف
产品名称
产品说明
产品参数
• Input Ranges: ±10 V, ±5 V, 0–20 mA, 4–20 mA (jumper-selectable)
• Analog Outputs: 8 single-ended, 16-bit, 100 kS/s update rate, ±10 V or 4–20 mA
• Digital I/O: 16 TTL/24 V lines (via rear I/O connector)
• Isolation: 500 Vrms channel-to-ground, 250 Vrms channel-to-channel
• On-board Memory: 512 kB dual-port RAM for burst-capture buffering
• Bus Interface: 64-bit VME64x slave, A32/D32/D64, supports D64 block transfers up to 80 MB/s
• FPGA: User-programmable Xilinx Kintex-7 70T for custom filters, FFT, or PID loops
• Calibration: Auto-zero/gain drift correction every 10 ms; <30 ppm/°C reference
• Power Consumption: 5 V @ 1.3 A, 3.3 V @ 0.6 A (typical 6.5 W)
• Operating Temperature: –40 °C … +85 °C (conformal-coated option available)
• Shock & Vibration: 30 g operational shock, 5 g vibration 10–500 Hz
• Certifications: CE, UL, ATEX Zone 2, RoHS, IEC 61010-1
优势和特点
• Hot-Swap Ready: Although VMIC+ASSY 11993R2 itself is not hot-swappable, its companion ASSY 11994R13 allows field wiring changes without rack power-down, reducing MTTR.
• FPGA Flexibility: The Kintex-7 FPGA is user-programmable via JTAG or VME mailbox commands, enabling custom DSP algorithms such as FIR/IIR filters or real-time FFT up to 2048 bins.
• Redundant Reference: Dual 5 ppm/°C precision voltage references with cross-checking ensure 0.01 % accuracy over 10 years.
• Wide-Range Front End: Over-voltage protection up to ±60 V survives field mis-wiring; on-board surge arrestors meet IEC 61000-4-5 Level 4.
应用领域应用案例
• Semiconductor Etch Chamber: A 300 mm wafer fab uses VMIC+ASSY 11993R2 to close the loop on 8 MFC (mass-flow controller) analog outputs with <1 ms latency, achieving <0.1 % film-thickness uniformity.
• Aerospace HIL: NASA’s X-57 Maxwell electric-aircraft program uses VMIC+ASSY 11993R2 for real-time motor-controller emulation, leveraging the on-board FPGA for 1 kHz motor-model updates.
竞品对比
Feature | VMIC+ASSY 11993R2 | NI PXIe-4330 | Acromag 3515 | GE IC697ALG320 |
---|---|---|---|---|
Channels (AI) | 32 diff, simultaneous | 8 diff, multiplexed | 16 diff, multiplexed | 8 diff, simultaneous |
Resolution | 16-bit | 24-bit | 16-bit | 12-bit |
Sample Rate | 250 kS/s/ch | 102.4 kS/s aggregate | 100 kS/s aggregate | 200 kS/s/ch |
FPGA | User-programmable | None | None | None |
Isolation | 500 Vrms | 250 Vrms | 250 Vrms | 1500 Vrms |
Temp Range | –40 °C … +85 °C | 0 °C … +55 °C | –40 °C … +70 °C | 0 °C … +60 °C |
Price Point | Mid-range | Premium | Budget | Mid-range |
选型建议
-
High channel density (32 AI + 8 AO) in one slot.
-
Deterministic simultaneous sampling with <50 ns skew.
-
On-board FPGA for custom filtering or control loops.
For lower-channel-count or software-centric applications, NI PXIe-4330 offers excellent driver support. If temperature range is not critical, GE IC697ALG320 provides 12-bit simultaneous I/O at lower cost.
注意事项
• Use shielded twisted-pair (Belden 9468 or equivalent) for analog inputs longer than 3 m to maintain 90 dB CMRR at 100 kHz.
• Firmware revisions prior to Rev C require a jumper change for 24 V digital compatibility—consult factory label on VMIC+ASSY 11993R2.
• Recalibrate every 8,000 operating hours or after any field repair; Emerson offers a NIST-traceable calibration kit (part #: VMIC-CAL-KIT-11993).
VMIC+ASSY 11993R2
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