The V230 provides high channel-count data acquisition for dense monitoring applications. The 64 channels are individually programmable for both input range and filtering. The three input ranges slightly exceed ±10 V, ±1 V, and ±100 mV, allowing confident measurements all the way to the end of common signaling ranges. For low frequency applications, the programmable sinc2 lowpass filters provide excellent rejection of 50 Hz and 60 Hz harmonics without generating transient overshoots.
From the moment of power-on, with no configuration, the V230 begins scanning all 64 differential input channels and posting the results to VME memory space. Data is presented in real-time as a simple array of 64 values with no handshakes, interrupts, or driver calls required.
Optional built-in self-test provides an on-board voltage source that can be switched into any of the channels for verification, as well as the D9 OpenCal bus to allow verification against external equipment without disconnecting field-wiring connectors.
FUNCTION | 64-channel differential analog-to-digital converter |
DEVICE TYPE | 16-bit VME register-based slave: A24:A16:D16; Implements 256 16-bit registers at switch selectable addresses in the VME 16 or 24 bit addressing spaces |
CHANNELS | 64, fully differential |
RANGES | Programmable per channel ± 102.4 mV ± 1.024 V ± 10.24 V |
RESOLUTION | 16 bits, 3.125 µV on 102.4 mV range |
SAMPLE RATE | Fast mode: 15.625 ksps/channel Slow mode: 976.56 sps/channel |
INPUT IMPEDANCE | 2 MΩ min, either input to ground |
INPUT COMPLIANCE | ± 12V either input to ground |
ACCURACY1 | ± 10.24 V range: ± 5 mV ± 1.024 V range: ± 0.5 mV ± 102.4 mV range: ± 0.3 mV |
CMRR | 80 dB typical |
FILTERING | Programmable per channel: none, 200 Hz Bessel lowpass filter, or 17 Hz sinc2 filter with notches at 50/60 Hz and harmonics |
PROTECTION | ± 30 volts continuous, ± 80 volts for 10 µs, any input to ground |
OPERATING TEMPERATURE | 0 to 60°C; extended MIL/COTS ranges available |
CALIBRATION INTERVAL | Two years |
POWER | VME supplies : +5 volts, 0.8 amp max +12 volts, 200 mA max -12 volts, 200 mA max |
CONNECTORS |
Two 68-pin female SCSI connectors (MD68) for channels D9 male for test (not connected on -1 version) |
INDICATORS | LEDs indicate VME access, CPU activity, error conditions; additional LED is user programmable |
PACKAGING | 6U single-wide VME module |
CONFORMANCE | ANSI/VITA 1-1994 (R2002) VMEbus spec; does not support byte writes |
V230-1: 64-channel VME analog input module with two 68-pin female SCSI connectors
V230-2: 64-channel VME analog input module with two 68-pin female SCSI connectors and BIST
V230-21: 64-channel VME analog input module with two 68-pin female SCSI connectors, BIST, and conformal coating