V230 64-channel VME analog input module

Analog Input Module - V230
  • Multiplexed, 64-channel differential A/D converter
  • Each channel is independently programmable for input range and digital lowpass filtering
  • Input ranges of ± 102.4 mV, ± 1.024 volts, and ± 10.24 volts with 16-bit resolution
  • Common-mode rejection 80 dB typ, ± 12 volt common-mode range
  • Overload protected to ± 30 volts on all ranges
  • 15.625 KHz sample rate per channel, 1M s/s total
  • Programmable 200 Hz and 17 Hz filters. The 17 Hz filter notches 50/60 Hz and all harmonics
  • No realtime handshaking is required. Once channel parameters are set up, measurements appear in dual-port memory registers with VMEbus-speed access. Users can read digitized data at any time.
  • Optional test connector supports in-crate calibration check
  • Clearly labeled dipswitches set VME address; no jumpers, headers, or trimpots
  • Optional built-in self-test (BIST)
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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: ± 0.15 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
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
1Accuracy specifications are guaranteed only when adjacent channels are not overloaded. See manual section 5.4 for more information.

PDF Block Diagram: V230 analog input module

PDF Datasheet: V230 analog input module

PDF Manual: V230 analog input module

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

J58: 3′ 68 pin male SCSI to 68 pin male SCSI

V232: 68-pin female SCSI connector to 96-pin female DIN connector adapter cable

V233: 32-channel SCSI termination panel