Highland Technology V460
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Contents |
Overview
The model V460 is a VME-based versatile source/measurement unit. It includes a programmable constant-current source, a precision programmable gain 16-bit analog-to-digital converter, and a 4-wire, 16-channel analog multiplexer. An internal microprocessor supervises channel scanning according to user loaded parameters, reporting sensor voltage drops or, for selected sensor types, engineering-unit data.
The V460 is ideal for precision temperature measurement, using mixed resistive and diode sensor types. The programmable current sources and low duty-cycle scanning assure low sensor self-heating. Programmable digital filtering allows selectable rejection of AC line hum and other noise sources.
The V460 can measure resistances from 5.12 Megohms full scale (with 78-ohm resolution) to 80 ohms full scale (with 1.22 milliohm resolution); voltages from 5.12 volts full scale to 80 mV full scale may be measured, with resolution to 1.22 microvolts. Extensive internal self-tests help assure accurate measurements.
Features
- Includes 16-Channel, multiplexed, programmable constant-current source and precision analog-to-digital converter.
- Capable of measuring nearly any mixture of resistive-, bridge- or semiconductor-type sensors, using 4-wire connections.
- Ideal for cryogenic applications using mixed sensor types.
- Ultrastable programmable constant current source:
1 uA, 10 uA, 100 uA, 1 mA source currents.
- 16-bit ADC includes programmable gain differential amplifier, autozeroing, and programmable digital noise filtering.
- All parameters are fully programmable for each channel.
- Fully self-scanning without processor intervention: conditioned data is presented in transparent dual-port memory registers.
- Reads sensor voltage drop directly; includes engineering unit conversion for common silicon diode and RTD type temperature sensors.
- Standard 6U VME module; register-based B-size VXI module.
Specifications
| FUNCTION | 16-channel programmable constant-current source and analog-to-digital converter. |
| CONFORMANCE | ANSI/IEEE 1014-1987 VMEbus specification. VXIC specification, Rev. 1.4. |
| PACKAGING | Single-width, 6U VME, B-size VXI module. |
| DEVICE TYPE | Register based slave: A16:D16:D08(EO). |
| ADDRESSING | 128-byte data block in bus A16 address range C000-FF80: bus address is set by onboard dipswitch. |
| SIGNAL INPUT |
16 channels of 4-wire sensor connections via two front-panel D37 female connectors |
| CURRENT SOURCE | Per-channel programmable to 0, 1 uA, 10 uA, 100 uA and 1 mA. Accuracy ±0.01% ±25PPM/K, except 1 uA current is ±0.04% ±50 PPM/K |
| ADC | 16 bits, programmable 0/+5.12 volts or ±5.12 volts full scale; programmable preamplifier gains of 1, 4, 16, and 64 magnify full-scale span to 80mV (LSB resolution 1.22 uV). Accuracy ±0.01% ±25PPM/K. The ADC is monotonic to 16 bits |
| RESISTANCE | Resistance measurements are accurate to ±0.01% ±30 PPM/K for ISRC>1 uA |
| LINEARIZATION | Includes engineering units conversion for Lakeshore cryo-diode sensors and ISO 385 curve platinum RTDs (100 or 1000 ohms) |
| SCAN RATE | Nominal 20 mSec/channel; scans all 16 channels at least 2.5 times per second |
| FILTERING | Per-channel programmable digital lowpass filtering provides selectable time constants up to 128 samples. Sample timing and filtering are optimized for 50/60 Hz hum rejection |
Manuals, drivers, downloads & other resources
http://www.highlandtechnology.com/DSS/V460DS.html
See also
V180 16-channel AC power analysis module. Measures true RMS volts, amps, watts, KWH, power factor, harmonics. Available in PC/AT format as model AT180.
V340 8-channel programmable sine wave/PWM generator with optional BIST.
V346 8-channel arbitrary waveform generator
V350 Function Generator provides 4 analog + 4 digital waveform generators w/ 1 Mword memory per channel
V360 8-channel frequency measurement module measures engine speed in high-noise industrial environments
V365 8-channel tachometer module measures engine speed and provides overspeed underspeed blocks
V370 4-channel programmable arbitrary waveform generator provides simulation of low-frequency waveshapes.
V375 4-channel programmable arbitrary waveform generator, adds user waveform input, burst mode, 300 kHz bandwidth.
V380 8-channel strain-gauge/weighing module. Includes 24-bit ADC per channel, user-programming data filtering, tare, cal functions.
V385 8-channel strain-gauge/load cell module. Includes 24-bit ADC and individual remotely-sensed excitation supply per channel. Excitation switchable between 5 and 10 volts.
V420 8-channel resistance simulator module
V450 16-channel analog input module can acquire a wide range of DC voltages, including thermocouple temperatures.
V470 16-channel analog output module provides programmable isolated outputs as voltage outputs, thermocouple simulation, or RTD signal conditioners.
V550 8-channel LVDT/RVDT physical position sensor; integral transducer excitation and programmable filtering; 16-bit resolution.
V660 12-channel B-size VME time-interval measurement module
V680 8-channel time interval measurement module; measures +/-6800 seconds from trigger with 48-picosecond resolution. Jitter below 40 ps.
V720 6-Channel VME Electrical-to-Optical Converter
V730 6-Channel VME Optical-toElectrical Converter
V850 4-channel digital delay/pulse generator. Provides programmable delays up to 167 ms with 40-picosecond resolution; features agile delay/width programming and jitter < 25 ps (typ).
V851 6-channel version of V850; optional NIM outputs.
V860 multichannel pulse amplifier with risetime of 400 ps at 10V typical.
V880 precision programmable delay generator for timing systems; 1 ps resolution, 3 ps RMS jitter, electrical or optical outputs.
Dealers, trainers, support, maintenance & service centers
Highland Technology, Inc.
United States
California
San Francisco
P: (415) 551-1700
F: (415) 551-5129
http://www.highlandtechnology.com
info@highlandtechnology.com
