DEWESOFT IOLITE, Technical Reference Manual

Page: 114 / 153

IOLITE®
TECHNICAL REFERENCE MANUAL
5.6.1. STGS: Specifications
Analog inputs
Input type Voltage Full / half / quarter bridge strain (3-wire)
Number of channels 8
ADC Type 24-bit SAR with anti-aliasing filter
Sampling Rate Simultaneous 20 kS/sec per channel (software-selectable)
Voltage Ranges ±1 V ±100 mV ±20 mV
Input Accuracy ±0.03 % of reading, ±0.02 % of range, ±0.1 mV
Typical Noise floor @ 10 kS/s / 1
kS/s / 100 S/s -107 / -114 / -122 dB -99 / -107 / -117 dB -87 / -96 / -108 dB
Typical Dynamic Range @ 10
kS/s / 1 kS/s / 100 S/s -108 dB / / -100 dB / / -113 dB / /
Typ. Crosstalk @ 1 kHz -120 dB -126 dB -114 dB
Typ. CMR @ 50 Hz / 400 Hz / 1
kHz 84 / 85 / 76 dB 108 / 104 / 99 dB 118 / 117 / 113 dB
Gain Drift Typical 10 ppm/K (max. 20 ppm/K)
Offset Drift Typical 0.03 μV/K + 2.5 ppm of range/K, max 0.1 μV/K + 9 ppm of range/K
Gain Linearity < 0.02 %
Input Coupling DC
Analog input performance
Bandwidth (-3 dB) 0.433*fs (Sinc5 filter 0.204*fs)
Alias-free Bandwidth DC to 0.499*fs
Alias Rejection -105 dB (all sample rates)
Delay Through ADC 34 / fs (Sinc5 filter 3 / fs)
Oversampling 128
Excitation Voltage
Excitation Voltage 1 V, 2 V, 5 V
Current Limit 42 mA
Protection Continuous short to ground
Bridge measurement
Bridge Connection Types full bridge strain, ½ bridge strain, ¼ bridge strain (3-wire)
Ranges 2 mV/V, 20 mV/V, 200 mV/V (2 mV/V ... 1000 mV/V free programmable)
Internal Bridge Completion ½ bridge 1 kΩ, ¼ bridge 120Ω and 350 Ω
Bridge Completion Accuracy 0.05 %; TCR: 5 ppm/K (others on request)
Internal Shunt Resistor 100 kΩ software selecteable to SNS+ or SNS- and In+ or In-
Shunt Resistor Accuracy 0.05 %; TCR: 10 ppm/K (others on request)
Input Short, Sensor Offset
Adjust Software-selectable
Additional Specifications
Input connectors Terminal block, D-SUB37, D-SUB9 Micro-D
IOLITE® V20-1 114/153