DEWESOFT SIRIUS-SBOXe - Lvv2: Specifications

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SIRIUS
® 
TECHNICAL REFERENCE MANUAL 
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5.11. LV / LV+ 
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The LV modules are perfect for low voltage and current measurements in combination with current 
clamps. 
5.11.1. LVv2: Specifications 
Inputs 
Input types 
Voltage 
Full bridge strain 
Current (ext. Shunt) 
ADC Type 
24-bit delta-sigma dual core with anti-aliasing filter 
Sampling Rate 
Simultaneous 200 kS/sec 
Dual Core Ranges (Low 
Range) 
±200 V (10 V) 
±10 V (500 mV) 
±1 V (50 mV) 
±100 mV (5 mV) 
Gain accuracy 
±0.05 % of reading 
Offset accuracy (Dual 
Core) 
±40 (20) mV 
±2 (1) mV 
±0.2 (0.2) mV 
±0.1 (0.1) mV 
Offset accuracy after 
Balance Amplifier 
2 mV 
0.1 mV 
0.02 mV 
0.01 mV 
Typ. Dynamic Range @ 
10 kS (Dual Core) 
-136 dB (-146 dB) 
-137 dB (-152 dB) 
-137 dB (-147 dB) 
-130 dB (-132 dB) 
Typ. Noise floor @ 10 kS 
(Dual Core) 
-109 dB (-118 dB) 
-109 dB (-126 dB) 
-109 dB (-116 dB) 
-97 dB (-97 dB) 
Typ. CMR @ 50 Hz / 400 
Hz / 1 kHz / 10 kHz 
70 / 70 / 60 / 55 dB 
95 / 95 / 89 / 84 dB 
105 / 105 / 100 / 95 dB 
115 / 112 / 107 / 102 dB 
Gain Drift 
Typical 10 ppm/K, max. 30 ppm/K 
Offset Drift 
Typical 0.3 μV/K + 5 ppm of range/K, max: 2 μV/k + 10 ppm of range/K 
Gain Linearity 
<0.02 % 
Inter Channel 
Phase-mismatch 
0.02° * fin [kHz] + 0.1° (@ 200 kS/sec and 10 V range) 
Channel Crosstalk 
-120 dB @ 10 kHz (range ≤10 V); -95 dB @ 10 kHz (range = 100 V) 
Input Coupling (see 1) 
DC, AC 1 Hz (3 Hz, 10 Hz per SW) 
Input Impedance 
200 V Range: 1 MΩ; all other ranges 10 MΩ between IN+ or In- against GND 
Max. common mode 
voltage 
Isolated version ±500 V 
Differential version: 200 V range: ±200 V; all other Ranges: ±12 V 
Input Overvoltage 
Protection 
200 V Range: 300 V; all other ranges: 100 V (250 V peak for 10 msec) 
Excitation Voltage 
Excitation voltage 
Unipolar or Bipolar Software selectable (programmable with 16-bit DAC) 
Excitation Level unipolar 
0…24 Volt; Predefined levels: 1, 2.5, 5, 10, 12, 15 and 24 VDC 
Excitation Level bipolar 
2…30 Volt; Predefined levels: 2.5, 5, 10, 12, 15, 24 and 30 VDC 
Accuracy 
±0.1 % ±5 mV 
Drift 
±50 ppm/K ±100 μV/K 
Stability 
10 % to 90 % load (bipolar) <0.01 % 
Current limit 
200 mA (2 Watt max. per channel, 12 Watt max. per Slice) 
Protection 
Continuous short to ground 
SIRIUS
®
V20-1 158 / 336  