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SIRIUS

® 

TECHNICAL REFERENCE MANUAL 



5.22. HS-STG / HS-STG+ 

The STG module is THE universal ampliﬁer perfectly ﬁtting for high-speed, high-sample-rate,            

wide-bandwidth strain gage and mid-level voltage measurements with powerful sensor constant           

voltage and current excitation. 

5.22.1. HS-STG Speciﬁcations 

Inputs 

Input types 

Voltage 

Full/Half/Quarter bridge strain (120 Ω and 350 Ω) 

Potentiometer, RTD, Resistance 

Current (ext. Shunt) 

ADC Type 

16-bit SAR 

Sampling Rate 

Simultaneous 1 MS/sec 

Filtering 

See "HS general speciﬁcations" 

Analogue bandwidth 

1 MHz (800 kHz for ranges ≤0.2 V) 

Voltage ranges 

±50, 20, 10, 5, 2, 1, 0.4, 0.2, 0.1, 0.04 and 0.02 Volt 

Input Accuracy 

Signal frequency 

Accuracy 

DC 

Range <10 V: ±0.03 % of reading ±0.04 % of range ±10 μV 

Range ≥10 V: ±0.05 % of reading ±0.01 % of range ±5 mV 

Up to 1 kHz 

±0.03 % of reading ±0.02 % of range 

Up to 10 kHz 

±0.1 % of reading ±0.05 % of range 

Up to 100 kHz 

±2 % of reading ±0.1 % of range 

Up to 500 kHz 

±10 % of reading ±0.5 % of range 

Offset accuracy after 

Balance Ampliﬁer 

Range <10 V: ±0.002 % of range ±3 μV; Range ≥10 V: Not performed 

Typ. Noise ﬂoor 

Bandwidth/Range → 

50 V 

5 V 

0.2 V 

1 MHz 

-87 dB 

-88 dB 

-81 dB 

100 kHz 

-88 dB 

-85 dB 

10 kHz 

<-100 dB 

-94 dB 

Typical CMR 

Bandwidth/Range → 

50 V 

5 V 

0.2 V 

50 Hz 

70 dB 

88 dB 

102 dB 

400 Hz 

70 dB 

86 dB 

100 dB 

10 kHz 

55 dB 

70 dB 

80 dB 

Gain Drift 

Typical 10 ppm/K, max. 30 ppm/K 

Offset Drift 

typical 0.3 μV/K + 15 ppm of range/K, max 2 μV/K + 40 ppm of range/K 

Gain Linearity 

<0.02 % 

Inter channel phase 

mismatch 

0.02° * ﬁn [kHz] + 0.1° (5 V Range) 

Channel Cross talk 

Range <10 V: -120 dB @ 10 kHz; Range ≥10 V: -95 dB @ 10 kHz 

Input Coupling (see 1) 

DC, AC 1 Hz (3 Hz, 10 Hz per SW) 

Input Impedance 

Range <10 V: 10 MΩ; Range ≥10 V: 1 MΩ between INx to GND 

Max. common mode 

voltage 

Isolated version: ±500 V 

Differential version: Ranges ≥10 Volt: ±60 V; all other Ranges: ±12 V 

Over voltage Protection 

Range <10 V: 100 V (200 V peak for 10 msec); Range ≥10 V: 300 V cont. 

Excitation Voltage 

SIRIUS

V20-1 245 / 336  

Brand	DEWESOFT
Model	SIRIUS Series
Category	Data Loggers
Language	English

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