Measurement ±1.25 V

Measurement mode

±1.25 V

Measuring range, nominal

-1.25…+1.25 V

Measuring range, end value (FSV)

1.25 V

Measuring range, technically usable

-1.342…+1.342 V

PDO resolution (including sign)

24 bit

16 bit 2)

PDO LSB (Extended Range)

160 nV

40.96 µV

PDO LSB (Legacy Range)

149.. nV

38.14.. µV

Input impedance ±Input 1

(internal resistance)

Differential typ. 4.12 MΩ || 11 nF

CommonMode typ. 40 nF against SGND

2) The analog measurement is always done with 24 bits, in 16-bit mode the eight least significant bits are cut off. For further information see chapter “Commissioning”/ “Process data overview”

Measurement mode

±1.25 V

Basic accuracy: Measuring deviation at 23°C, with averaging

< ±0.005 %, < ±50 ppmFSV typ.

< ±62.5 µV typ.

Offset/Zero point deviation (at 23°C)

EOffset

< 15 ppmFSV

Gain/scale/amplification deviation (at 23°C)

EGain

< 40 ppm

Non-linearity over the whole measuring range

ELin

< 25 ppmFSV

Repeatability, over 24 h, with averaging

ERep

< 5 ppmFSV

Temperature coefficient

TcGain

< 2 ppm/K typ.

TcOffset

< 1.0 ppmFSV/K typ.

< 1.25 µV/K typ.

Preliminary data

Measurement mode

±1.25 V

Noise (without filtering)

ENoise, PtP

< 70 ppmFSV

< 547 [digits]

< 87.50 µV

ENoise, RMS

< 12 ppmFSV

< 94 [digits]

< 15.00 µV

Max. SNR

> 98.4 dB

Noisedensity@1kHz

< 0.21 Measurement ±1.25 V 1:

Noise (with 50 Hz FIR filtering)

ENoise, PtP

< 12 ppmFSV

< 94 [digits]

< 15.00 µV

ENoise, RMS

< 2.0 ppmFSV

< 16 [digits]

< 2.50 µV

Max. SNR

> 114.0 dB

Common-mode rejection ratio (without filtering)

DC: >115 dB typ.

50 Hz: >105 dB typ.

1 kHz: >80 dB typ.

Common-mode rejection ratio (with 50 Hz FIR filtering)

DC: >115 dB typ.

50 Hz: >115 dB typ.

1 kHz: >115 dB typ.

Largest short-term deviation during a specified electrical interference test

±0.03% = 300 ppmFSV typ.

Measurement ±1.25 V 2:
Representation ±1.25 V measurement range

Note: In Extended Range Mode the Underrange/Overrange display in the PDO status has the character of an information/warning when the nominal measuring range is exceeded, i.e. no Error is displayed in the PDO status and LED. If the technical measuring range is also exceeded, Error = TRUE is also displayed. The detection limit for Underrange/Overrange Error can be set in the CoE.

In Legacy Range mode, an Underrange/Overrange event also leads to an Error in the PDO status.