Soft dB Tenor 24bits Data User Guide - Manual (Page 57)

Tenor Data Logger Soft dB inc.
Appendix B: Tenor input/output specifications
Specification Commentary
Direct AC, Direct DC and
ICP inputs SNR 105.0 dB This is the signal–to-noise ratio for the analog input. This
result is for an output dynamic of +-4.5V.
Output SNR 105.0 dB This is the signal–to-noise ratio for the analog output.
This result is for an output dynamic of +-2V.
Input impedance
(Direct DC)
1 kOhms For the direct DC.
Input impedance
(Direct AC and ICP)
18 kOhms For both ICP direct AC inputs.
Output impedance 0.3 Ohms Maximum 38 mA.
Input gain accuracy 0.05dB This is the precision of the input gain. This result is for a
calibrated Tenor. The worse case is close to 0.05 dB.
Input offset accuracy 0.01% This is the precision of the offset. Once calibrated, the
input offset should be close to zero with a precision of
0.01%. This result is for a calibrated Tenor.
Input distortion -92.3dB@2Vpp
-86 dB @4Vpp
-81.4@6Vpp
-77 @8Vpp
-76.3@ 9Vpp
This is the maximum amplitude of the harmonics when a
1000 Hz sine wave is present on an analog input.
Output distortion -94.0 dB This is the maximum amplitude of the harmonics when a
full scale 1000 Hz sine wave is generated by the analog
output.
Input crosstalk -110.0 dB For this test, a full-scale sine wave (1000 Hz) is applied
on a specific input and the sine amplitude is measured on
all others inputs.
Output crosstalk In noise On all output channels, the bandwidth noise is greater
than the cross talk.
User Manual p. 57