ABB Connection Unit Model no :- DSTA 133 Part No :- 57120001-KN/1 Number of Channels :- 16 Type of input :- 8 diff + 8 sing Input impedance(at voltage input) :- 2M Shunt resistance :- 250 Shunt inaccuracy :- 0.05% Low Pass Filter, number of poles :- 2 Limit Frequency (3dB) :- 6.5Hz Attenuation of 50/60 Hz :- >40 times Resolution :- 12 bits +sign Max inaccuracy excl. shunt with gain=1 :- 0.03%