Spectrum Controls 1762sc-IF8U - Manual (Page 31)

Appendix A: Specifications A-3
User's Manual Pub. 0300243‐02 Rev. B
Input Specifications
Specification Value
Number of Inputs 8 Current/Voltage or 4 Resistance
A/D Converter Type Delta Sigma
Common Mode Rejection 100 dB for 4 Hz & 17 Hz Filters
Normal Mode Rejection 4 Hz Filter 74dB minimum at
50 and 60 Hz
17 Hz Filter 65dB minimum at
50 and 60 Hz
62 Hz Filter First notch at
31Hz, typically
30dB
470 Hz Filter First notch at 237
Hz, typically 35dB
Non-linearity (in percent full
scale) ±0.1%
Input Impedance Current Terminal: 249Ω
Current Input Protection ±42 mA
Voltage Input Protection ±28 V 13
RTD/resistance Excitation
Current
Current in mA
100 Ω Pt α385
200 Ω Pt α385
500 Ω Pt α385
1000 Ω Pt α385
100 Ω Pt α3916
200 Ω Pt α3916
500 Ω Pt α3916
1000 Ω Pt α3916
10 Ω Cu α426
100 Ω Ni α618
120 Ω Ni α672
604 Ω NiFe α518
0 to 150 Ω
0 to 1000 Ω
0 to 3000 Ω
0.42
0.42
0.21
0.21
1.00
0.42
0.21
0.21
2.00
1.00
1.00
0.21
0.42
0.21
0.21
13 The maximum allowable voltage difference between any two input pins is 28V.