Rockwell Automation T3420AF ICS Regent Analog Input Modules - Manual (Page 39)

Analog Input Modules (T3420A, AF)
P D - 6 0 2 3 M a r - 0 6
39
Miscellaneous Input Circuit Specifications
Function Signal Mode Value
I leakage AI1 through AI16 — 50 nanoA (max.)
Rin (re AGND) AI1 through AI16 — 100 Mohm (min.)
Rin (re AREF2) AREF1 — 100 Mohm (min.)
Rin (note 1) AI1 through AI16 SE 100 Mohm (min.)
CMR (note 2) AI1 through AI16 SE 51 dB min.
CMR (note 3) AI1 - AI16 SE 41 dB min.
CMR (note 4) AI1 through AI16 SE 66 dB min.
NMR (note 5) AI1 through AI16 SE (note 5)
Rin (re AGND) AI1/2 - AI15/16 DIFF 100 Mohm (min.)
CMR (note 6) AI1/2 - AI15/16 DIFF 72 dB min.
CMR (note 7) AI1/2 - AI15/16 DIFF 49 dB min.
CMR (note 8) AI1/2 - AI15/16 DIFF 81 dB min.
NMR (note 9) AI1/2 - AI15/16 DIFF (note 9)
Notes:
1) AI1 through AI8 are referenced to AREF1. AI9 through AI16 are
referenced to AREF2.
2) CMR: DC to 20 kHz, AI1-AREF1 through AI8-AREF1, AI9-AREF2
through AI16-AREF2. Referenced to AGND (model T3420A).
3) CMR: Same as note 2 except model T3420AF.
4) CMR: 60Hz, AI1-AREF1 through AI8-AREF1, AI9-AREF2 through AI16-
AREF2. Referenced to AGND.
5) Normal mode rejection (single ended).
6) CMR: DC to 20 kHz, Differential signal referenced to AGND.
7) CMR: Same as note 6 except model T3420AF.
8) CMR: 50 Hz, Differential signal referenced to AGND.
9) Normal mode rejection (differential).