Measurement Computing USB-2404-UI - Manual (Page 20)

USB-2404-UI User's Guide Specifications
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Table 14. Signal names
Terminal number Signal name Signal description
1 T+ TEDS Data
2 T– TEDS Common
3 EX+/HI (Note 4) Positive excitation or input signal
4 HI Positive input signal
5 EX–/LO (Note 4) Negative excitation or input signal
6 LO Negative input signal
Note 4: Depending on the input mode, terminals 3 and 5 are either excitation signals or input signals.
Table 15. Terminal assignments per input mode
Input mode Signal terminals
1 2 3 4 5 6
Voltage T+ T– — HI LO —
Current T+ T– HI — LO —
4-wire resistance T+ T– EX+ HI EX– LO
2-wire resistance T+ T– HI — LO —
Thermocouple T+ T– — HI LO —
4-wire RTD T+ T– EX+ HI EX– LO
3-wire RTD T+ T– EX+ — EX– LO
Quarter-bridge T+ T– HI — LO —
Half-bridge T+ T– EX+ HI EX– —
Full-bridge T+ T– EX+ HI EX– LO
Accessory products
Table 16. Accessory products
ACC-164 6-position spring terminal connector block (quantity four)
ACC-176 Backshell for use with the ACC-164 6-position spring terminal connector blocks. Provides
strain relief and operator protection from high-voltage signals (quantity four).