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Chapter 2 Using the SCXI-1127/1128
SCXI-1127/1128 User Manual 2-2 ni.com
The SCXI-1331 terminal block consists of a shielded board with 84 screw
terminals for easy connection to the SCXI-1127/1128 input connector. The
SCXI-1331 is shown in Figure 2-1.
Figure 2-1. SCXI-1331 Signal Connections
Depending on the input mode configuration of the SCXI-1127/1128, the
SCXI-1331 has a maximum of 64, 1-wire channels; 32, 2-wire channels;
or 16, 4-wire channels. The SCXI-1331 also has terminals for external
triggering signals. The SCXI-1127/1128 supports the standard voltmeter
complete and scanner advanced triggering signals. The following sections
describe signal connections using the SCXI-1331 and the various input
mode configurations. For more information on scanning and triggering,
consult the Hardware-Timed and Software Scanning section.
1 Multiplexer Outputs
2 2-Wire Mode Channel Numbering
3 4-Wire Mode Channel Numbering
4 1-Wire Mode Channel Numbering
5 1-Wire Lo Reference (1_WIRE_LO_REF)
6 External Trigger Input (EXT_TRIG_IN)
7 Scanner Advanced Output (SCANADVD)
8 Ground Reference for Trigger Signals
9 Cable Strain Relief
10 Safety Ground Solder Lug
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