User manual

Chapter 3 Hardware Overview
NI 6034E/6035E/6036E User Manual 3-2 ni.com
Analog Input
The analog input (AI) section of the NI 6034E/6035E/6036E device is
software configurable. The following sections describe in detail each of
the analog input settings.
Input Mode
The NI 6034E/6035E/6036E device has three different input modes—
nonreferenced single-ended (NRSE) input, referenced single-ended (RSE)
input, and differential (DIFF) input. The single-ended input configurations
provide up to 16 channels. The DIFF input configuration provides up to
eight channels. Input modes are programmed on a per-channel basis for
multimode scanning. For example, you can configure the circuitry to scan
12 channels—four differentially-configured channels and eight
single-ended channels. Table 3-1 describes the three input configurations.
For diagrams showing the signal paths of the three configurations, refer to
the Connecting Your Analog Input Signals section in Chapter 4,
Connecting Signals.
Table 3-1. Available Input Configurations
Configuration Description
DIFF A channel configured in DIFF mode uses two analog
input lines. One line connects to the positive input of
the programmable gain instrumentation amplifier
(PGIA) on the device, and the other connects to the
negative input of the PGIA.
RSE A channel configured in RSE mode uses one analog
input line, which connects to the positive input of the
PGIA. The negative input of the PGIA is internally
tied to analog input ground (AIGND).
NRSE A channel configured in NRSE mode uses one
analog input line, which connects to the positive
input of the PGIA. The negative input of the PGIA
connects to analog input sense (AISENSE).
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