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NI 9144 User Guide and Specifications
As a DSA module, the NI 9234 does not synchronize to other modules and free-runs at its own
fixed rate.
NI 9234 Configure Module
The NI 9234 has a variety of configuration fields available. Configuration bits <15..8> control
the channel mode, while bits <7..0> set the conversion rate.
Table 74.
NI 9234 Scan List Format
Bits
Field
Description
15
Ch3 IEPE
IEPE Enable 3: When set, the corresponding channel’s
relays are switched to IEPE operation. IEPE operations
switches the AC/DC relay to AC mode and enables the
IEPE relay to send the current to the IEPE sensor.
14
Ch3 AC/~DC
AC/~DC 3: Controls the AC/DC relay when IEPE is not
selected. If IEPE is enabled, then these bits have no
meaning as AC mode is always selected with an IEPE
operation.
13
Ch2 IEPE
IEPE Enable 2: When set, the corresponding channel’s
relays are switched to IEPE operation. IEPE operations
switches the AC/DC relay to AC mode and enables the
IEPE relay to send the current to the IEPE sensor.
12
Ch2 AC/~DC
AC/~DC 2: Controls the AC/DC relay when IEPE is not
selected. If IEPE is enabled, then these bits have no
meaning as AC mode is always selected with an IEPE
operation.
11
Ch1 IEPE
IEPE Enable 1: When set, the corresponding channel’s
relays are switched to IEPE operation. IEPE operations
switches the AC/DC relay to AC mode and enables the
IEPE relay to send the current to the IEPE sensor.
10
Ch1 AC/~DC
AC/~DC 1: Controls the AC/DC relay when IEPE is not
selected. If IEPE is enabled, then these bits have no
meaning as AC mode is always selected with an IEPE
operation.
9
Ch0 IEPE
IEPE Enable 0: When set, the corresponding channel’s
relays are switched to IEPE operation. IEPE operations
switches the AC/DC relay to AC mode and enables the
IEPE relay to send the current to the IEPE sensor.
8
Ch0 AC/~DC
AC/~DC 0: Controls the AC/DC relay when IEPE is not
selected. If IEPE is enabled, then these bits have no
meaning as AC mode is always selected with an IEPE
operation.