Linear Technology DC1398 Quick Start Manual page 3

LTM9001
NOTE. When driving the ADC driver with a direct DC-coupled path, increased
input bias currents may occur due to the amplifier's input impedance. See
the LTM9001 datasheet for more details.
OTHER BOARD CIRCUITRY
Device U5 is an EEPROM device that is used by the
PScope software to identify the board and apply the cor-
rect settings for the data collection.
USING PSCOPE SOFTWARE
PScope, downloadable from Linear Technology's website
http://www.linear.com/, processes data from the DC890
FastDAACS board and displays FFT and signal analysis
information on the computer screen.
Figure 2. Entering the correct device information for your ADC. Select the correct parameters for the DC1398. Under normal conditions,
PSCOPE should automatically recognize the board and adjust the software settings accordingly.
The on-board EEPROM U5 should enable automatic
board detection and auto-configuration of the software,
but if the user wishes to change the settings, they can
easily do so.
From the Configure menu in the toolbar, uncheck "Auto-
detect Device". The default settings for DC1398 are
shown in Figure 2. The LTM9001 also has an output ran-
domizer, which the user needs to select if it is enabled on
the board. The software will automatically un-randomize
the output by performing an exclusive-OR with each bit
and the LSB.
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