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dc1974f
DEMO MANUAL DC1974
The DC1974 is controlled by the PScope
™
System Soft-
ware provided or downloaded from the Linear Technology
website at
http://www.linear.com/software/
. If a Kintex 7
FPGA board and DC2159 were provided, follow the demo
manual of these boards for proper setup.
The Kintex 7 FPGA board will act as the data collection
board and the DC2159 is used to connect the FPGA to
the computer. These boards both are designed to work
seamlessly with PScope, Linear Technology’s data col-
lection software.
To start the data collection software and if “PScope.exe”
is installed (by default) at \Program Files\LTC\PScope\,
double click the PScope icon or bring up the run window
under the start menu and browse to the PScope directory
and select PScope.
If the DC1974 is properly connected to the Kintex 7 FPGA
board and the DC2159, PScope should automatically detect
the DC1974 and configure itself accordingly. If necessary
the procedure below explains how to manually configure
PScope.
Under the “Configure” menu, go to “ADC Configuration...”
Check the “Config Manually” box and use the following
configuration options, shown in Figure 2:
Manual Configuration settings:
Bits: 14
Alignment: 16
Channs: 2
Bipolar: Unchecked
Positive-Edge Clk: Unchecked
If everything is hooked up properly, powered and a suit-
able encode clock is present, clicking the “Collect” button
should result in time and frequency plots displayed in
the PScope window. Additional information and help for
PScope is available in the KC705 guide and in the online
help available within the PScope program itself.
NOTE:
If a PRBS error occurs hit connect again. This
is a bug in the first version of the software.
SERIAL PROGRAMMING
PScope has the ability to program the DC1974 board
serially through the DC2159. There are several options
available for the LTC2124 family that are only available
through serial programming. PScope allows all of these
features to be tested.
These options are available by first clicking on the “Set
Demo Bd Options” icon on the PScope toolbar (Figure 3).
This will bring up the menu shown in Figure 4.
SOFTWARE
Figure 2: ADC Configuration
Figure 3: PScope Toolbar
