Cirrus Logic CDB4271 - Manual (Page 11)

CDB4271
11
2. INITIAL BOARD SETUP
2.1 Power Supplies:
1) Verify that all power supplies are off before making connections.
2) Connect a +5.0 VDC power supply to the +5V (J1) red binding post. If correct configura-
tion is other than the factory default, select VL and VD operating voltage by placing a
jumper on J8 and J9 to select either +5.0 V or +3.3 V.
3) Connect a +18.0 to +5.0 VDC power supply to the +18V (J6) green binding post. If using
the FILT position number 2 for the output filter stage, +18.0 V is required on J6.
4) Connect a -18.0 to -5.0 VDC power supply to the -18V (J7) yellow binding post. If using
the FILT position number 2 for the output filter stage, -18.0 V is required on J7.
5) Connect the common ground of the power supplies to the GND (J4) binding post.
6) Attach all required analog and digital cables to the board jacks and connectors.
7) If software control is desired, attach parallel port cable between board and PC.
8) If using the External Control Header connection, attach the required user supplied flat rib-
bon cable to the header with the power supplies turned off.
9) With all cables and connections in place, turn on the power supplies to the board. Turn on
supplies in this order: +5 V, +18 V, -18 V.
10)Press and release the RESET switch S2. The LED, D5, will illuminate as long as S2 is
depressed indicating a reset condition. Once S2 is released, the LED should turn off. If it
remains on, an error has occurred. At this point, power off the power supplies and re-
check all connections. Apply power to the board and press and release S2. Once the LED
has turned off, the board will be setup for use.
2.2 Installing the Software:
1) Create a directory called CDB4271 anywhere on your PC.
2) Copy CDB427X.exe from the included CD into this directory.
3) Run port95nt.exe from the CD. After running the program the system will need to
be restarted.
4) If desired, create a shortcut to CDB427X.exe on your desktop. You should now be able to
run CDB427X.exe. Double-click on CDB427X.exe or its shortcut.
5) Select the LPT port you are using to connect to the CDB4271.
6) Shut down the application, reset the board, and then restart the application.