UG-581 Datasheet, PDF (16/28 Pages) Analog Devices – Full-featured evaluation board

EVAL-AD7961FMCZ
TROUBLESHOOTING
This section provides hints on how to prevent problems and
what to check when you encounter problems with the software
and hardware.
SOFTWARE
Review the following points regarding software:
• Always install the software prior to connecting the
hardware to the PC.
• Always allow the install to fully complete (the software
installation is a two-part process: installing the ADC
software and the SDP drivers). This may require a restart.
• When you first plug in the EVAL-SDP-CH1Z board via
the USB cable provided, allow the new Found Hardware
Wizard to run. Though this may take time, do this prior
to starting the software.
• If the board does not appear to be functioning, ensure that
the ADC evaluation board is connected to the EVAL-SDP-
CH1Z board and that the board is recognized in the
Device Manager, as shown in Figure 7.
• If connected to a slower USB port where the EVAL-SDP-
CH1Z cannot read quickly, a timeout error may occur.
In this case, it is advised not to read continuously or,
alternatively, to lower the number of samples taken.
• Note that when reading continuously from the ADC,
the recommended number of samples is up to 65,536.
Evaluation Board User Guide
HARDWARE
If the software does not read any data back,
• With the +12 V wall wart plugged in to the EVAL-SDP-
CH1Z board, check to make sure that the voltage applied is
within the ranges shown in Table 3.
• Using a DMM, measure the voltage present at +12 V and
the VADJ test points, which should read +12 V and 2.5 V,
respectively. The +12V_FMC LED of the EVAL-
AD7961FMCZ board and LEDs of the EVAL-SDP-CH1Z
board (FMC_PWR_GO, SYS_PWR, FPGA_DONE,
BF_POWER, LED0, and LED2) should all be lit.
• Launch the software and read the data. If nothing happens,
exit the software.
• Remove the +12 V wall wart and USB from the EVAL-
SDP-CH1Z board and then reconnect them and relaunch
the software.
• If this is not successful, confirm that the EVAL-
AD7961FMCZ and EVAL-SDP-CH1Z boards are
connected together so that the EVAL-AD7961FMCZ is
recognized in the Device Manager, as shown in Figure 7.
Note that when working with the software in standalone/offline
mode (no hardware connected), if you later choose to connect
hardware, first close and then relaunch the software.
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