Troubleshooting; Software; Hardware; Changes To Software Section - Analog Devices PulSAR AD7685 Manual

8-/10-lead family of 14-/16-/18-bit adcs
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8-/10-Lead PulSAR User Guide

TROUBLESHOOTING

SOFTWARE

To troubleshoot the software, take the following steps:
1.
Always install the software prior to connecting the hardware
to the PC.
2.
Always allow the install to fully complete (the software is a
2-part install, the ADC software and the SDP drivers). This
may require a restart.
3.
When the user first plugs in the SDP board via the USB cable
provided, allow the new Found Hardware Wizard to run.
This may take a little time but allow this to happen prior to
starting the software.
4.
Where the board does not appear to be functioning, ensure
that the ADC evaluation board is connected to the SDP board
and that the board is being recognized in the Device
Manager, as shown in Figure 13.
5.
If connected to a slower USB port where the SDP cannot read
as quickly as it needs to, a timeout error may result. In this
case, it is advised not to read continuously, or alternatively,
to lower the number of samples taken.

HARDWARE

To troubleshoot the hardware, take the following steps:
1.
If the software does not read any data back, do the
following:
a.
Check that the power is applied within the power
ranges described in the Power Supplies section.
b.
Using a voltmeter, measure the voltage present at the
positive terminal of C3 (it should be 7.5 V) and C14
(it should be −2.5 V) and measure the voltage at the
positive terminal of C11 (it should be 5 V). The SDP
board, LED1, should be lit.
c.
Launch the software and read the data. If nothing
happens, exit the software.
d.
Power down the board and relaunch the software.
e.
If no data is read back, confirm that the ADC evaluation
board is connected to the SDP board and that the board
is being recognized in the Device Manager, as shown
in Figure 13.
2.
When the user is working with the software in standalone/
offline mode (no hardware connected) and later chooses to
connect hardware, they must close and relaunch the software.
Rev. C | Page 29 of 31
UG-340

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