Troubleshooting; Connecting The Eval-Adaq23876Fmcz Or; Eval-Adaq23878Fmcz And The Sdp-H1; To The Pc - Analog Devices EVAL-ADAQ23876FMCZ User Manual

User Guide

TROUBLESHOOTING

The SDP-H1 is the communication link between the PC and
the EVAL-ADAQ23876FMCZ or EVAL-ADAQ23878FMCZ.
2 shows a diagram of the connections between the EVAL-
ADAQ23876FMCZ and EVAL-ADAQ23878FMCZ and the SDP-H1.
To ensure that the evaluation system is properly recognized when
it is connected to the PC, install the
SDP-H1 driver before connecting the EVAL-ADAQ23876FMCZ or
EVAL-ADAQ23878FMCZ and the SDP-H1 to the USB port of the
PC.
When the software installation is complete, set up the EVAL-
ADAQ23876FMCZ or EVAL-ADAQ23878FMCZ and the SDP-H1
as described in the

Connecting the EVAL-ADAQ23876FMCZ or

EVAL-ADAQ23878FMCZ and the SDP-H1 to the PC

Verifying the Board Connection

CONNECTING THE EVAL-ADAQ23876FMCZ OR
EVAL-ADAQ23878FMCZ AND THE SDP-H1 TO
THE PC
To connect the EVAL-ADAQ23876FMCZ or EVAL-
ADAQ23878FMCZ and the SDP-H1 to the PC, take the following
steps:
1. Ensure that all configuration links are in the appropriate posi-
tions, as described in Table
2. Connect the EVAL-ADAQ23876FMCZ or EVAL-
ADAQ23878FMCZ securely to the 160-way connector
on the SDP-H1. The EVAL-ADAQ23876FMCZ and EVAL-
ADAQ23878FMCZ do not require an external power supply
adapter.
3. Connect the SDP-H1 to the PC via the USB cable enclosed in
the SDP-H1 kit. Refer to Figure
VERIFYING THE BOARD CONNECTION
To verify the board connection, take the following steps:
1. Allow the found new hardware wizard to run after the SDP-H1
is plugged in to the PC. If using Windows XP
SDP-H1 driver. Choose to automatically search for the SDP-H1
driver if prompted by the operating system.
2. A dialog box may open asking for permission to allow the
program to make changes to the computer. In this case, click
Yes. The Computer Management window opens.
3. Under System Tools, click Device Manager and use
the Device Manager window to ensure that the EVAL-
ADAQ23876FMCZ or EVAL-ADAQ23878FMCZ is connected to
the PC properly.
4. If the SDP-H1 driver software is installed and the board is
connected to the PC properly, Analog Devices SDP-H1 ap-
pears under ADI Development Tools in the Device Manager
window, as shown in Figure
analog.com
EVAL-ADAQ23876/EVAL-ADAQ23878
Figure
ACE software and the
section and
section.
1.
2.
®
, search for the
24.
Figure 24. Windows Device Manager

DISCONNECTING THE EVAL-ADAQ23876FMCZ

OR EVAL-ADAQ23878FMCZ

Always remove power from the SDP-H1 or press the reset tact
switch located along the mini USB port before disconnecting
the EVAL-ADAQ23876FMCZ or EVAL-ADAQ23878FMCZ from the
SDP-H1.

BOARD LAYOUT GUIDELINES

The printed circuit board (PCB) layout is critical for preserving
signal integrity and achieving the expected performance from the
ADAQ23876 and ADAQ23878. A multilayer board with an internal,
clean ground plane in the first layer beneath the ADAQ23876
and ADAQ23878 is recommended. Care must be taken with the
placement of individual components and routing of various signals
on the board. It is highly recommended to route input and output
signals symmetrically. Solder the ground pins of the ADAQ23876
or ADAQ23878 directly to the ground plane of the PCB using
multiple vias. Remove the ground and power planes under the
analog input/output and digital input/output (including F1 and F2)
pins of the ADAQ23876 or ADAQ23878 to avoid undesired parasit-
ic capacitance. Any undesired parasitic capacitance can impact
the distortion and linearity performance of the ADAQ23876 and
ADAQ23878.
The pinout of the ADAQ23876 and ADAQ23878 eases the layout
and allows its analog signals on the left side and its digital signals
on the right side. The sensitive analog and digital sections must
be separated on the PCB while keeping the power supply circuitry
away from the analog signal path. Fast switching signals, such as
CNV± or CLK±, and the DA± and DB± digital outputs must not run
near or cross over analog signal paths to prevent noise coupling to
the ADAQ23876 and ADAQ23878.
Good quality ceramic bypass capacitors of at least 2.2 µF (0402,
X5R) must be placed at the output of LDO regulators generating
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