the end connector. For example, the signal shown on pin 1 maps to pin 73 at the end
connector.
The following NI cables and accessories are not properly shielded for EMC-compliant use
with the NI 6589:
•
NI SMA-2164 accessory
•
NI SHB12X-H3X24 differential flying-lead cable
Note
Whether you use NI cables and accessories or design your own, terminate
cables properly to avoid improper measurements caused by signal reflections,
overshoot, and undershoot.
Accessories
The NI SMA-2164 test fixture is a breakout box for differential signals. This fixture provides
an easy way to connect to other devices for testing and debugging.
The following figure shows how to connect the differential DDC connector to the
NI SMA-2164, using the NI SHB12X-B12X cable. For more information about using the
NI SMA-2164, refer to the
NI SMA-2164/2165 Test Fixture User Guide
.
Figure 1.
Connecting the NI SMA-2164 Accessory
1
2
NI PXI-1042
3
STR
OBE
CLK_L
VPECL
+
+
IO_3
+
–
IO_7
IO_10
I
IO_6
IO_11
IO_13
MADE IN U
.S
.A.
IO_15
A
S
S
Y
1
9
2
5
3
3
A
-
0
1
+
–
+
–
+
+
+
–
–
+
–
–
–
–
I
O
_
1
2
–
–
+
+
–
+
IO_4
IO_5
IO_8
IO_2
IO_9
–
+
–
+
+
–
IO_1
+
–
–
+
+
PFI_3
CLK_L
VDS
+
PFI_2
+
–
+
–
PFI_1
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
IO_0
V
O
S
V
O
S
–
+
S
/
N
–
V
O
S
V
O
S
–
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
V
O
S
6
1
7
0
4
0
4
9
1
9
3
1
1
0
7
3
6
4
6
7
5
2
5
5
5
8
4
3
4
6
3
4
3
7
2
2
2
5
2
8
1
3
1
6
1
4
7
1
V
O
S
NI SMA-2164
DIFFERENTIAL
DIGIT
AL I/O A
CCESSOR
Y
FOR P
ATENTS: NI.COM/P
ATENTS
© COPYRIGHT 2005
NI 6587
PFI 0
CLOCK IN
1 Gbps
LVDS
1. PXI/PXIe Chassis with an NI 6589R
2. NI SHB12-B12X Cable
3. NI SMA-2164
A flying lead cable, the NI SHB12X-H3X24, is also available for differential signals. This
cable offers connectivity similar to that found on a typical logic analyzer, so you can use it in
logic analyzer-type applications. This cable is shown in the following figure.
6
|
ni.com
|
NI 6589 Getting Started Guide