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NI High-Speed Digitizers Getting Started Guide
Table 8 describes the signal connections for the NI 5185/5186.
Previous NI 5185/5186 Modules
Early versions of the NI 5185/5186 only support 50
Ω
input impedance. If the front panel of your
NI 5185/5186 looks different from the front panels shown above, you may have an earlier
version of the device. Check the part number of your device to be sure:
•
NI 5185 module part numbers 199363
x
-0
z
L and NI 5186 module part numbers
193537
x
-0
z
L (where
x
is any letter and
z
is any number) only support 50
Ω
input
impedance.
•
NI 5185 module part numbers 152962
x
-0
z
L and NI 5186 module part numbers
152961
x
-0
z
L (where
x
is any letter and
z
is any number) support both 50
Ω
and 1 M
Ω
input
impedance.
Table 8.
NI 5185/5186 Front Panel Signal Connections
Connector
Description
Function
REF CLK
Standard SMB jack connector
Imports an external reference clock to the digitizer.
CLK IN
SMA female connector
Imports an external sample clock to the digitizer.
CH 0
50
Ω
, SMA female connector
Analog input connection; digitizes data and
triggers acquisitions.
CH 0
1 M
Ω
, BNC female connector
Analog input connection; digitizes data and
triggers acquisitions.
CH 1
50
Ω
, SMA female connector
Analog input connection; digitizes data and
triggers acquisitions.
CH 1
1 M
Ω
, BNC female connector
Analog input connection; digitizes data and
triggers acquisitions.
TRIG
SMA female connector
External analog trigger connection.
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