Chapter 2
Configuration and Installation
©
National Instruments Corporation
2-3
PCI/PXI-1408 and NI-IMAQ for Win95/NT
Figure 2-2. PXI-1408 Parts Locator Diagram
VIDEO0 Input Mode
VIDEO0 has two different input sources via a BNC connector or a
25-pin DSUB port and two different input modes—referenced
single-ended (RSE) and differential (DIFF) input. When you use the
BNC input for VIDEO0, set the input mode to RSE (W1 populated).
When you use the 25-pin DSUB port for VIDEO0, set the input mode
for either RSE or DIFF.
When in RSE mode, the video input uses one analog input line, which
connects to the video multiplexer circuitry. The negative input to the
video multiplexer is tied internally to analog ground. When in DIFF
mode, the video input uses two analog input signals. One signal
connects to the positive input of the video multiplexer circuitry while
the other input signal connects to the negative input of the video
multiplexer circuitry. Jumper W1 controls the input mode selection, as
1
W2, W3
2
25-Pin DSUB
Connector
3
BNC Connector
4
W1
5
Assembly Number
6
Serial Number
7
J2
8
J4
9
Logical Address
Switch (S1)
10 Product Name
7
8
4
1
10
9
2
3
5
6