Table of Contents
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Chapter 1
Getting Started with the cDAQ Chassis
NI cDAQ Chassis Features
The cDAQ chassis features many ports, DIP switches, LEDs, a RESET button, and a power
button. Refer to Figure 1-1 for the locations of these features on the cDAQ chassis.
Video (VGA) Port
The cDAQ chassis video (VGA) port, shown in Figure 1-1, outputs graphics using VESA
standard VGA analog signaling. Use this port to connect a monitor to program the
NI cDAQ-9138/9139 for Windows. Table 1-3 lists the video port pin locations and VGA
signals.
Pinout
15
5
10
14
4
9
13
3
8
12
2
7
11
1
6
Caution
location or connected to high voltages.
1-22 | ni.com
Table 1-3. Video Port Pin Locations
Pin
Signal Name
1
RED
2
GREEN
3
BLUE
4
No Connect
5
GND
6
RED RETURN
7
GREEN RETURN
8
BLUE RETURN
9
PWR
10
GND
11
No Connect
12
DDC_D
13
HSYNC
14
VSYNC
15
DDC_C
Do not hot-swap VGA devices while the cDAQ chassis is in a hazardous
Signal Description
Red analog video signal
Green analog video signal
Blue analog video signal
—
Ground reference
Ground reference
Ground reference
Ground reference
5 V power for DDC
Ground return for power
—
Data signal of serial communication
Horizontal synchronization signal
Vertical synchronization signal
Clock signal of serial communication
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