USB-6453 (OEM) Pinouts

USB-6453 (OEM) AI Connector Pinout

Use the pinout to connect to analog input terminals on the USB-6453 (OEM).

Figure 110. USB-6453 (OEM) AI Connector Pinout


Table 37. USB-6453 (OEM) AI Connector Pin Assignments
Pin Signal
1 AI 8
2 AI 0
3 AI 9
4 AI 1
5 AI GND
6 AI GND
7 AI 10
8 AI 2
9 AI 11
10 AI 3
11 AI GND
12 AI GND
13 AI 12
14 AI 4
15 AI 13
16 AI 5
17 AI GND
18 AI GND
19 AI 14
20 AI 6
21 AI 15
22 AI 7
23 AI GND
24 NR (AI SENSE)
25 AI GND
26 NR (AI SENSE)
27 AI 24
28 AI 16
29 AI 25
30 AI 17
31 AI GND
32 AI GND
33 AI 26
34 AI 18
35 AI 27
36 AI 19
37 AI GND
38 AI GND
39 AI 28
40 AI 20
41 AI 29
42 AI 21
43 AI GND
44 AI GND
45 AI 30
46 AI 22
47 AI 31
48 AI 23
49 CHSGND
50 ID 0
Table 38. USB-6453 (OEM) AI Connector Signal Descriptions
Signal Function Reference Direction Description

AI <0..7>

AI <16..23>

 Analog input channels Varies Input

Supports differential or single-ended measurement modes. The default configuration is differential mode.

In differential mode, these channels are the positive input for the differential pair. The negative input of the differential pair is located directly beneath the positive input.

In single-ended mode, each signal is a separate analog input voltage channel. The ground reference in single-ended mode is configurable. In referenced single-ended (RSE) mode, AI GND is the reference for the voltage measurement. In non-referenced single-ended (NRSE) mode, the NR pin is the reference.

Note You can configure the input mode per channel.

AI <8..15>

AI <24..31>

 Analog input channels Varies Input

Supports single-ended measurements only. The default configuration is RSE mode. In RSE mode, AI GND is the reference for the voltage measurement. In NRSE mode, the NR pin is the reference.

For differential measurements, refer to the descriptions for AI <0..7> and AI <16..23>.
AI GND Analog input ground — — The reference point for single-ended measurements in RSE mode and the bias current return point for differential measurements.

AI GND, AO GND, D GND, and CHSGND are all connected internally.
NR (AI SENSE) AI SENSE for NRSE mode — Input The AI SENSE pin is labeled "NR" because it is used when the input terminal is configured to NRSE mode. In NRSE mode, AI SENSE acts as a remote sense of a reference voltage that can be at a different voltage potential than AI GND.
CHSGND Chassis ground — — Connects directly to the chassis ground lug of the USB-6453 (OEM). It can be used as a termination point for shielded cables to help improve measurement quality.
ID 0 Identification pin 0 for the AI connector D GND Input or output Can be connected to a 1-wire EEPROM for storing test setup identification information. Leave this pin open if you do not use it. Refer to the ID Pin section for more information.

USB-6453 (OEM) AO/DIO Connector Pinout

Use the pinout to connect to analog output and digital input/output terminals on the USB-6453 (OEM).

Figure 111. USB-6453 (OEM) AO/DIO Connector Pinout


Table 39. USB-6453 (OEM) AO/DIO Connector Pin Assignments
Pin Signal
1 CHSGND
2 ID 1
3 AO GND
4 AO 0
5 AO GND
6 AO 1
7 AO GND
8 AI 2
9 AO GND
10 AI 3
11 D GND
12 +5 V
13 PFI 8/P0.8 (port0/line8)
14 PFI 0/P0.0 (port0/line0)
15 D GND
16 D GND
17 PFI 9/P0.9 (port0/line9)
18 PFI 1/P0.1 (port0/line1)
19 D GND
20 D GND
21 PFI 10/P0.10 (port0/line10)
22 PFI 2/P0.2 (port0/line2)
23 D GND
24 D GND
25 PFI 11/P0.11 (port0/line11)
26 PFI 3/P0.3 (port0/line3)
27 D GND
28 D GND
29 PFI 12/P0.12 (port0/line12)
30 PFI 4/P0.4 (port0/line4)
31 D GND
32 D GND
33 PFI 13/P0.13 (port0/line13)
34 PFI 5/P0.5 (port0/line5)
35 D GND
36 D GND
37 PFI 14/P0.14 (port0/line14)
38 PFI 6/P0.6 (port0/line6)
39 D GND
40 D GND
41 PFI 15/P0.15 (port0/line15)
42 PFI 7/P0.7 (port0/line7)
43 PWR_GR
44 PWR_RED
45 USER_GR
46 USER_RED
47 No connect
48 No connect
49 No connect
50 No connect
Table 40. USB-6453 (OEM) AO/DIO Connector Signal Descriptions
Signal Function Reference Direction Description
AO <0..3> Analog output channels AO GND Output Supplies the voltage output of the AO channels.
AO GND Analog output ground — — AO GND is the reference for the AO channels.

AI GND, AO GND, D GND, and CHSGND are all connected internally.

+5 V +5 V power source D GND Output Provides current limited +5 V power output that can be used to power external circuitry. Refer to the +5 V Power Source section for more information. Leave this pin open if you do not use it.
PFI <0..15>/P0.<0..15> Port 0 digital I/O channels D GND Input or output

Digital channels that can be individually configured as input or output.

These channels are referred to as port0/line0:15 in software when used as digital I/O. They are referred to as PFI 0:15 when used for other purposes, like timing I/O.

Can also be individually configured for the following uses.

  • Digital I/O
  • Counter/timer input
  • Counter/timer output
  • External timing or trigger signal input for AI, AO, DI, DO, counter, or timers
  • Timing or trigger signal output from AI, AO, DI, DO, counter, or timers
D GND Digital ground — — Supplies the reference for the P0.<0..15> pins and +5 V pin.

AI GND, AO GND, D GND, and CHSGND are all connected internally.
CHSGND Chassis ground — — Connects directly to the chassis ground of the USB-6453 (OEM) enclosure. It can be used as a termination point for shielded cables to help improve measurement quality.
PWR_GR USB PWR LED green color D GND Output

Digital logic control signal that is high when the USB PWR LED is green or yellow. You can use this signal to drive an external LED.

Leave this pin open if you do not use it.
PWR_RED USB PWR LED red color D GND Output

Digital logic control signal that is high when the USB PWR LED is red or yellow. You can use this signal to drive an external LED.

Leave this pin open if you do not use it.
USER_GR User LED green color D GND Output

Digital logic control signal that is high when the USER LED is green or yellow. You can use this signal to drive an external LED.

Leave this pin open if you do not use it.
USER_RED User LED red color D GND Output

Digital logic control signal that is high when the USER LED is red or yellow. You can use this signal to drive an external LED.

Leave this pin open if you do not use it.
ID 1 Identification pin 1 for the AO/DIO connector D GND Input or output Can be connected to a 1-wire EEPROM for storing test setup identification information. Leave this pin open if you do not use it. Refer to the ID Pin section for more information.