USER MANUAL
NI PXIe-7861
R Series Reconfigurable I/O Module (AI, AO, DIO) for PXI Express,
16 AI, 8 AO, 32 DIO, 1 MS/s AIO, 512 MB DRAM,
Kintex-7 160T FPGA
This document provides compliance, pinout, connectivity, mounting, and power information
for the NI PXIe-7861.
Hardware Overview
The following high-level block diagram represents the NI PXIe-7861.
Figure 1. NI PXIe-7861 Block Diagram
Device
Temperature
NI ASIC
Kintex-7
FPGA
Flash
Memory
DIO
Data/
Address/
Control
Overvoltage
Protection
+5 V
Reference
AO
AO (x8)
DAC
ADC
AI
AI (x8)
INA
DIO (x16)
DDR3 RAM
100 MHz
OSC
Overvoltage
Protection
Overvoltage
Protection
NI PXIe-7861
PXIe Connector
Overvoltage
Protection
+5 V
Reference
ADC
AI (x8)
INA
DIO (x16)
Overvoltage
Protection
AI
DIO
(RMIO)
CONNECTOR 1
(RMIO)
CONNECTOR 0
Pinout
TERMINAL 34
TERMINAL 1
TERMINAL 35
TERMINAL 68
TERMINAL 68
TERMINAL 34
TERMINAL 1
TERMINAL 35
+5V
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
DIO6
DIO7
DIO9
DIO11
DIO13
DIO15
AO7
AO6
AO5
AO4
AO3
AO2
AO1
AO0
AISENSE0
AI7+
AIGND6
AI6+
AI5+
AIGND4
AI4+
AI3+
AIGND2
AI2+
AI1+
AIGND0
AI0+
+5V
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DIO8
DIO10
DIO12
DIO14
AOGND7
AOGND6
AOGND5
AOGND4
AOGND3
AOGND2
AOGND1
AOGND0
NC
AI7–
AIGND7
AI6–
AI5–
AIGND5
AI4–
AI3–
AIGND3
AI2–
AI1–
AIGND1
AI0–
68 34
67 33
66 32
65 31
64 30
63 29
62 28
61 27
60 26
59 25
58 24
57 23
56 22
55 21
54 20
53 19
52 18
51 17
50 16
49 15
48 14
47 13
46 12
45 11
44 10
43 9
42 8
41 7
40 6
39 5
38 4
37 3
36 2
35 1
CONNECTOR 0
(RMIO)
+5V
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
DIO6
DIO7
DIO9
DIO11
DIO13
DIO15
NC
NC
NC
NC
NC
NC
NC
NC
AISENSE1
AI15+
AIGND14
AI14+
AI13+
AIGND12
AI12+
AI11+
AIGND10
AI10+
AI9+
AIGND8
AI8+
+5V
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DIO8
DIO10
DIO12
DIO14
NC
NC
NC
NC
NC
NC
NC
NC
NC
AI15-
AIGND15
AI14-
AI13-
AIGND13
AI12-
AI11-
AIGND11
AI10-
AI9-
AIGND9
AI8-
68 34
67 33
66 32
65 31
64 30
63 29
62 28
61 27
60 26
59 25
58 24
57 23
56 22
55 21
54 20
53 19
52 18
51 17
50 16
49 15
48 14
47 13
46 12
45 11
44 10
43 9
42 8
41 7
40 6
39 5
38 4
37 3
36 2
35 1
CONNECTOR 1
(RMIO)
Table 1. NI PXIe-7861 Signal Descriptions
Signal Description
AI+ Positive analog input signal connection
AI- Negative analog input signal connection
2 | ni.com | NI PXIe-7861 User Manual
Table 1. NI PXIe-7861 Signal Descriptions (Continued)
Signal Description
AISENSE Reference connection for NRSE measurements
AIGND Ground reference for the analog input signal
AO Analog output signal connection
AOGND Ground reference for the analog output signal
DIO Digital input/output signal connection
DGND Ground reference for the digital signal
GND Ground connection
Supply (+5 V
out
) 5 V power output connection for external devices
NC No connection
The NI PXIe-7861 is protected from overvoltage and overcurrent conditions.
Note Refer to the NI PXIe-7861 Specifications, available at ni.com/manuals for
more information.
Note The pinout label on the lid of the SCB-68A accessory is incompatible with
the NI PXIe-7861. Refer to the NI 78xxR Pinout Labels for the SCB-68A, available
at ni.com/manuals for the compatible pinout labels.
Connectivity Options
Use the following connection accessories and cables to access the signals on the I/O
connectors.
Table 2. Connection Accessories and Cables
Connector Type Accessory Description NI Part Number
RMIO
NI SCB-68A
Noise Rejecting, Shielded I/O
Connector Block
782536-01
NI SHC68-68RMIO
RMIO Shielded Cable, 68 pin DType to 68 pin VHDCI (1 m)
189588-01
RMIO Shielded Cable, 68 pin DType to 68 pin VHDCI (2 m)
189588-02
NI PXIe-7861 User Manual | © National Instruments | 3
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