NI PXIe-7890 Manual de usuario
PXIe-7890/7891
Getting
Started
2023-11-21
Getting Started
PXIe-7890/7891 Getting Started
Note Before you begin, install and configure your chassis and controller.
This document explains how to install, configure, and troubleshoot the PXIe-7890 or
PXIe-7891 module. You can program the PXIe-7890/7891 with the following soware
options.
■NI-FlexRIO driver soware
■NI LabVIEW Instrument Design Libraries for FlexRIO (instrument design
libraries)
Note Adapter modules are not installable or interchangeable on the
PXIe-7890/7891 device.
Unpacking the Kit
Notice To prevent electrostatic discharge (ESD) from damaging the
module, ground yourself using a grounding strap or by holding a grounded
object, such as your computer chassis.
1. Touch the antistatic package to a metal part of the computer chassis.
2. Remove the module from the package and inspect it for loose components or
other signs of damage.
Notice Never touch the exposed pins of connectors.
Note Do not install a module if it appears damaged in any way.
© National Instruments 3
PXIe-7890/7891 Getting Started
3. Unpack any other items and documentation from the kit.
Store the module in the antistatic package when the module is not in use.
What You Need to Get Started
Kit Contents
Verify that the following items are included in the PXIe-7890/7891 kit.
■ PXIe-7890 or PXIe-7891 module.
■PXIe-7890 or PXIe-7891 Safety, Environmental, and Regulatory
Information document.
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PXIe-7890/7891 Getting Started
Recommended Cables
NI recommends the following cables for use with the PXIe-7890/7891.
Connector Cable Description Part Number
CONNECTOR 0 and
CONNECTOR 4
SHC68-C68-D4 68-Pin, Male VHDCI to
68-Pin, Male VHDCI,
50 Ω, Shielded Digital
Cable
781013-01 (0.55 m)
196275-01 (1 m)
781293-01 (2 m)
SHC68-2MDR26- RDIO2 R Series Digital Cable,
1 m
148709-01 (1 m)
SHC68-C68- RDIO2 68-PinVHDCI Male to
68-Pin VHDCI Male,
80 MHz, Shielded
Digital Cable
156166-01 (1 m)
156166-02 (2 m)
CONNECTOR 1 and
CONNECTOR 3
SHC68-C68-D4 68-Pin, Male VHDCI to
68-Pin, Male VHDCI,
50 Ω, Shielded Digital
Cable
781013-01 (0.55 m)
196275-01 (1 m)
781293-01 (2 m)
132625-03 (3 m)
SHC68- 2MDR26-RDIO2 R Series Digital Cable,
1 m
148709-01 (1 m)
SHC68-C68- RDIO2 68-Pin VHDCI Male to
68-Pin VHDCI Male,
80 MHz, Shielded
Digital Cable
156166-01 (1 m)
156166-02 (2 m)
© National Instruments 5
PXIe-7890/7891 Getting Started
Connector Cable Description Part Number
CONNECTOR 2 SHC68-C68-D3 68-Pin, male VHDCI to
68-Pin, male VHDCI,
100 ohm, double-
shielded LVDS cable
188143-01 (1 m)
To be used together with a Read Transition Interface (RTI-12307) in a Switch Load and Signal
Conditioning (SLSC) system.
To be used together with a Read Transition Interface (RTI-12301) in an SLSC system.
Used for Connector 3 when the load side is terminated with 50 Ω.
Recommended Accessories
NI recommends the following accessories for use with the PXIe-7890/7891.
Connector Accessory Description Part Number
CONNECTOR 0 and
CONNECTOR 4
SCB-68 HSDIO Screw Terminal, 68-pin
VHDCI, Shielded I/O
Connector Block
782914-01
CONNECTOR 1 and
CONNECTOR 3
SMB-2153 32-Channel, 1-Pin SMB,
68-Pin VHDCI, Breakout
Connector Block
782648-01
SCB-68 HSDIO Screw Terminal, 68-pin
VHDCI, Shielded I/O
Connector Block
782914-01
CONNECTOR 2 SMB-2145 1-Pin SMB, 68-pin
VHDCI, 16-Channel
Analog Input, NI-5752
Terminal Block
781516-01
The negative analog input will be connected to the common ground GND of the module.
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PXIe-7890/7891 Getting Started
Front Panel and Connectors
Figure 1. PXIe-7890 and 7891 Front Panels
PXIe-7890
FlexRIO Multifunction I/O Module
PORT 1PORT 0
CONNECTOR 1 (2 MS/s/ch, AO 0 to 15)
CONNECTOR 3 (4 MS/s/ch, AO 0 to 15)
CONNECTOR 2 (AI 0 to 7)
CONNECTOR 4 (DIO 0 to 31)
CONNECTOR 0 (DIO 0 to 31)
PXIe-7891
FlexRIO Multifunction I/O Module
PORT 1PORT 0
CONNECTOR 1 (2 MS/s/ch, AO 0 to 31)
CONNECTOR 3 (4 MS/s/ch, AO 0 to 31)
CONNECTOR 2 (AI 0 to 15)
CONNECTOR 4 (DIO 0 to 31)
CONNECTOR 0 (DIO 0 to 31)
The following table describes the signal connections for the PXIe-7890 and
PXIe-7891.
Table 1. Front Panel Connector Descriptions and Functions
Connector Description Function
PORT 0 and PORT 1 QSFP connector, SFF-8436
compliant
High-speed serial interfacing
port
CONNECTOR 0 and
CONNECTOR 4
68-pin VHDCI receptacle Digital IO
CONNECTOR 1 Analog Output
© National Instruments 7
PXIe-7890/7891 Getting Started
Connector Description Function
CONNECTOR 2 Analog Input
CONNECTOR 3 Low-latency analog output
Connector Pinouts
PORT 0 and PORT 1
Figure 2 shows the pinout for the PXIe-7890/7891 PORT 0 and PORT 1 connectors,
followed by pin descriptions.
Figure 2. QSFP Connector Pinout
19
18
17
16
15
14
13
12
11
29 10
20
21
22
23
24
25
26
27
28
9
8
7
6
5
4
3
2
1
30
31
32
33
34
35
36
37
38
GND
Rx2n
Rx2p
GND
Rx4n
Rx4p
ModPrsL
GND
IntL
Vcc Tx
Vcc1
LPMode
GND
Tx3p
Tx3n
GND
Tx1p
Tx1n
GND
GND
Rx1n
Rx1p
GND
Rx3n
Rx3p
SDA
GND
SCL
Vcc Rx
ResetL
ModSelL
GND
Tx4p
Rx4n
GND
Tx2p
Tx2n
GND
Table 2. Pin Descriptions for PORT 0 and PORT 1 Connectors
Pin Description
Txn <1..4> Transmitter Inverted Data Input
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PXIe-7890/7891 Getting Started
Pin Description
Txp <1..4> Transmitter Non-Inverted Data Input
Rxn <1..4> Receiver Inverted Data Output
Rxp <1..4> Receiver Non-Inverted Data Output
SCL 2-Wire Serial Interface Clock
SDA 2-Wire Serial Interface Data
ModPrsL Module Present
ModSelL Module Select
ResetL Module Reset
IntL Interrupt
LPMode Low Power Mode
Vcc Rx +3.3 V Power Supply Receiver
Vcc Tx +3.3 V Power Supply Transmitter
Vcc1 +3.3 V Power Supply
GND Ground
Notice The maximum input signal levels are valid only when the module
is powered on. To avoid permanent damage to the PXIe-7890/7891, do not
apply a signal to the device when the module is powered down.
Notice Connections that exceed any of the maximum ratings of any
connector on the PXIe-7890/7891 can damage the device and the system.
NI is not liable for any damage resulting from such connections.
CONNECTOR 0 and CONNECTOR 4
Figure 3 shows the pinouts for PXIe-7890/7891 CONNECTOR 0 and CONNECTOR 4,
followed by pin descriptions.
© National Instruments 9
PXIe-7890/7891 Getting Started
Figure 3. Digital I/O (DIO) Connectors
Table 3. Pin Descriptions for CONNECTOR 0 and CONNECTOR 4
Pin Description Signal Name in LabVIEW
DIO <0..31> Bidirectional digital input/
output signal connection
Digital Input:
■Conn0 DI / Ch <0..31>
■Conn4 DI / Ch <0..31>
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PXIe-7890/7891 Getting Started
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