Connector Pinouts

PORT 0 and PORT 1

Figure 1 shows the pinout for the PXIe-7890/7891 PORT 0 and PORT 1 connectors, followed by pin descriptions.

Figure 1. QSFP Connector Pinout


Table 2. Pin Descriptions for PORT 0 and PORT 1 Connectors
Pin Description
Txn <1..4> Transmitter Inverted Data Input
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 2 shows the pinouts for PXIe-7890/7891CONNECTOR 0 and CONNECTOR 4, followed by pin descriptions.

Figure 1. 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>

Digital Output:

  • Conn0 DO / Ch <0..31>
  • Conn4 DO / Ch <0..31>

EXTCLKIN

External clock input source that can be used for source synchronous acquisitions; the provided clock source must be stable and glitch free

Conn 0 External Clock

Conn 4 External Clock

GND

Ground reference for digital signals

 —

NC

No connection

 —

CONNECTOR 1 and CONNECTOR 3

Figure 3 and Figure 4 show the pinout information for CONNECTOR 1 and CONNECTOR 3. The AO connectors are identical on each device, but differ between modules. Pin descriptions are described in the table below the pinout diagrams.

Figure 1. PXIe-7890 Analog Output (AO) Connectors
Figure 1. PXIe-7891 Analog Output (AO) Connectors
Table 4. Pin Descriptions for CONNECTOR 1 and CONNECTOR 3
Pin Description Signal Name in LabVIEW

AO <0..15> (PXIe-7890)

AO <0..31> (PXIe-7891)

 Analog output signal connection

PXIe-7890:

  • Calibrated: Conn1 AO / Ch <0..15>
  • Calibrated: Conn3 AO / Ch <0..15>
  • Uncalibrated: Conn1 AO Raw / Ch <0..15>
  • Uncalibrated: Conn3 AO Raw / Ch <0..15>

PXIe-7891:

  • Calibrated: Conn1 AO / Ch <0..31>
  • Calibrated: Conn3 AO / Ch <0..31>
  • Uncalibrated: Conn1 AO Raw / Ch <0..31>
  • Uncalibrated: Conn3 AO Raw / Ch <0..31>
GND Ground reference for the analog output signal —
NC No Connection —

CONNECTOR 2

Figure 5 and Figure 6 show the pinout information for CONNECTOR 2, the analog input VHDCI front panel connector. Pin descriptions are described in the table below the pinout diagrams.

Figure 1. PXIe-7890 Analog Input (AI) VHDCI Connector
Figure 1. PXIe-7891 Analog Input (AI) VHDCI Connector
Table 5. Pin Descriptions for CONNECTOR 2
Pin Description Signal Name in LabVIEW

AI <0+...7+> (PXIe-7890)

AI <0+...15+> (PXIe-7891)

 Positive analog input signal connection

PXIe-7890:

  • Calibrated: Conn2 AI / Ch <0..7>
  • Uncalibrated:Conn2 AI / Ch <0..7>

PXIe-7891:

  • Calibrated: Conn2 AI / Ch <0..15>
  • Uncalibrated:Conn2 AI / Ch <0..15>

AI <0-...7-> (PXIe-7890)

AI <0-...15-> (PXIe-7891)

 Negative analog input signal connection
GND Ground reference for the analog input signal —
NC No connection —