SFP+ Connectors Pinout
The following figure shows the pinouts for the SFP+ connectors on the PXIe-8238. The
following table lists and describes the SFP+ connector signals.
Figure 3. SFP+ Connector Pinout
NI PXIe-8238
ETH 0
LINK/ACT
LINK/ACT
SPEED
SPEED
ETH 1
VeeR
RD–
RD+
VeeR
VccR
VccT
TD+
VeeT
TD–
VeeT
VeeR
RS1
Rx_LOS
RSO
MOD_ABS
SCL
Tx_Disable
SDA
Tx_Fault
VeeT
10
9
8
7
6
5
4
3
2
20
1
11
12
13
14
15
16
17
18
19
Table 1. SFP+ Connector Signals
Pin
Symbol
Name/Description
1
VeeT
Module Transmitter Ground
2
Tx_Fault
Module Transmitter Fault
3
Tx_Disable
Transmitter Disable; turns off transmitter laser output
4
SDA
2-Wire Serial Interface Data Line
5
SCL
2-Wire Serial Interface Clock
6
Mod_ABS
Module Absent; connected to VeeT or VeeR in the module
10
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PXIe-8238 User Manual
