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Table 1. SFP+ Connector Signals (Continued)
Pin
Symbol
Name/Description
7
RS0
Rate Select 0; optionally controls SFP+ module receiver
8
Rx_LOS
Receiver Loss of Signal Indication
9
RS1
Rate Select 1; optionally controls SFP+ module transmitter
10
VeeR
Module Receiver Ground
11
VeeR
Module Receiver Ground
12
RD-
Receiver Inverted Data Output
13
RD+
Receiver Non-Inverted Data Output
14
VeeR
Module Receiver Ground
15
VccR
Module Receiver 3.3 V Supply
16
VccT
Module Transmitter 3.3 V Supply
17
VeeT
Module Transmitter Ground
18
TD+
Transmitter Non-Inverted Data Input
19
TD-
Transmitter Inverted Data Input
20
VeeT
Module Transmitter Ground
Note
The PXIe-8238 can perform an automatic crossover, thus eliminating the
need for crossover cables.
Table 2. Link/Activity and Speed Indicator LEDs
Link/Activity LED
Speed LED
No Link
Off
Off
Linked—No Activity
Green
Yellow = 1 GbE
Green = 10 GbE
Linked—Activity
Blinking Green
Yellow = 1 GbE
Green = 10 GbE
PXIe-8238 User Manual
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© National Instruments
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