PCB LEDs

The PCB LEDs, labeled Dnn, are positioned on the solder side of the 71861 main PCB, as shown below (click on the drawing to enlarge it). The use of each LED is indicated in the table below.

Model 71861 Main PCB, Solder Side LEDs

PCB LED Use

LED

Color

USE

D1

Green

Power supply sequencer done

D2

Red

Power supply sequencer fault detected

D3

Green

Kintex FPGA initialization complete

D4

Red

Kintex FPGA initialization in progress

D5

Green

Kintex PCIe link has been established

D6

D7

Yellow

Kintex active lanes
(LED0 = D6 and LED1 = D7):

 

x1

x2

x4

x8

D6

Off

On

Off

On

D7

Off

Off

On

On

D8

Green

Kintex P16 link has been established

D9

Green

User−defined LED

D10

Red

System monitor alarm

D11

Red

Temperature alarm

D12

Green

CDCM7005 VCXO is OK

D13

Green

CDCM7005 reference clock is OK

D14

Green

CDCM7005 is locked

D15

Red

0.75 V (FPGA Core Power) power failure (LED is off if power is OK)