ADLINK PCI-7260 - Manual (Page 21)

Installation 11
2.6 Relay status output connector (JP3)
Figure 2-4: Relay Status Output Connectors
The PCI-7260 card has 8 on-board LEDs to indicate the operation
status of the relay outputs. In addition, PCI-7260 also has 8 relay
status output channels for users who need external relay status
indicatros. Utilizing 20-pin ribbon connector(JP3) , users can have
their relays status shown outside the chassis. The relay status out-
puts support LEDs which have forward voltage (Vf) lower than 3V
and power consumption lower than 15mA. Each relay output
channel has a current limiting resistor (330O) connected with +5V
power, so users do not need to add a resistor to limit the current
flow through LED.
The direction of the external LED’s connection is shown in Figure
2.4. Before your connect LEDs on JP3 connectors, make sure the
LEDs are in the right direction.
EXT.LED 0-
EXT.LED 1-
EXT.LED 2-
EXT.LED 3-
EXT.LED 4-
EXT.LED 5-
EXT.LED 6-
EXT.LED 7-
JP3
EXT.LED 0+
EXT.LED 1+
EXT.LED 2+
EXT.LED 3+
EXT.LED 4+
EXT.LED 5+
EXT.LED 6+
EXT.LED 7+
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
A K