Model 914-X Series Modular Multiplexer System User Manual
Focal Technologies Corporation
Page 6-4
A Moog Inc. Company
Document Number: 914-0601-00
Rev.
5.0
6.1.5 914-VDX Diagnostic LED Header
The 914-VDX card includes a 10-pin header capable of driving 8 LEDs. This is useful for LED integration into an
enclosure. Each LED pin is driven low to turn on an LED, and includes a 267 ohm resistor in series to limit the
current draw. Maximum current draw is 8 mA. Refer to section 4.7 for a sample connection diagram.
Serial data activity header pins can be configured for Tx (Transmit Activity), Rx (Receive Activity), or both (Default)
via the diagnostic GUI.
The LED header is FCI P/N 20021521-00010T1LF, and the mating part is FCI P/N 20021444-00010T1LF. This can
be used with most 0.050” (1.27mm) spacing ribbon cables.
Table 6-5: 914-VDX Diagnostic LED Header Pinout
Pin
Name
Description
1
3.3V
3.3V
This pin can be used to drive the LEDs, Maximum current is 0.5A.
2
VIDEO CH1
Indicates a valid video signal is present on channel 1 when lit. Active low.
3
VIDEO CH2
Indicates a valid video signal is present on channel 2 when lit. Active low.
4
SER1 RX
Flashing LED indicates serial channel 1 activity. Active low.
5
SER1 TX
Flashing LED indicates serial channel 2 activity. Active low.
6
SER2 RX
Flashing LED indicates serial channel 3 activity. Active low.
7
SER2 TX
Flashing LED indicates serial channel 4 activity. Active low.
8
EXPANSION LINK
Indicates a valid expansion link is present. Active low.
9
EXPANSION LINK
FAULT
Indicates that the expansion link is in a fault condition. Active low.
10
GND
Ground, non-isolated, connected to 914-HDE input voltage ground.
Figure 6-8: Diagnostic LED Header