rtd ATX104HR-EXPRESS, User Manual

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ATX104HR-EXPRESS
User’s Manual
ATX104HR-EXPRESS 14 RTD Embedded Technologies, Inc.
Connector Descriptions:

TB1 : Raw input power to the ATX104HR-EXPRESS, voltage range is 8-32 V
(36V absolute max) DC. Surge suppressor with 36V clamp voltage followed by
transient absorber with cutoff at 39V DC.
Note: The module input power may be up to 100 W, this will require AWG 16 wire (1.14mm
2
)(Make
sure this input wire is kept as short as possible to reduce voltage drops (0.005

/foot) and
inductive spikes (513 nH/foot). Also wrap the input leads at least once every 2 inches to reduce
loop inductance.

TB2 : +5V Output of the main DC/DC power supply

TB2 : +3.3V Output of the main DC/DC power supply

TB2: -12V Output

TB2 : +12V Output

X1 : Remote ON/OFF , close this jumper in the pin 1 to 2 position to disable the
5V STDBY
X1-X2 operations. (highlighted cells are ATX functionality)
X2=installed X2=open
X1=1-2
5V=off
12V=off
-12V=off
3.3V=off
5Vstby=off
5V=off
12V=off
-12V=off
3.3V=off
5Vstby=off
X1=2-3
5V=on
12V=on
-12V=on
3.3V=on
5Vstby=on
5V=off
12V=off
-12V=off
3.3V=off
5Vstby=on

X2: PS_ON# signal. Short to enable all voltages except for 5V STDBY

CN1: PCI express bus

CN3: PCI bus
The output voltages are also indicated on the silk-screen on the bottom side of the module under the terminal
blocks. Check these before making any external power connections. The input of the ATX104HR-EXPRESS is
protected against reverse voltages, but will not withstand long term overvoltage. The transient absorbers will clip all
fast disturbance and noise on the input, but may overheat if continuous overvoltage is present.