Current Measurement Test Points:
The
PCIeEXT-16
allows real-time measurement of power consumption during board operation.
A voltmeter or oscilloscope can be connected with its “+” lead to either the +12 CURR, +3.3
CURR or +3.3AUX CURR white test points, and its “-“ lead to the black GND test point. The
voltage output on these test points has a 1:1 Volt-to-Ampere correspondence. Hence, a reading of
2.4V on the +3.3 CURR test point indicates that the UUT is drawing 2.4
amperes
from the +3.3V
supply.
4.
Installing the PCIeEXT-16 into a system:
To install the PCIe extender, power down the host computer and install the
PCIeEXT-16
into a
x16 PCIe slot.
Secure the extender using a screw in the metal bracket, and engage the
retention mechanism (if present)
.
Power up the host computer.
Note that
for proper
operation, the
PCIeEXT-16
must be installed in a PCIe slot with all PCIe voltages (+12,
+3.3, +3.3aux) present.
After insuring that the computer is operating correctly, power down the computer and plug in a
known good
Unit Under Test (UUT) into top of the extender card. Repeat the power-up process
to verify that the UUT is functioning correctly.
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