Evaluating The Measurement Results; Known Problems / Characteristics - B&R Automation PC 3100 User Manual

Commissioning
Information:
If no USB loopback adapters are available, USB flash drives can also be used. The USB flash drives
must be available in Windows as formatted drives. Option "USB" must then be deselected in the test
configuration, and the USB flash drives must be configured as test devices in the disk properties.
Information:
Serial loopback adapters can be created relatively easily by yourself. Just connect some pins with
wires on the serial interface.

6.3.3 Evaluating the measurement results

The recorded maximum temperature value of each individual sensor is not permitted to exceed the temperature
limit specified in the user's manuals.
If the temperature tests cannot be carried out in a climate chamber, they can be carried out in an office environment,
for example. It is necessary to record the ambient temperature, however. Based on experience gained at B&R,
the measured temperature values can be extrapolated linearly to the ambient temperature for passive systems
(systems without a fan kit). In order to also be able to extrapolate the temperature values for systems with a fan
kit, the fans must be running. The speed, etc. must also be taken into account.
If the temperature tests are carried out in a controlled climate chamber with a fan, the devices to be tested are cooled
by this fan and thus the measurement results are distorted. With passive devices, the measurement results are
therefore unusable. In order to be able to carry out temperature tests in climate chambers with fans without distorting
the measurement results, however, the fan of the climate chamber must be switched off and a correspondingly
long lead time (several hours) must be observed.

6.4 Known problems / Characteristics

• USB 2.0 transfer is limited to 150 Mbit/s with SDL4.
• A display is always emulated by the SDL4 transmitter using EDID data and hot plug detection, so DVI-
compatible operation is possible. For this reason, the following behavior may occur during operation with
multiple displays.
In the operating system, a connected panel is reported by the video driver even in the following situations:
° No SDL3/SDL4 cable is connected.
° There is no connection established yet between the SDL4 link module and SDL4 transmitter.
This behavior can be avoided by appropriate configuration in BIOS or via the graphics driver.
• If problems occur with the ETH1 or ETH2 interface (connection abort, slow data transfer, etc.), the Ener-
gy-Efficient Ethernet feature can be disabled in the driver as a possible solution.
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