User Guide (Version 2.2) of the
SiRad Simple® Evaluation Kit
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4
Troubleshooting
Below you can find a number of questions often asked by our customers. If you still cannot find the
answer to your specific question about SiRad Simple®, please write to
4.1 Drivers
4.1.1 Where can I get the driver to connect the SiRad Simple® ?
You need an FTDI cable (delivered with the sensor), also see Section 2.2.2. You can download the
latest FTDI driver (VCP driver) for your FTDI cable from the FTDI Chip Website at
http://www.ftdichip.com/Drivers/VCP.htm
4.1.2 I installed the FTDI driver for the SiRad Simple® but it does not show up.
Please open the Device Manager in Windows and unfold the ‘Ports (COM & LPT)’ section. You
should see a couple of ports there. Now unplug and plug your SiRad Simple® sensor. The sensor
is installed properly if you can see another port show up, usually named ‘USB Serial Port (COMx)’
or similar. If this is not the case, please check your connection and if the device has power.
Remove the FTDI driver and start over with the FTDI driver installation (see Section 2.2.2).
4.1.3 The FTDI driver for the SiRad Simple® does not work properly.
We recommend using a cable with FTDI chipset (delivered with the sensor) instead of cheaper
alternatives since a lot of our customers found the cheaper alternatives to be very unstable, please
also see Section 2.2.2.
4.2 WebGUI
4.2.1 I cannot store presets in the Preset tab.
Please make sure you are not working in the private mode of your browser and you have enabled
cookies, since the presets are stored as cookies, also see Section 3.2.2.
4.2.2 I cannot see any output in the WebGUI window.
Please first set the SiRad Simple ® up for the USB connection. For that, check if the two dip
switches on the SiRad Simple® are set to the off position and if the jumpers are set according to
Section 2.1. If not, unplug the sensor, adjust the settings, and plug it in again. Also check the FTDI
cable connection and if your device is powered properly. Then go to the ‘System Configuration’ tab
and chose SER1, regardless whether you are using a WiFi or UART connection. The SER2 option
is reserved for our SiRad Easy® Evaluation Kit. You can also toggle the ‘Close’ and ‘Open’ button
of the Com2WebSocket tool without closing the WebGUI and see if that helps. Lastly, you can start
over, close all WebGUI / Webbrowser and Com2WebSocket windows, disconnect the SiRad
Simple® sensor and start over with connecting the sensor, connecting the Com2WebSocket tool
and connecting the WebGUI.
4.2.3 The spectrum output jumps (partly).
First, if you are not using the WiFi connection, disable the WiFi module by disconnecting the power
jumper J2. Sometimes it is necessary to turn the AGC-Mode off in the ‘System Configuration’ tab
and manually choose one of the 4 gains using the gain slider. Further, you can try to manually set
and increase the base-frequency in 100 MHz steps to see if that stabilizes the output.