GAUSS INSTRUMENTS TDEMI: Difference between revisions
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It is important to keep in mind that the limitations of the TDEMI cannot be fixed by RadiMation if the hardware is unable to perform the requested measurement. To determine the actual allowed bands on the TDEMI, it is best to perform a manual measurement and use the allowed and working frequency bands to configure the test in RadiMation. | It is important to keep in mind that the limitations of the TDEMI cannot be fixed by RadiMation if the hardware is unable to perform the requested measurement. To determine the actual allowed bands on the TDEMI, it is best to perform a manual measurement and use the allowed and working frequency bands to configure the test in RadiMation. | ||
It is not possible to provide the correct start and stop frequencies of each band in spectrogram mode, as this depends on the selected RBW and installed options. In the past, an error was raised if the configured frequency range was limited by the TDEMI, but it is unclear if this is still the case in newer firmware versions. | It is not possible to provide the correct start and stop frequencies of each band in spectrogram mode, as this depends on the selected RBW and installed options. In the past, an error (https://wiki.radimation.com/wiki/index.php/RadiMation_Error:_805322375 ) was raised if the configured frequency range was limited by the TDEMI, but it is unclear if this is still the case in newer firmware versions. | ||
Revision as of 13:04, 25 April 2023
TCPIP Connection[edit]
The GAUSS INSTRUMENTS TDEMI is controlled using an ethernet connection. The RadiMation® device driver is able to control the GAUSS INSTRUMENTS TDEMI using the TCPIP-stream or the VISA-stream. For these connections it is important that the destination port 21683 is used, because that is the network port that the TDEMI is listening on for new connections.
- For the TCPIP-stream the correct connection string is: tcpip://<IP-ADDRESS>:21683 (where <IP-ADDRESS> is the network IP address and 21683 is the default port of the TDEMI).
- For the VISA-stream the correct connection string for the Visa-ID is: TCPIP::<IP-ADDRESS>::21683::SOCKET (where <IP-ADDRESS> is the network IP address and 21683 is the default port of the TDEMI).
A GAUSS INSTRUMENTS TDEMI can only be controlled by a single program at the same time. This can raise problems when the TDEMI is controlled at the same time by multiple device drivers (like a Scanning Receiver and a LISN device driver). It is important that all TDEMI device drivers are using exactly the same communication addresses to ensure that only a single communication stream is used to communicate with the TDEMI.
Auto step frequency[edit]
When 'Auto step frequency' selected in RadiMation®, the device driver for the TDEMI will select half of the selected RBW bandwidth, and will configure that in the TDEMI. Thus a 1 MHz RBW will result in an auto step frequency of 500 kHz.
Frequency Bands[edit]
The TDEMI Ultra has a measurement bandwidth of 342.5 MHz in spectrogram mode, which can be increased to 685 MHz if the option 685M-UG is available. This limitation is specified on page 9 of the TDEMI Ultra data sheet, under the "Real-Time EMI Receiver (Spectrogram)" section. It is important to note that it is not possible to determine if option 685M-UG is available through the communication bus.
In spectrogram mode, the TDEMI X separates the measurement range into bands, which are up-mixed or down-mixed to the real-time bandwidth. The active band can be automatically switched to another band in receiver mode. The actual measurable bandwidths and bands depend on the selected RBW, which can result in different limitations.
It is important to keep in mind that the limitations of the TDEMI cannot be fixed by RadiMation if the hardware is unable to perform the requested measurement. To determine the actual allowed bands on the TDEMI, it is best to perform a manual measurement and use the allowed and working frequency bands to configure the test in RadiMation.
It is not possible to provide the correct start and stop frequencies of each band in spectrogram mode, as this depends on the selected RBW and installed options. In the past, an error (https://wiki.radimation.com/wiki/index.php/RadiMation_Error:_805322375 ) was raised if the configured frequency range was limited by the TDEMI, but it is unclear if this is still the case in newer firmware versions.