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first sample control is ignored). When saving data to file, you will be prompted for a maximum number of segments per file. Banks for SMAR Some of the 10-bit Family modules are capable of acquiring data and being read out simultaneously. The -Bn option allows the internal memory of the digitizer to be divided into n banks. To observe the improved acquisition trigger rate achievable in this mode it is suggested to set up the desired conditions and then turn the event display off. The trigger out

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Special cases...................................................................................................................23 2.3.3. Environment variables for the Firmware........................................................................23 2.4. Installing the Hardware..............................................................................................................23 2.5. After Restarting.......................................................................................

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4.9. Additional Waveform Information The Options menu also includes possibilities to obtain additional information about the waveform. In both cases described below the display will be updated after each acquisition. The “Show Segment Timestamps” option shows a display like the one below: It gives you the information needed to better understand the trigger times of the individual segments of an acquisition. By definition the first trigger of an acquisition occurs at t1=0.0. There are two columns

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4.2.3. Numeric Editor The numeric editor is shown in the control window at locations where numeric values are set. The Acqiris Numeric Editor enables easy input of numeric values, particularly those ranging over many decades. The numeric value can be changed in multiple ways. A number can be typed directly into the white number display area or alternatively, the Acqiris Numeric Editor may be used. In order to use the Acqiris Numeric Editor, click on the green numeric editor icon at the left of t

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The DP1400 can also use the PCI Bus at frequencies up to 66 MHz. All modules are compatible for either V I/O = 3.3 V or 5 V. 3.11.2. Environmental and Physical The modules have a Declaration of Conformity according to ISO/IEC Guide 22 and EN45014 and CE Marks of Compliance. The American Standard MIL-PRF-28800F has been used as the source for many of the characteristics specified below. Those indicated with a ‘*’ are compatible with Class 3 as defined in that standard. The front panels of the Com

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Pre- or post-trigger delays are just different aspects of the same trigger positioning parameter: • The condition of 100% pre-trigger indicates that all data points are acquired prior to the trigger, i.e. the trigger point is at the end of the acquired waveform. • The condition of 0% pre-trigger (which is identical to a post-trigger of 0) indicates that all data points are acquired immediately after the trigger, i.e. the trigger point is at the beginning of the acquired waveform. • The condition

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Some models are also capable of a ‘Start on Trigger’ mode of acquisition (see the Programmer’s Guide for further details). The various trigger settings are outlined below. 3.4.1. Trigger Source The trigger source can be a signal applied to either an Input Channel (internal triggering) or the External Trigger Input. For the DC135/DC140/DC211/DC211A/DC241/DC241A/DC271/DC271A/DC271AR modules, a standardized trigger in signal can also be routed via the PXI Bus Star Trigger line. Most digitizers prov

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NOTE: Passive high impedance probes are not suitable for high fidelity measurements above 100 MHz. The non- negligible (5-10 pF) tip capacitance loads the signal causing distortion and/or ringing when combined with the ground lead inductance. 3.3. Data Acquisition The table below summarizes the characteristics discussed in the sections that follow: Model Max. Sampling Rate Max. CONVER TERS PER CHANNEL/ CHANNELS Default Memory points/ channel Maximum Optional Memory/ channel Maximum Segments TTI

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Only the parameters of the modules are stored in the configuration file. This means that parameters of the AcqirisLive program, such as channel activation and display mode choices are not included. 4.5. Store, Autostore and Conversion of Waveforms The store menu gives you two mechanisms to store waveforms. 1. The Store Waveform option allows you to store the last acquired waveform for the current channel. To store the last acquired waveform for each of the active channels, you must sequentially

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To do this, add the following command to the /etc/rc.local file: /sbin/mknod -m 666 /dev/acqrsPCI c 124 0 2.3.3. Environment variables for the Firmware Automatic loading of the firmware needed by 12-bit, analyzer, and averager modules relies on the environment variable AcqirisDxDir pointing to the directory containing the file AqDrv4.ini which in turn points to the directory containing the Firmware .bit files. Therefore, assuming that your Firmware is in /usr/local/AcqirisLinux/Firmware and that





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