The programs can be changed, as required by user, easily. In other case we have to replace hardware to fulfill our new need. User is able to analyze acquired data in more detailed and friendly manner. Required characteristics can also be analyzed with the help of graphs.
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Manual zz. If you decide to upgrade the firmware in your instrument, follow the instructions in the manual. Alternatively, you can arrange to have Keithley Instruments upgrade your firmware at the factory by calling your local Keithley Instruments support office. Upgrade considerations for all Series A models The following table lists the considerations that should be made when deciding whether to upgrade your Series A instrument firmware to version 2.
Backward compatibility concerns? Requalification recommended? Should you upgrade? No No Yes1 Review2 From versions 2. Review the entire list of changes made in all firmware versions between your current version and version 2. Upgrade if any of the fixes or enhancements are needed.
This release adds one enhancement and fixes one noncritical issue. When this bit is set, it indicates that either the interlock is not engaged, or that the interlock was engaged recently and the high voltage supply is still stabilizing.
If the interlock is engaged and this bit is set, attempting to turn on the output on the V range will result in error code , "Interlock engaged; system stabilizing. Resolution: This issue has been corrected.
Maintenance support for the Series A is limited. Although these known issues will not be addressed on the Series A, most of them have been or will be addressed on the Series B. A known situation that causes this is using TSP-Net to send a large number of messages to a remote instrument. The instrument may ignore commands sent over the command interfaces and may ignore front panel operations.
Workaround: To avoid out-of-memory issues, you should leave 1 MB of dynamic memory available for instrument use. The meminfo function can be used to monitor the actual free memory remaining. The instrument will abort properly even though the prompt is not generated. The tsplink. Workaround: To work around this issue, call the collectgarbage function prior to creating a new reading buffer. Exception: Cannot read from instrument" error. The tool appears to work but will not show any saved scripts, nor will it run new scripts.
For example, with tspnet. PR Models affected: A, A, A, A, A, A Symptom: When loading a script using an invalid script name, the instrument loads the script as the anonymous script and does not generate an error. PR Models affected: A, A, A, A, A, A Symptom: When nonprintable control codes are embedded in the text passed as parameters to display functions such as display. The instrument beeps or buzzes. Similarly, if digio. For example, a 1. PR Models affected: A, A, A, A, A, A Symptom: After executing a sweep with source autoranging enabled, if the sweep leaves the SMU on a source range higher than the one it started on, attempting to disable source autoranging using the smuX.
PR Models affected: A, A, A, A, A, A Symptom: Rarely, the instrument boots very slowly, pausing for several minutes with two dots on the front panel display, and requiring more than ten minutes total to complete its boot sequence. Afterward, certain commands malfunction, each requiring more than 30 seconds to execute. These commands include: trigger. Turning the instrument off and then on again corrects the issue. As such, the source action will not proceed as expected if smuX. Turning the output off when smuX.
Additionally, changing the current source range often corrects the issue. When the output is in this state, setting smuX. PR Models affected: A, A, A, A, A, A Symptom: With open leads, rapidly executed contact check measurements erroneously return 0 ohms, instead of the expected 9.
This release resolves one critical and several noncritical issues. Noncritical fixes PR Models affected: A, A, A, A, A, A Symptom: When sourcing voltage and measuring current with measure autoranging enabled, if the current flowing through the SMU terminals momentarily exceeds a setpoint of approximately mA, the next reading will occur on the 1 A range or greater, even if a smaller range would be more appropriate for the signal. The autoranging routine resumes its expected behavior on the following reading.
Running any of these web applications brings users to a Keithley support login website. An incorrect application name is shown on the security dialog box. The degradation may occur when a number of small packets are exchanged across the socket. This is caused by the Nagle algorithm which delays ethernet packets for up to ms when waiting to combine small packets for network efficiency.
In most cases packet immediacy is more desirable than network efficiency. The Nagle algorithm should be disabled by default to eliminate this delay. Resolution: The Nagle algorithm is now disabled by default. If necessary for ethernet efficiency, set the lan. This release resolves several noncritical issues and provides a few enhancements. Compatibility concerns Version 2. When upgrading from firmware versions earlier than version 2. Certain flash drives appear to be more susceptible than others.
When this issue occurs, the SMU remains in the sweeping state and must be aborted. Many USB flash drive models that the instrument could not previously recognize or access are now fully supported. Similarly, the instrument will respond with error code , "USB overcurrent condition," if the installed USB device trips the instrument's over current protection circuit. This release resolves one critical issue that was introduced in version 2. To properly calibrate range R, smuX.
Loading several large scripts or many smaller scripts in this manner will eventually result in an error , "TSP Memory allocation error: not enough memory" or "Out of memory.
When using this configuration, make sure that you connect the SMUs as shown in the connection diagram displayed when using this feature. Also make sure that you follow all safety precautions.
Clicking this button will flashes identification message on the front-panel display of individual SMUs that make up the selected composite SMU. At the same time, a connection diagram displays to help you make or verify the necessary connections. Noncritical fixes PR Models affected: A, A, A, A, A, A Symptom: The virtual front-panel web application inappropriately formats some values when displaying reading buffer data.
For example, the mV range displays as 0. Resolution: When high-C mode is enabled, the last value assigned to the current measure range is retained and then used to restore the current measure range when high-C mode is disabled.
The errors display on the "Instrument Output" field, but they are not visible unless the "Edit" tab is selected. Resolution: Instrument error messages now display on both the "Script Error" dialog box and the "Instrument Output" field.
PR Models affected: A, A, A, A, A, A Symptom: If you send a remote command with more than characters over the LAN socket interface, the instrument attempts to execute the truncated portion of the command message the portion in excess of characters. This may or may not result in the instrument generating an error code , "TSP Syntax error.
SMUB constant is not defined. This constant should be defined with a value of 4. The actual source level is the programmed idle level, but the display indicates the last level active in the sweep before it was aborted. PR Models affected: A, A, A, A, A, A Symptom: When a sweep is aborted by a high-priority output off event under certain conditions, the current or voltage source level is incorrectly changed to match the limit value.
The programmed voltage source value changes to match the voltage limit value. Several new features have been added to the firmware, in addition to correcting outstanding issues.
Statistics for the dedicated reading buffers are now available from the remote interface and the front panel. See the updated user documentation for additional details. PR Models affected: A, A, A, A, A, A Enhancement: A new wrap-around mode allows the reading buffers to restart filling the buffer from the beginning when the buffer becomes full.
This new feature also provides control over the wrap window size. You can set the power compliance limit from a remote interface using the smuX. Alternatively, you can set the power compliance limit by pressing the LIMIT button once to edit the limit, and then pressing it again to toggle between the normal limit value and the power limit. This can be used to allow devices connected to the outer SMU to settle before starting the inner sweeps.
PR Models affected: A, A, A, A, A, A Enhancement: The instrument no longer aborts a running script when the ethernet connection that started the script is lost or closed. Upon loss of connection, the instrument remains in the remote control state RCS , and the client can reconnect to the instrument and resume getting all output messages. NOTE This does not guarantee there will be no data loss.
Any data held in the network layers of the previous connection will be lost. PR Models affected: A, A, A, A, A, A Enhancement: The memory usage display on the front panel now displays the memory available and the total memory in kilobytes, rather than as a hexadecimal number. Previously, the source value was updated only when a new measurement value was available. TSP Express no longer connects the data points with straight lines unless this box is checked. PR Models affected: A, A, A, A, A, A Enhancement: When using the instrument front panel to change ranges, the instrument briefly displays the new range setting.
PR Models affected: A, A, A, A, A, A Enhancement: Attempting to execute a sweep with a fixed source range and with sweep points that exceed the fixed range now generates a more specific error error , "Value too big for range" than the more ambiguous error , "Parameter too big. Previously, the trigger count had no affect on the memory consumption. For example, instead of "Reading node.
PR Models affected: A, A, A, A, A, A Enhancement: The automatic line frequency detection feature has been improved to more reliably detect the power line frequency in noisy environments. In addition, whenever the source function is changed, TSP Express automatically selects the opposite function for measurement.
keithley 2612a service manual
Manual zz. If you decide to upgrade the firmware in your instrument, follow the instructions in the manual. Alternatively, you can arrange to have Keithley Instruments upgrade your firmware at the factory by calling your local Keithley Instruments support office. Upgrade considerations for all Series A models The following table lists the considerations that should be made when deciding whether to upgrade your Series A instrument firmware to version 2. Backward compatibility concerns? Requalification recommended? Should you upgrade?
Keithley 2612 200v Dual SourceMeter
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Keithley SourceMeter 2612 Manuals
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Keithley 2612A Manuals
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