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11A-series plug-in NVRAM replacement: Difference between revisions
11A-series plug-in NVRAM replacement (view source)
Revision as of 11:15, 13 February 2019
, 13 February 2019Replaced the body of this page with John's February 13, 2019 updated instructions.
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(Replaced the body of this page with John's February 13, 2019 updated instructions.) |
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[[11A16]], [[11A32]], [[11A33]], [[11A34]], [[11A52]], [[11A72]] plugin is courtesy of [[John Addis]]. | [[11A16]], [[11A32]], [[11A33]], [[11A34]], [[11A52]], [[11A72]] plugin is courtesy of [[John Addis]]. | ||
== | ==Replacing NVRAM in Tektronix 11000 Series Plug-ins== | ||
A non volatile random access memory (NVRAM) integrated circuit in Tektronix 11000 series plugins | A non volatile random access memory (NVRAM) integrated circuit in Tektronix 11000 series plugins | ||
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a personal computer and either an RS232C cable or GPIB cable connected between them. | a personal computer and either an RS232C cable or GPIB cable connected between them. | ||
== | ==Writing the Serial Number Into NVRAM== | ||
'''IMPORTANT: Both 11400 main frame and plugin jumpers need to be installed to write the serial numbers or the 11A52 high frequency calibration constants into NVRAM. The 11300 series mainframes do not have a “Cal Lock” jumper but still allow the serial number to be written.''' | '''IMPORTANT: Both 11400 main frame and plugin jumpers need to be installed to write the serial numbers or the 11A52 high frequency calibration constants into NVRAM. The 11300 series mainframes do not have a “Cal Lock” jumper but still allow the serial number to be written.''' | ||
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The mainframe will read the new serial number and invoke calibration at the next turn on. | The mainframe will read the new serial number and invoke calibration at the next turn on. | ||
==11A52 | ==11A52 High Frequency Calibration Constants== | ||
The 11A32 and 11A34 use a single pot per channel to manually set the high frequency transient response. | The 11A32 and 11A34 use a single pot per channel to manually set the high frequency transient response. | ||
The 11A71 and 11A72, I think, have all manual transient response adjustments. | The 11A71 and 11A72, I think, have all manual transient response adjustments. | ||
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You do, however, have to set the serial number of the plugin in the NVRAM. See above. | You do, however, have to set the serial number of the plugin in the NVRAM. See above. | ||
== | ==Setting the Twelve 11A52 Calibration Constants== | ||
For optimum transient response in the 11A52, every M377 preamplifier gain setting sensitivity has a different HFAdj associated with it. | For optimum transient response in the 11A52, every M377 preamplifier gain setting sensitivity has a different HFAdj associated with it. | ||
For example, 58 is for CH1 (i.e. input 1) at 50mV/div. 184 is for CH2 at 10mV/div. See the Table below for a full list. | For example, 58 is for CH1 (i.e. input 1) at 50mV/div. 184 is for CH2 at 10mV/div. See the Table below for a full list. | ||
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you must enter all six cal constants for each channel. | you must enter all six cal constants for each channel. | ||
==11A52 | ==11A52 High Frequency Calibration Constant Commands== | ||
{| class="wikitable" | {| class="wikitable" | ||
|+Query examples | |+Query examples | ||
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A setting of +1V will not be uncommon at 1mV/div and 2mV/div. | A setting of +1V will not be uncommon at 1mV/div and 2mV/div. | ||
== | ==Deflection Factors and Associated Address Table== | ||
{| class=wikitable | {| class=wikitable | ||
|Deflection Factor | |Deflection Factor | ||
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All the installed plugin serial numbers and firmware versions should be shown. | All the installed plugin serial numbers and firmware versions should be shown. | ||
== | == Addendum: Programming the 11K Series Plug-ins Remotely== | ||
Knowledge of these commands is not necessary for replacement of the NVRAM or 11A52 high frequency calibration constants. | Knowledge of these commands is not necessary for replacement of the NVRAM or 11A52 high frequency calibration constants. | ||
They are given here as a quick tutorial. | They are given here as a quick tutorial. | ||