lecroy 93XXC-OM-E14 电路图.pdf

? ? 87,/,7,(6 3ULQWLQJ?6WRULQJ?8VLQJ?6SHFLDO?0RGHV 87,/,7,(6Press to access the primary menus for: ? Hardcopy settings ? Time and date settings for the real-time clock ? GPIB and RS-232-C settings ? Mass storage utilities (including copy and format and delete files) ? Special modes of operation (including offset behavior, sequence time-out, cursor units, and auto-calibration) ? Signal function at the CAL BNC connector (magnitude, frequency, shape, trigger out, pass/fail use) +DUGFRS?6HWXS (see page 122) To access secondary menu for viewing, changing printer settings. 7LPH?DWH?6HWXS (page 124) To access secondary menu for adjusting the real-time clock displayed in the upper left-hand corner of the screen. *3,%?56?6HWXS (page 125) To access secondary menu for viewing, changing interface settings. 0DVV?6WRUDJH?8WLOLWLHV (page 1210) For accessing the “Mass Storage UTILITIES” menus. 6SHFLDO?0RGHV (page 1219) For accessing the “Special Modes” menus. when FALSE, transmission stops. It is used for the oscilloscope output hardware handshake. 4DTRData Terminal Ready (from the oscilloscope). Always TRUE. 5SIG GNDSignal Ground Corresponds to a DTE (Data Terminal Equipment) Configuration ? 87,/,7,(6 *3,%?56?When “GPIB/RS232 Setup” is selected from “UTILITIES” these menus appear: 5HPRWH?&RQWURO?IURP For selecting the port for remote control. 56?0RGH To select “7bit” or “8bit” mode for RS-232 communication. When “RS-232” is selected, the GPIB interface is in “Talk Only” mode. Any change becomes effective immediately. 3DULW To select the “odd” or “even” parity, or “none”, for RS-232 communication. 6WRS?ELWV For selecting the number of stop bits for RS-232 communication. %DXG?5DWH To set the Baud Rate for RS-232 communication using the attributed menu knob. *3,%?HYLFH?$GGUHVV? To choose the appropriate GPIB address. ? 0DVV?6WRUDJH?8WLOLWLHV When “Mass Storage Utilities” is selected from “UTILITIES” the “MASS STORAGE” menu group appears (1210) to give access to the mass-storage file system controls. The system supports storage and retrieval of data files to and from memory cards, floppy disks and removable hard disk (HDD) media. 0HPRU?&DUG?)RUPDWThe Memory Card structure, based on the PCMCIA II / JEIDA 4.0 standard, and as found in any DOS floppy or hard disk, consists of a DOS partition containing files. The oscilloscope formats the card in segmented contiguous sectors, each of 512 bytes. The scope does not support error-detection algorithms such as CRCs or checksum inserted between the sectors, and when this is done the instrument may only be able to read, but not write, the card. )ORSS?LVN?)RUPDWThe floppy supports DOS 1.44 MB and 720 kB formats. +DUG?LVN?+?)RUPDWThe removable hard disk structure is based on the PCMCIA III / JEIDA 4.0 standard. The media is arranged as a DOS partition containing files as in any DOS floppy or hard disk. The HDD format uses 512 bytes per sector and four sectors per cluster. One cluster is the minimum file size: any files smaller than 2048 bytes in size will still use one clusters allocation of 2048 bytes of disk space. 6XEGLUHFWRULHVAll files are written to and read from the media from the current working directory. The default name of the working directory is LECROY_1.DIR. This directory is automatically created when the media is formatted. If the media is formatted elsewhere for instance on a PC the directory will be created the first time a file is stored to the memory card, floppy disk or removable hard disk. The working directory can be changed to any valid DOS directory name, using the file-name preferences menu. All working directories are created as sub-directories from the root directory. The maximum number of files allowed in any one directory is 2400. ? 87,/,7,(6 )LOH?QDPLQJ?&RQYHQWLRQVAs in MS-DOS, the file name can take up to eight characters followed by an extension of three characters. A file is treated as: ? Panel setup if its extension is PNL ? Waveform if its extension is a three-digit number ? Waveform template if its extension is TPL ? Hardcopy if its extension is TIF, BMP, or PRT. The instrument has a pre-defined naming convention for the eight-character file names and directory names, and these default names can be customized, as shown in this table. If the new file being stored bears the same name as an existing file on the same storage medium, the old file will be deleted. TypeDefault NameCustomized Name Manually stored waveform filesStt.nnnxxxxxxxx.nnn Automatically stored waveform files Att.nnnxxxxxxxx.nnn Panel filesPnnn.PNLxxxxxnnn.PNL Hard copy files Dnnn.TIF Dnnn.BMP Dnnn.PRT xxxxxnnn.TIF xxxxxnnn.BMP xxxxxnnn.PRT Template filesLECROYvv.TPLCannot be changed Directory nameLECROY_1.DIRxxxxxxxx SpreadsheetSttnnn.TXTxxxxxnnn.TXT MatlabSttnnn.DATxxxxxnnn.DAT MathcadSttnnn.PRNxxxxxnnn.PRN KEY xany legal DOS file-name characterw the template version number: for example, for a version 2.2, the template is saved as LECROY22.TPL tt the trace name of C1, C2, C3, C4, TA, TB, TC, TD TIF BMP hardcopy graphics image files nnn a 3-digit decimal sequence number starting at 001 that is automatically assigned PRThardcopy printer files. ? $XWR?6WRUH?:DYHIRUP )LOH?1DPLQJ The default notation for waveform files is Stt.nnn for manually stored files and Att.nnn for automatically stored files, the characters S and A representing the two storage methods, respectively. When automatically generating a file name, the system uses the assigned name plus a three-digit sequence number. If the assigned waveform name is already in the default Stt form such as SC1, STB the name will be modified to the Att form: AC1, ATB and so on. All other user-assigned names remain as entered. 0RUH?RQ?$XWR?6WRUHG?)LOHV If “Fill” is selected and default names are used, the first waveform stored will be Axx.001, the second Axx.002, and so on, continuing until the storage medium is filled, the file number reaches 999, or there are more than 2400 files in the current working directory. If “Wrap” is selected, the oldest auto-stored waveform files will be deleted whenever the medium becomes full. And the remaining auto-stored waveform files will be renamed the oldest group of files will be named “Axx.001”, the second oldest “Axx.002” and so on. The current sequence number is deduced from inspection of all file names in the working directory, regardless of file type panel, hard copy or waveform. The highest occupied numeric file-name extension of the form nnn is determined, and the next highest number is used as the current generation number for storage operations. HOHWLQJ?)LOHVWhen a file generation is deleted, all files designated with the three- digit sequence number of the file-name extension will be deleted, regardless of file type. 0HGLD?6LH?6WRUDJH $YDLODELOLW The mass-storage file system indicates media size and storage availability in kbytes where 1 kbyte = 1024 bytes. Many media manufacturers specify the available storage in Mbytes where 1 Mbyte = 1 million bytes. This results in an apparent mismatch in specified versus actual media storage availability, when in fact the availability in bytes is identical. :ULWH?3URWHFW?6ZLWFKIf the write-protection switch of the card or floppy being used has been pushed to the active position, the message “Device is Write Protected” will be displayed on the upper part of the grid whenever the medium is accessed for writing. ? 87,/,7,(6 65$0?&DUG?%DWWHU?The SRAM memory card contains a button-size battery for preserving data. When this needs replacing, the message “BAD BATTERY” appears. The battery can and should be changed while the memory card is still in the oscilloscope, in order to prevent loss of information. To access the battery, remove the panel on the bottom edge of the card by removing the small screw. 0$66?6725$*( offers the primary menus for controlling mass storage. The range of “UTILITIES” available depends on the options installed all shown here: 0HPRU?&DUG?8WLOLWLHV?(OPTION) To delete files, format, or copy a machine template onto memory card. (The Utilities menus accessed by selection of this menu for the optional Memory Card are similar to those accessed for Floppy Disk shown on the following pages.) )ORSS?LVN?8WLOLWLHV To delete files, format, or copy a machine template onto floppy disk. The examples on the following pages illustrate this selection. +DUG?LVN?8WLOLWLHV?(OPTION) To delete files, format, or copy a machine template onto hard disk. See page 1214 0DVV?6WRUDJH?3UHIHUHQFHV To set, add or delete it a working directory, or for customizing file names. See page 1215. )LOH?7UDQVIHUV?(If more than one mass-storage device available) For copying files from one storage device to another. See page 1218. ? )/3<?87,/These menus appear when “Floppy Disk UTILITIES” is selected from “MASS STORAGE” and ? a floppy has been newly inserted, or ? there is no floppy in the drive. ?5(?5($?5,9( To read the floppy and display directory contents. ? 87,/,7,(6 )/3<?87,/ Once the floppy has been read, these menus appear, displaying information on the installed storage media: ? Last “format” date and time ? Media size and available free space ? Date, time and size information of the selected file on the media. 7(03/$7(?$1?)250$77,1* To access a secondary menu for formatting storage media or copying to it the machine template. The template is an ASCII text-file containing all information required for decoding the descriptor part of a binary waveform. 2?(/(7( To delete the file selected in the “File” menu (below). )LOH For selecting the file to be deleted with the attributed menu knob or buttons. ? )250$7?)/3<These menus appear when “TEMPLATE AND FORMATTING” is selected from “FLOPPY UTIL”. 3(5)250?)/3<?)250$7 To format the floppy, in DOS format with an interleave factor of two, which optimizes throughput to and from the scope. HQVLW This menu appears only in “FORMAT FLOPPY”. For selecting density “1.44 MB (HD)” or “720 kB (DD)”. &23<?7(03/$7(?72 For copying the machine template an ASCII text-file containing all the information required to decode the descriptor part of a binary waveform to the medium. ? 87,/,7,(6 )250$7?+These menus appear when “MASS STORAGE” “Hard Disk UTILITIES” “TEMPLATE AND FORMATTING” is selected. 48,&.?)250$7 To quickly (15 seconds) clear the portable hard disk drive. )8/?)250$7 For a complete formatting of the HDD recommended if the disk is non-readable. &23<?7(03/$7(?72 For copying the machine template an ASCII text-file containing all the information required to decode the descriptor part of a binary waveform to the medium. ? 35()(5(1&(6These menus appear when “MASS STORAGE” “Mass Storage Preferences” is selected and are for: ? Selecting the working directory ? Deleting a directory ? Accessing the “File Name Preferences” menu ? Accessing the “Add New Directory” menu. RQ?GULYH For selecting the medium. )LOH?1DPH?3UHIHUHQFHV To access the secondary menu for defining custom names for waveform, setup, or hardcopy files (see next page). (/(7(?7+,6?,5(&725< To delete the directory selected in “work with” menu (see below). ZRUN?ZLWK For selecting the directory to be used for file storage and retrieval. $GG?QHZ?LUHFWRU To access secondary menu for adding a new directory. ? 87,/,7,(6 ),/(1$0(?35()This menu group appears when “File Name Preferences” is selected from the preceding menu for defining custom names for waveform, setup, or hardcopy files. WR?EH?VHW?WR? To select the character for modification. 5(6725(?()$8/7?1$0( For restoring the file type selected in the “File Type” menu (see below) to its default name. (17(5?1(:?),/(?1$0( To validate the newly defined name. %$&.63$&( For moving back one space and erasing the previous character. ,16(57 To move forward to create a space for insertion of a character. FKDUDFWHU For selecting a character using the menu knob. )LOH?7SH To select the file type for customizing. ? 1(:?,5(&725< used to define a new directory with a custom name. 1HZ?LUHFWRU?RQ?&DUG? For selecting the character to be modified. 0$.(?7+,6?,5(&725< For validating the new directory. %$&.63$&( To move back one space and erase the previous character. ,16(57 For moving forward to create a space for the insertion of a character. FKDUDFWHU For selecting a character using the menu knob. ? 87,/,7,(6 &23<?),/(6These menus appear when “MASS STORAGE” “File Transfers” is selected, and copies files from one medium to another. LUHFWLRQ?(DEPENDING ON OPTIONS INSTALLED) To select source (copy from) and destination (copy to). :KLFK?ILOHV For selecting the type of file for copying. 2?&23< To execute the copying. ? 6SHFLDO?0RGHV 63(&,$/?02(6When “Special Modes” is selected from “UTILITIES”, the primary and secondary menusdescribed here become available. 7LPHEDVH?7ULJJHU Accesses the secondary menu: ? $872?VHTXHQFH For specifying the time-out in Sequence mode using the associated menu knob to change the value. &KDQQHOV Accesses the secondary menus: 2Q?*$,1?&KDQJHV?DOO?2)6(76?ILHG ? ,Q For specifying the offset behavior of a gain (VOLTS/DIV) change. The offset can be fixed either in “Volts” or vertical “Divisions”. ? $XWRPDWLF?5HFDOLEUDWLRQ For turning the automatic recalibration “ON” or “OFF”. Default is ON. Turning this off may speed up the acquisition, but during that time calibration is not guaranteed. &XUVRUV?0HDVXUH Accesses the secondary menu: ? 5HDG?WLPH?FXUVRU?DPSOLWXGHV For selecting from “In” the time cursor amplitude units in “Volts” or “dBm”. )LUPZDUH?8SGDWH Accesses the secondary menu: ? )/$6+?83$7( Offering the “Update from” and “Update Program” menus (illustrated next page). ? 87,/,7,(6 The full screen warning message shown when “FLASH UPDATE” has been selected. ? &$/?%1&?6HWXS &$/?%1&?287When “CAL BNC Setup” is selected from “UTILITIES”, selection can be made of the type of signal put out at the CAL BNC connector. The frequency, amplitude and pulse shape of the calibration signal can also be chosen. In addition, the CAL BNC connector can be used to provide a pulse: ? as an action for PASS/FAIL testing ? at the occurrence of each accepted trigger event (Trigger Out) ? when the scope is ready to accept a trigger event (Trigger Rdy). When the instrument is switched on, the calibration signal is automatically set to its default state, 1 kHz 1 V square wave. PRGH To change the kind of signal. 6(7?72 To quickly reset the CAL BNC output to its default state. 6KDSH To change the form of the calibration signal. $PSOLWXGH Using the associated knob, for setting the desired high level for all CAL BNC applications. If the BNC output is connected to an input channel with 50 , the amplitude will be halved. )UHTXHQF Using the associated knob, for setting the desired frequency of a CAL signal in the range 500 Hz2 MHz.