Tektronix 372 User Manual
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Tektronix 372 User Manual

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User Manual
372
Semiconductor Workbench
070-8467-00
Please check for change information at the
rear of this manual.
First Printing JULY 1992

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Summary of Contents for Tektronix 372

  • Page 1 User Manual Semiconductor Workbench 070-8467-00 Please check for change information at the rear of this manual. First Printing JULY 1992...
  • Page 2 Instrument Serial Numbers Each instrument manufactured by Tektronix has a serial number on a panel insert or tag, or stamped on the chassis. The first letter in the serial number designates the country of manufacture. The last five digits of the serial number are assigned sequentially and are unique to each instrument.
  • Page 3 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located.
  • Page 5 Basic Menu Operation, and how to mount a device. The Reference section explains several topics in more detail, including how to program the 372 with the help of examples on the floppy disk supplied with the manual. The Appendices list the 372 accessories, its specifications, calibration and diagnostic procedures, and other useful information.
  • Page 6 About this Manual...

  • Page 7: Table Of Contents

    ........372 Based Programming .
  • Page 8 Averaging and Acquisition Parameters ....1 32 Graph Display ........1 32 Source Setup .
  • Page 9 Measure Range, Compliance and R mode (Protective Resistance) ......3 51 372 User Manual...
  • Page 10 Source Output ........3 54 Axis Label .
  • Page 11 3 113 Initializing the 372 ......... . .
  • Page 12 Trace Feature ......... 3 143 Single Step Mode .
  • Page 13 ........A 73 Appendix G: Repackaging For Shipment ..... . A 75 372 User Manual...
  • Page 14 Contents...
  • Page 15 ......Figure 1 3: Connection between the 372 and the Test Fixture .
  • Page 16 Figure 1 38: Settings for IC vs. VCE and Measurement Curves ..1 43 Figure 1 39: GAIN Cursor and Readout ......1 44 Figure 1 40: Settings for ID vs.
  • Page 17 ........3 121 xiii 372 User Manual...

  • Page 18: Figure 1 20: Save Pop Up Menu

    Figure 3 55: DISPLAY Section in the Utility Menu ....3 123 Figure 3 56: ID Information Section of UTILITY Menu ... . . 3 125 Figure 3 57: File System .
  • Page 19 ....3 90 Table 3 35: YGONOGO Cursor Readout ......3 92 372 User Manual...
  • Page 20 Table 3 36: YGONOGO Cursor Move Selection ....3 93 Table 3 37: GAIN Cursor Readout ......3 94 Table 3 38: Soft Buttons for Text Editing .
  • Page 21 ......A 73 Table A 42: Shipping Carton Test Strength ..... . A 75 xvii 372 User Manual...
  • Page 22 xviii Contents...

  • Page 23: Safety

    DANGER indicates a personal injury hazard immediately accessible as one reads the marking. This symbol appears in manuals: Static Sensitive Devices These symbols appear on equipment: DANGER Protective ATTENTION High Voltage ground (earth) Refer to terminal manual 372 User Manual...
  • Page 24 Observe all of these precautions to ensure your personal safety and to prevent damage to either the 372 or equipment connected to it. Power Source The 372 is intended to operate from a power source that will not apply more than 250 V between the supply conductors or between either supply conductor and ground.

  • Page 25: Consignes De Sécurité

    CAUTION identifie les zones de risque présentant un danger potentiel pour l'utilisateur ou le matériel. Borne de masse flottante DANGER Protection à la ATTENTION Haute tension masse (mise à Se reporter la terre) au manuel 372 User Manual...
  • Page 26 Consignes de Sécurité Précautions Alimentation particulières Ce produit est conçu pour fonctionner à partir d'une source d'alimentation n'excédant pas 250 V efficaces entre les conducteurs ou l'un des conduc teurs et la masse. Pour éviter tout risque d'électrocution, il est nécessaire de procéder à...
  • Page 27 à la tension de secteur utilisée. Un mau vais raccordement aura pour effet d'endommager l'appareil. Fusible CAUTION L'utilisation d'un mauvais fusible risque d'endommager l'appareil. Se reporter au tableau pour l'adéquation fusible sélection de tension sec teur. xxiii 372 User Manual...
  • Page 28 Consignes de Sécurité Refroidissement Pour éviter que l'instrument ne soit endommagé par surchauffe de compo sants, vérifier que la circulation d'air interne n'est pas bloqué. Avant la mise sous tension, vérifier que les grilles de ventilation au bas et sur les côtés du boîtier ne sont pas obtureés.
  • Page 29 émise par le DUT. Pour éviter les accidents, attendre le refroidisse ment de l'unité principale et le DUT. CAUTION Pour éviter tout risque de choc électrique, ne pas enlever le dispositif de retenue et/ou le capot de protection.Confier le matériel à du personnel qualifié pour l'entretien. 372 User Manual...
  • Page 30 Consignes de Sécurité xxvi Safety Summary...

  • Page 31: Getting Started

    Getting Started...

  • Page 33: Overview

    Auxiliary Voltage Supply Unit The 372 is provided with two auxiliary supply units in addition to the HPU and LPU. Maximum power output is ±40 V at 100 mA. These units can be used for various purposes such as supplying a bias to the DUT.

  • Page 34: Test Fixture

    Data are acquired and stored in the internal storage memory and displayed on the CRT as characteristic curves. The 372 is also provided with the features for processing of a graph on the CRT: Auto scaling automatically adjusts the graph to the optimum scale,...

  • Page 35: Floppy Disk Drive

    IEEE Std. 488.2 port. Video Printer, Centronics, Plotter and TTL I/O The 372 has a Centronics port and a video printer port on the rear panel for connection to a printer and a video printer, so a hardcopy of the CRT display can be made.
  • Page 36 Overview Getting Started...

  • Page 37: Start Up

    Make sure that the reading of line voltage indication at the rear of the 372 matches the line voltage. If the 372 is connected to the 230V power line while the selector is set to the 115 V, not only will the fuse blow, but the 372 may be damaged.

  • Page 38: Figure 1 2: Optional Power Cords

    Start Up Step 2: Connect the proper power cord (see Figure 1 2) from the rear panel power connector to the power outlet. Reference Standards & Plug Configuration Usage (Max Rating) Option # Certification !ANSI C73.11 @NEMA 5 15 P North America Standard #IEC 83...

  • Page 39: Table 1 1: Ac Voltage Ranges And Fuse

    CAUTION When inserting the Test Fixture Cable Plug into the connector on the rear panel of the 372 or into the connector on the rear panel of the Text Fixture, make sure that the plug is parallel to the connector surface so that the pins will be inserted straight into the connector.

  • Page 40: Figure 1 3: Connection Between The 372 And The Test Fixture

    Test Fixture Rear Panel Triaxial Cables Figure 1 3: Connection between the 372 and the Test Fixture Step 7: Make sure that the FLOATING terminal is connected to the GROUND terminal using the SHORTING BAR on the rear panel (see Figure 1 4).

  • Page 41: Power On

    Step 8: Set the rear panel principal power switch to ON (see Figure1 1). Step 9: Set the front panel ON/STBY switch to ON (see Figure 1 5). Once the 372 is set up, use the ON/STBY switch as the power switch of the instrument.

  • Page 42: Self Test

    Start Up Self Test Step 10: Check the self test results. At power on, the 372 performs a self test. When the test is completed, the startup menu appears on the CRT (see Figure 1 5) and the Floppy Disk, front panel indicators, and buttons show their default state.

  • Page 43: Tutorial

    Introduction This section provides exercises designed to acquaint you with the features and operation of the 372. Four exercises are described below, but it is not necessary to perform all of them. When the fundamental operation methods are understood, you can try various operations on your own.

  • Page 44: Example 1 - The Measurement Process

    Tutorial - The Measurement Process Example 1 - This example explains the operation of the instrument using a common source N channel FET. A simplified circuit for measurement and characteris The Measurement tic curves are shown in Figure 1 7. Process Voltage Voltage...

  • Page 45: Mounting A Dut

    The following steps describe how to connect the supplied FET (2N4392) to the test fixture via an A1102 TO 952/TO 73P2 test adapter. Step 2: Attach an A1102 TO 5/TO 3P test adapter to the test fixture (see Figure 1 9), as follows: 1 13 372 User Manual...

  • Page 46: Figure 1 9: Mounting Of A Fet

    Tutorial - The Measurement Process 2N4392 Fastener Fastener TO 5/TO 3P Test Adapter Figure 1 9: Mounting of a FET Pull the fasteners located on the right and left sides of the test adapter. Open the protective cover of the test fixture and place the test adapter in the proper position on the patch panel.

  • Page 47: Setups

    Step 5: Close the protective cover. When the part has been mounted, close the protective cover of the test fixture. The 372 is equipped with a safety interlock system so that a mea surement cannot be made unless the test fixture cover is closed.

  • Page 48: Averaging And Acquisition Parameters

    Tutorial - The Measurement Process CATALOG Soft Button Test Item Selection Box Device Type Selection Box Figure 1 10: Catalog Setup Menu Averaging and Acquisition Parameters Operation Mode Setup Section AVERAGE Selector HOLD TIME DELAY TIME Selector Selector Figure 1 11: Operation Mode Setup 1 16 Getting Started...
  • Page 49 Touch the [0] soft key and then touch the [ENTER] soft button to set the delay time to 0. Touching the [ENTER] soft button also causes the pop up menu to disappear. As was shown above, set the hold time to 0 by touching the [HOLD TIME] selector. 1 17 372 User Manual...

  • Page 50: Source Setup

    Tutorial - The Measurement Process Source Setup Output Parameters for Drain Voltage Sweeps Source Setup Section Output Parameters for Gate Voltage Steps Figure 1 12: Source Setup In this configuration, the HPU works as a power source unit which supplies sweep voltage to the drain of the FET, and the LPU works as a step genera tor which supplies stepped voltage to the gate of the FET.

  • Page 51: Table 1 3: Parameters In Source Setup

    In this example, the setup values shown in Table 1 3 are used. First compare the setup values displayed in the selector (see Figure 1 12) with the values shown in Table 1 3. If they are different, modify the value(s) as follows: 1 19 372 User Manual...

  • Page 52: Figure 1 13: Change The Stop Value Of The Hpu

    Tutorial - The Measurement Process Touch a selector to display its corresponding pop up menu. When a numeric keypad pop up menu appears, touch the appropri ate soft keys to enter the value and touch the [ENTER] soft button. Example: To input 0.25 V to the [INCREMENT] selector of the LPU, touch the following keys in order: [0][.][2][5] It is not necessary to input the unit value.

  • Page 53: Measurement And Auto Scaling

    MEASURE menu. When measurement is completed, the SINGLE indicator goes out (see Figure 1 15). Step 12: Touch the [AUTO SCALE] soft button to adjust the graph to the optimum scale (see Figure 1 15). 1 21 372 User Manual...

  • Page 54: Measurement Using The Cursors

    Tutorial - The Measurement Process SINGLE Button AUTO SCALE Soft Button Figure 1 15: [AUTO SCALE] Soft Button and [SINGLE] Button Measurement Using the Cursors can be obtained directly from the slope of the ID vs. VDS curves. Below are procedures to obtain R near 0.0 V of drain voltage at 0.0 V of gate voltage.

  • Page 55: Figure 1 16: Application Selection Box, [Cursor Type] Selector, Cursor Type Pop Up Menu

    SLOPE cursor is placed at 0.0 V on the X axis. If the settings other than the default values are currently set, skip to step 15. Touch the [MOVE] selector to display the MOVE pop up menu. 1 23 372 User Manual...

  • Page 56: Figure 1 17: Position Of Point 1 Of The Slope Cursor

    Tutorial - The Measurement Process Touch the [POS 1 W/ DATA1] box to move the point 1 of the SLOPE cursor along the curve. Touch the graph where the X axis component is 0.0 V on the first curve to position the cursor as close to the target point as possible. Verify that the [NEXT] box is selected in the Knob Assignment selection box.

  • Page 57: Figure 1 18: Position Of Point 2 Of The Slope Cursor

    Step 19: Touch the [SETUP] box in the TYPE selection box to select the data type to be saved. The file extension is automatically set to .SET. When you press the [SAVE] button while the SETUP menu is being displayed, the [SETUP] box is the default selection. 1 25 372 User Manual...

  • Page 58: Figure 1 19: Floppy Disk Drive

    Tutorial - The Measurement Process Step 20: Specify the file base name as follows: Touch the [NAME] selector to display a character keypad pop up menu (See Figure 1 21). In the pop up menu, touch the soft keys [I][D][_][V][D][S] in order, followed by touching the [ENTER] soft button to enter the file base name ID_VDS to the [NAME] selector.

  • Page 59: Figure 1 21: Character Keypad Pop Up Menu

    Tutorial - The Measurement Process SAVE Pop up Menu SAVE Button TYPE Selection Box NAME Selector EXECUTE Soft Button Figure 1 20: SAVE Pop up Menu Figure 1 21: Character Keypad Pop up Menu 1 27 372 User Manual...

  • Page 60: Example 2 - Other Ways To Setup

    Tutorial - Other ways to Setup Example 2 - This example explains how to set up the 372 to measure a characteristic curve without the catalog setup feature, using a N channel FET (as in Exam Other ways to Setup ple 1), and how to recall the settings from a floppy disk file.

  • Page 61: Connection And Source Mode

    Step 2: Connect HPU, LPU and GNDU to the CH1, CH2 and CH3 as follows: Touch the [CONNECTION] selector to display the Connection pop up menu (see Figure 1 25). Touch the [CH1 HPU, CH2 LPU, CH3 GNDU] box. 1 29 372 User Manual...

  • Page 62: Measurement Mode

    Tutorial - Other ways to Setup CH1 HPU, CH2 LPU, CH3 GNDU Figure 1 25: Connection Pop up Menu Step 3: Set the source mode of the HPU to V" mode, and source mode of the LPU to V" mode (see Figure 1 24) as follows: Touch the [SOURCE MODE] selector on the CH1 side to display the Source Mode pop up menu.

  • Page 63: Sweep Mode

    MEASURE MODE Selector Figure 1 26: Operation Mode Setup Step 4: Set the 372 to sweep measurement mode (see Figure 1 26). Sweep measurement mode is selected by default. If it is not selected, proceed as follows: Touch the [MEASURE MODE] selector to display the MEASURE MODE pop up menu.

  • Page 64: Averaging And Acquisition Parameters

    Tutorial - Other ways to Setup Touch [SWEEP MODE] on the LPU, then touch [STPGEN]. Averaging and Acquisition Parameters Step 6: Select an average mode if necessary and set the acquisition re lated parameters by completing steps 7 and 8 of Example 1. Graph Display The data acquired and displayed for X and Y axes is set in the Graph Dis play Setup section.

  • Page 65: Source Setup

    Touch the soft keys [V][D][S], and touch the [ENTER] soft button. Touch the [Y LABEL] selector to display the character keypad pop up menu. Touch the soft keys [I][D], and touch the [ENTER] soft button. 1 33 372 User Manual...

  • Page 66: Recalling Settings

    (see Figure 1 15). Recalling Settings Settings saved on a floppy disk can be loaded to set the 372 to the state it was when the settings were saved. If needed, you can modify the settings to apply them to another measurement.

  • Page 67: Figure 1 29: Disk Menu And File/Dir List

    Wait until the LED indicator goes out before removing the floppy disk. Step 7: Press the [SINGLE] button on the front panel to start measure ment. After measurement is completed, touch the [AUTO SCALE] soft button if necessary (see Figure 1 15). 1 35 372 User Manual...
  • Page 68 Tutorial - Other ways to Setup LOAD Button File Selection Box Setup File Currently Selected for Loading General Purpose Knob Figure 1 30: LOAD Pop up Menu Recall of the settings is now complete. 1 36 Getting Started...

  • Page 69: Example 3 - Measurements Using The Cursor

    SLOPE, GAIN and DOT cursors. For examples of using XGONOGO and the Cursor YGONOGO cursors, refer to Example 3 in Programming Examples of 372 Based Programming. Slope of the base current from IC&IB vs. VBE curve of a BJT. Gain of a BJT, calculated from its IC vs. VCE curves.

  • Page 70: Figure 1 32: Mounting A Diode

    Tutorial - Measurements Using the Cursor Anode Cathode Figure 1 32: Mounting a DIODE Before proceeding, confirm the following: 4. The MEASURE menu is displayed on the CRT. If not, touch the [MEA SURE] box in the major menu selection box (see Figure 1 33). 5.

  • Page 71: Bjt

    Touch the [CURSOR] box in the application selection box to activate the cursor feature. Touch the [CURSOR TYPE] selector to display the Cursor Type pop up menu. Touch the [SLOPE] box in the pop up menu to display the SLOPE cursor. 1 39 372 User Manual...

  • Page 72: Figure 1 35: Application Menu, Cursor Type Pop Up Menu

    Tutorial - Measurements Using the Cursor Cursor Type Pop up Menu Application Selection Box CURSOR TYPE Selector Figure 1 35: Application menu, Cursor Type pop up menu Step 2: Position point1 of the SLOPE cursor (see Figure 1 36). Touch the [MOVE] selector to display the MOVE pop up menu. Touch the [POS1 W/ DATA2] box to move point1 of the SLOPE cursor along the curve.

  • Page 73: Figure 1 36: Positioning Point 1 Of The Slope Cursor

    Turn the knob to adjust the position of cursor point 2 with respect to the X axis. Step 4: Read out the results. In Figure 1 37, 16.309 dec/V is displayed for GRAD=. Therefore, the slope of the base current is 16.309 dec/V. 1 41 372 User Manual...

  • Page 74: Figure 1 37: Point 2 Of The Slope Cursor And Readout

    Tutorial - Measurements Using the Cursor Point 2 MOVE Selector GRAD= Readout Figure 1 37: Point 2 of the SLOPE Cursor and Readout Measuring hFE Figure 1 38 shows the settings for the IC vs. VCE characteristic of a BJT (2N3904) and its measured curves.
  • Page 75 4 of Measuring Slope of the Base Current. Step 4: Read out the results. In Figure 1 39, 155.0 is displayed for GAIN=. So the hFE at 630.00 mV is 155.0. 1 43 372 User Manual...

  • Page 76: Fet

    Tutorial - Measurements Using the Cursor Readout Figure 1 39: GAIN Cursor and Readout Measuring Transconductance gm Figure 1 40 shows the settings for ID vs. VGS of a FET (2N4392)and its curves. The small signal transconductance gm (delta ID/delta VGS) can be obtained from the slope of these curves.
  • Page 77 Step 3: Position point 2 of the SLOPE cursor, as moving it along the curve. Step 4: Read out the results. In Figure 1 41, 15.000 mS is displayed for GRAD=. Therefore, the small signal transconductance at a VGS greater than -0.5 V is 15.000 mS. 1 45 372 User Manual...

  • Page 78: Diode

    Tutorial - Measurements Using the Cursor Figure 1 41: SLOPE Cursor and Readout DIODE Measuring Current at Specified Voltage Figure 1 42 shows the example of the setups and measured curves of IF vs. VF characteristic of a DIODE (RD9.1E). From these curves, absolute current is obtained at specified voltage using DOT cursor.
  • Page 79 4 of Measuring Slope of the Base Current of a BJT. Step 4: Read out the results. In Figure 1 43, 7.3050 mA is displayed for Y=. Therefore, the current at 800.000 mV is 7.3050 mA. 1 47 372 User Manual...
  • Page 80 Tutorial - Measurements Using the Cursor Figure 1 43: DOT Cursor and Readout 1 48 Getting Started...

  • Page 81: Example 4 - Time Domain Measurement

    100 S Sampling Interval 100 mS Figure 1 44: Simplified Measurement Circuit and Gate Voltage Variation Instructions on how to power up and initialize the 372, and how to mount a DUT are given in Example 1. Setting Up Configuration The circuit shown in Figure 1 44 is almost the same as the circuit for the ID vs.
  • Page 82 AVERAGE Selector HOLD TIME Selector Figure 1 46: Operation Mode Setup Step 2: Set the 372 to time domain measurement mode as follows: Touch the [MEASURE MODE] selector to display the Measure Mode pop up menu (see Figure 1 46).
  • Page 83 Scroll mode can be chosen on the X axis. Y DATA Selector Y SCALE Selector SCROLL MODE Selector Figure 1 47: Graph Display Setup Step 4: Set the data and scale of the Y axis as follows: 1 51 372 User Manual...

  • Page 84: Table 1 4: Example Of Time Domain Measurement Setup

    Tutorial Time Domain Measurement Touch the [Y DATA] selector to display the Y DATA pop up menu. Touch the [HPUI] box to select the drain current to be measured for the Y axis. Touch the [Y SCALE] selector to display the Y SCALE pop up menu. Touch the [LIN] box to set the Y axis to linear scale.

  • Page 85: Table 1 5: X And Y Axis Scale Settings

    (see Figure 1 49), set the scale of the X and Y axis with the values shown in Table 1 5. Table 1 5: X and Y Axis Scale Settings Selectors Settings Y TOP 30.0 mA Y BOTTOM 0.0 mA X LEFT 0.0 s Y RIGHT 400.0 s 1 53 372 User Manual...

  • Page 86: Measurement

    Tutorial Time Domain Measurement Y TOP Selector Y LABEL Selector Y BOTTOM Selector X RIGHT Selector X LEFT Selector Figure 1 49: Graph for Time Domain Measurement Measurement Step 10: Press the [SINGLE] button on the front panel to initiate the measurement.
  • Page 87 Tutorial Time Domain Measurement SINGLE Button Figure 1 50: Measurement Example 1 55 372 User Manual...

  • Page 88: About The Sample Disk

    Tutorial About the Sample Disk About the Sample The following setup and program files are on the sample disk, in these directories: FET, BJT and DIO according to the files for supplied FET Disk (2N4392), BJT (2N3904) or ZENER DIODE (RD9.1E). ID_VDS.SET - Setup file for ID vs.

  • Page 89: Dio

    1 through 4. To load a program file and control program execution, refer to Programming Examples in 372 Based Programming. Before executing a program, the device must be mounted on the test fixture and the patch panel wired with patch cords.
  • Page 90 Tutorial About the Sample Disk 1 58 Getting Started...

  • Page 91: Operating Basics

    Operating Basics...

  • Page 93: Basic Menu Operation

    Basic Menu Operation The 372 has a touch panel and is menu driven. Five major menus are selec tively displayed on the CRT. The 372 is controlled by operating the touch panel according to the displayed menu. Touch Area One or more boxes, selectors, soft buttons, and soft keys are displayed for each menu and sub menus.

  • Page 94: Selectors

    Basic Menu Operation Selectors Selectors are non framed areas with a light green background. A selector is a setup item. Set values can be entered or selected via a pop up menu which appears when you touch the selector, or by using the general pur pose knob on the front panel.

  • Page 95: Other Areas

    If a box is not highlighted it cannot be selected. After the selection, the choice you have made is displayed. Selection Box Pop up Menu Figure 2 3: Selection Box Type Pop up Menu 372 User Manual...
  • Page 96 Basic Menu Operation Character Keypad Pop up Menu The left side of Figure 2 4 shows an example of this pop up menu which consists of a display field, keypad, and soft buttons. Display Field - The input figures are displayed. When the pop up menu appears, a value set for the corresponding selector is displayed as default.

  • Page 97: Selector Operation

    Step 1: Touch the selector to set the selector to knob entry mode. The selection box pop up menu appears, the selector is highlighted and the knob icon appears indicating that the selector is in knob entry mode (see Figure 2 5). 372 User Manual...

  • Page 98: Entry Of Text

    Basic Menu Operation Step 2: Turn the general purpose knob in either direction to select the item box. When you turn the knob, the pop up menu disappears but the knob entry mode of the selector remains in effect. (Touching the [ENTER] or [ESCAPE] soft button on the pop up menu does the same thing.) The knob entry mode stays in effect until the next action (touching the CRT) is taken.

  • Page 99: Moving Objects

    MEASURE menu by either by touching a new place on the graph or by turning the general purpose knob clockwise or counterclockwise. Combin ing these methods is convenient to position the object exactly. Coarse Movement Step 1: Touch a place on the graph close to the desired position. 372 User Manual...
  • Page 100 Basic Menu Operation Fine Movement When you are moving objects, the knob assignment selection box com posed of the [HORIZ] box and [VERT] box as shown in Figure 2 6 is dis played together with the knob icon. Touch the [HORIZ] box in this selection box to assign horizontal movement to the general purpose knob, touching the [VERT] box to assign vertical movement.

  • Page 101: Scrolling

    Scroll with Soft Button - Touch the [PAGE FORWARD] soft button for forward scrolling and the [PAGE BACKWARD] soft button for backward scrolling. In this case, one page is scrolled for every tume you touch the Page soft button. Figure 2 7: Scroll Operation 372 User Manual...

  • Page 102: Button/Soft Button Operation

    Basic Menu Operation Button/Soft Button Operation A function is assigned for every button on the front panel or soft button on the menu. There are two types of button/soft buttons. Immediate Execution Type Button/Soft Button Step 1: Touch the button on the front panel or the soft button on the menu to execute the function.

  • Page 103: Mounting The Device Under Test

    Mounting the Device Under Test WARNING Connecting the Device Under Test (DUT) directly to the 372 without using the Text Fixture can be dangerous. To avoid electrical shock and personal injury, always use the Text Fixture and Test Adapters. If a DUT does not fit in the Test Adapter or in the Test Fixture, an external test fixture may be required.

  • Page 104: Mounting The Dut And Wiring

    Mounting the Device Under Test Open the protective cover of the test fixture and place the test adapter in the proper position on the test panel. Push back the fasteners on the right and left sides of the test adapter. To remove the Test Adapter: Pull the fasteners located on the right and left sides of the test adapter.

  • Page 105: Basic Patch Wiring Examples

    Drain Gate Source Collector Base Emitter DIODE Anode Cathode Samples of basic connections between the DUT and the patch panel are given in Figure 2 10 to 2 13. Figure 2 10: BJT Connection Example 2 13 372 User Manual...
  • Page 106 Mounting the Device Under Test Figure 2 10 shows an example of connections between a BJT and the test panel. Connect CH1, CH2 and CH3 to collector, base, and emitter, respec tively. G D S Figure 2 11: FET Connection Example Figure 2 11 shows an example of connections between an FET and the test panel.
  • Page 107 For information on how to use the PLATE terminal of the Test Adapter and GUARD terminal on the patch panel, refer to DUT Connection and Kelvin Sense in Setups and Measurement of the Reference section. 2 15 372 User Manual...
  • Page 108 Mounting the Device Under Test 2 16 Operating Basics...

  • Page 109: Before And After Floating Measurement

    To avoid electrical shock, do not touch the floating terminal while the shorting bar is being removed. Step 2: After the floating measurement is performed, be sure to connect the floating terminal to the protective ground. Shorting Figure 2 14: Removing the Shorting Bar 2 17 372 User Manual...
  • Page 110 Before and After Floating Measurement 2 18 Operating Basics...

  • Page 111: Reference

    Reference...

  • Page 113: At A Glance

    At a Glance This section contains 372 front and rear panel, the test fixture, and major and principal menus. The 372 Front Panel shows the location and purposes of the various but tons, indicators and knobs on the front panel.

  • Page 114: Front Panel

    At a Glance Front Panel CRT with Touch Panel System, CRT Brightness Setup, page 3 123 Floppy Disk Drive, page 3 127. ON/STBY Switch LED indicator lights when the drive is active. Reference...

  • Page 115: Front Panel Controls

    CRT display data PROGRAM Indicator lights is being transferred. while a program is running, and blinks when paused. LOCAL returns the 372 to the local control mode. Refer to Programmer Manual. STOP terminates the measurement, page 3 66.

  • Page 116: Rear Panel

    At a Glance Rear Panel SENSE and FORCE Connectors provide SENSE and FORCE lines connected to the Test Fixture, page 3 22. This connector is reserved for future use. Test Fixture Connector provides connection to Test Fixture. Connector pinout and signal definitions, page A 73.
  • Page 117 CRT hardcopy, page 3 111. Line Voltage Selector sets GPIB Connector the voltage range to Remote Control, refer to match the electrical Programmer Manual. CRT system, page 1 7. hardcopy to HPGL plotter, page 3 169. 372 User Manual...

  • Page 118: Test Fixture With Test Adapters

    At a Glance Test Fixture with Test Adapters (Optional Accessory) Test Adapter, page 2 11 DUT Standard Connection Label Patch Panel Protective Cover, Test Adapter page 2 12 placed in Patch Panel Reference...

  • Page 119: Rear Panel Of The Test Fixture

    DUT. Signals up to 40 Vpk and 200 mA can be provides connection to the EXT connector with an interlock. supplied to this connector. instrument, page A 73. SENSE and FORCE Connectors provide connections to SENSE and FORCE lines of the instrument, page 3 22. 372 User Manual...

  • Page 120: Patch Panel

    At a Glance Patch Panel OUTPUT provides FORCE, SENSE and GUARD to each channel. EXT provides These terminals are connected to external signals. These appropriate channel connectors on terminals are connected the instrument via triaxial cables. to the HIGH EXT For GUARD, SENSE and FORCE CHASSIS provides protective ground.

  • Page 121: Test Adapters

    20 pin ICs. No kelvin sense mechanism is provided. INSULATION BOARD Test Adapter (optional accessory) for DUTs that cannot be measured with other adapters and for DUTs that require a high level of insulation for high resistance measurements. 372 User Manual...

  • Page 122: Main Menu

    At a Glance Main Menu Major Menu Selection Box. A highlighted box indicates the menu currently selected and displayed in Major Menu Display Zone. When the power switch is initially turned ON, the CONFIG box is selected. CONFIG displays the CONFIG menu. MEASURE displays the MEASURE menu.

  • Page 123: Config Menu (Sweep Measurement Mode)

    MATH icon, page 3 75. Averaging Mode, page 3 49. Miniature graph displays same contents as that of graph in MEASURE menu. Touching miniature graph displays the MEASURE menu. Source Setup Section, page 3 51. 3 11 372 User Manual...

  • Page 124: (Time Domain Measurement Mode)

    At a Glance CONFIG Menu (Time Domain Measurement Mode) Graph Display Setup Section, page 3 47. Operation Mode Setup Section. Auto scaling, page 3 70. Measurement Mode, page 3 43. Switching Graph Display, Acquisition Parameters, and page 3 79. Averaging Mode, page 3 49. Source Setup Section, page 3 51.

  • Page 125: Catalog Setup Menu

    3 39. Test Item Selection Box selects the parameter to be measured depending on the selection of device type. This selection, together with the selection in Device Selection Box, determines configuration, page 3 39. 3 13 372 User Manual...

  • Page 126: Measure Menu

    At a Glance Measure Menu TIME STAMP Display Field displays date and time, page 3 121. Graph Display Section, page 3 79. Auto scaling, page 3 69. Switching Graph Display, page 3 79. MATH icon, page 3 75. Zoom, page 3-95. Application Selection Box SETUP provides setup feature, page 3 67.

  • Page 127: Utility Menu

    3 111. DIAGNOSTICS provides self IEEE 488.2 sets GPIB test, page A 31. parameters. For hardcopy, page 3 111. For remote control, refer to Programmer Manual. INITIALIZE restores default states with some exceptions, page 3 117. 3 15 372 User Manual...

  • Page 128: Prog Menu (Program Trace Menu)

    At a Glance PROG Menu (Program Trace Menu) Trace Mode Selection Box selects single step trace mode or continuous trace mode, page 3 151. Page Soft Buttons, Program trace page 3 152. list display area. 3 16 Reference...

  • Page 129: Prog Menu (Program Editing Menu)

    CLEAR LINES clears all program editing menu program lines, page or program trace menu. 3 149. Page Soft Buttons and LINE Selector control the program display area, page 3 146. INSTRUCTION Selectors define program statements, page 3 146. 3 17 372 User Manual...

  • Page 130: Disk Menu

    At a Glance Disk Menu Information section shows USED SIZE and FREE SIZE of the disk, and also shows number of files in the current working directory. SAVE and LOAD, page 3 107. MAKE DIR Soft Button, page 3 136. CHANGE DIR Soft Button, page 3 136.

  • Page 131: Measurement System

    Measurement System Measurement Circuit The measurement circuit of the 372 consists of: HPU (High Power Unit), LPU (Low Power Unit), GNDU (Ground Unit), AUX 1 (Auxiliary 1), and AUX 2 (Auxiliary 2), and Matrix Switch for connecting HPU, LPU and GNDU to a DUT.

  • Page 132: Hpu/Lpu

    Measurement System HPU/LPU Figure 3 2 shows a simplified circuit of the HPU and LPU. They are de scribed below: The IV amplifier supplies a measurement voltage and a measurement cur rent to the DUT. When the output current (Io) is less than the current setting the IV amplifier works as a regulated voltage source.

  • Page 133: Gndu

    Matrix Switch The Matrix Switch connects the HPU, LPU and GNDU to the three channels of the DUT. The 372 has a catalog setup feature which automatically config ures the appropriate DUT type and test item. For details, refer to Configura tion in Setups.

  • Page 134: Test Fixture

    DUT Connection and Kelvin Sense The DUT is mounted to the 372 via the test adapter and the Test Fixture. The circuit of the Test Fixture and the test adapter (A1101 TO 92/TO 72) are shown in the Figure 3 4.
  • Page 135 HOOK UP LID SIGNAL AUX 1 AUX 2 CHASSIS D SUB 25 Pin Test Fixture Circuit FORCE/SENSE FORCE/SENSE TO 92 TO 92 PLATE Test Adapter Circuit Figure 3 4: Test Fixture and Test Adapter Circuit 3 23 372 User Manual...

  • Page 136: Measurement Modes And Acquisition

    Acquisition Sweep Measurement Mode The 372 does not only provide constant voltage and current to the DUT, but it also allows the HPU and LPU to operate in sweep measurement mode. For convenience, the HPU and LPU have a master/slave relationship when in sweep measurement mode.
  • Page 137 Output Value of Slave Source = Output Value of Slave Source = Output Value of Master Source + Offset Output Value of Master Source x Ratio Figure 3 6: Relationship between Master and Slave Source in Sync Mode 3 25 372 User Manual...
  • Page 138 Measurement System MASTER:SWEEP_LIN Increment Value Stop Value Start Value Hold Time Delay Time Delay Time SLAVE:STEPGEN Stop Value Start Value Time Sweep Increment Sweep Start Value Figure 3 7: Sweep Relationship between Master and Slave Source (Stepgen Mode) The master source can generate linear sweep and logarithmic sweep. Sweep output is as follows: Start - The start voltage or current at which the step begins.

  • Page 139: Time Domain Measurement Mode

    DUT (see Figure 3 7). Time Domain Measurement Mode The 372 also performs time domain measurements that measure voltage or current changes vs. time. A constant voltage and current can be applied to the DUT, or they can be changed after a specified length of time. You must...

  • Page 140: Pulse Mode

    Measurement System 512 - Each point is measured 512 times with the average taken as the final value. Pulse Mode In pulse mode, the pulsed rather than continuous current or voltage can be applied to the specified channel of the DUT to prevent the DUT from over heating.
  • Page 141 Slave ! STEPGEN Mode: Slave ! CONST Mode: Master ! SWEEP_LIN Pulse Slave ! SYNC TO MASTER Mode: Master ! CONST Pulse Slave ! CONST Mode: Figure 3 10: Turning Pulse Mode On and Off 3 29 372 User Manual...

  • Page 142: Measurement Data And Graph Display

    Measurement System Measurement Data and Graph Display Measurement results are stored in memory and immediately displayed on the graph in the MEASURE menu and on the miniature graph in the CON FIG menu. Only data that have assigned X and Y axis components can be measured and stored into storage memory.
  • Page 143 SLOPE cursor - reads out the slope of a line between two specified points. The intersection of two SLOPE cursor lines, and the X and Y values at the intersection of two SLOPE cursor lines can also be read out. 3 31 372 User Manual...

  • Page 144: Range And Resolution

    For example, when setting the current, if start, stop and increment are set to 0.0 pA, 44.925pA and 0.025pA, respectively, the 100 pA range is satisfied. However, when the values are 50.0 pA, 144.925pA and 0.025pA, the 372 automatically switches to the 1 nA range for the values 50.0pA, 144.75 pA and 0.25 pA.

  • Page 145: Table 3 1: Voltage Range And Resolution Of The Lpu

    Table 3 4: Current Range and Resolution of the HPU I Range Current Range Resolution 100 pA -100.00 pA to 0.000 pA to 100.00 pA 0.025 pA 1 nA -1.0000 nA to 0.00 pA to 1.0000 nA 0.25 pA 3 33 372 User Manual...

  • Page 146: Table 3 5: Divided Values Per 1 Decade (10)

    Measurement System Table 3 4: Current Range and Resolution of the HPU (Cont.) I Range Current Range Resolution 10 nA -10.000 nA to 0.0000 nA to 10.000 nA 0.0025 nA 100 nA -100.00 nA to 0.000 nA to 100.00 nA 0.025 nA 1 mA -1.0000 mA to 0.00 nA to 1.0000 mA...

  • Page 147: Table 3 8: Operating Range In Logarithmic Sweep Mode

    0.01 s 1.00 s to 9.99 s 0.1 s 10.0 s to 99.9 s 100 s to 600 s Compliance The outputs from the SMUs are limited to the range shown in Figure 3 12. 3 35 372 User Manual...
  • Page 148 Measurement System +400 mA +100 mA +100 mA +20 mA +40 mA -100 V -10 V +10 V +100 V -10 V +10 V -40 mA -20 mA -200 V +200 V -100 V +100 V 100 mA -100 mA -400 mA Voltage/Current Output Specification Voltage/Current Output Specification...

  • Page 149: Setups

    Dynamic changes in Measurement in this Section. Settings in the CONFIG menu can be stored on a floppy disk for future use. Refer to Saving and Loading Settings, Curves and Programs in this section. 3 37 372 User Manual...

  • Page 150: Configuration

    Setups Configuration Catalog Setup The catalog setup feature provides a simple way to set up for specified measurements. If this feature is used, the configuration can be performed instead of all manual setup procedures described in Manual Setup in this section.

  • Page 151: Table 3 10: Device Type Selection

    FET_P with drain shorted to source FET_N FET_P ID vs. VGS Drain current and gate to source voltage GM vs. VGS Small signal transconductance (ΔID/ΔVGS) and gate to source voltage GM vs. ID Small signal transconductance (ΔID/ΔVGS) and drain current 3 39 372 User Manual...
  • Page 152 Setups Table 3 11: Test Item Selection (Cont.) DUT Type Test Item Descriptions IC vs. VCE Collector current and collector to emitter voltage ICBO vs. VCBO Collector to base current leakage and volt age breakdown, with emitter open ICEO vs. VCEO Collector to emitter current leakage and voltage break down, with base open IEBO vs.

  • Page 153: Operation

    For default configuration and settings, refer to Appendix D. Manual Setup Step 1 through step 9 describe the manual configuration both for sweep measurement mode and time domain measurement mode. 3 41 372 User Manual...
  • Page 154 Setups Connection and Source Mode SOURCE MODE Selectors CONNECTION Selector Figure 3 14: Connection Setup Step 1: Connect the SMU(s) and the channels which lead to a DUT. When the [CONNECTION] selector is touched, the Connection pop up menu comes up, which displays connection patterns (see Figures 3 14 and 3 15).
  • Page 155 Time Domain Measurement Mode Figure 3 16: Operation Mode Setup Step 3: Set the 372 to sweep measurement mode or time domain measurement mode (see Figure 3 16) with the [MEASURE MODE] selector in the Operation Mode setup section. In sweep measurement mode, the sweeping method can also be selected as shown in Table 3 12.

  • Page 156: Sweep Mode

    Setups Table 3 12: Measurement Mode Selection Choices Descriptions ONE WAY SWEEP Sweep measurement mode is set. Each sweep is made one way ROUND SWEEP Sweep measurement mode is set. A sweep is made in each direction. TIME DOMAIN Time domain measurement mode is set. Display in the Operation Mode Setup section depends on the setup of the selected measurement mode, so the setup for either measurement mode can easily be made.

  • Page 157: Table 3 14: Master Sweep Mode Selection

    The ratio can be selected from pre de termined values in the Ratio pop up menu driven by the [RATIO] selec tor (see Figure 3 17). Slave source output value = ratio x master source output value. 3 45 372 User Manual...
  • Page 158 Setups Figure 3 17: Ratio Pop up Menu Offset - The [OFFSET] selector appears when the [SWEEP_LIN] box is selected in step 6. When the slave source is synchronized to the master source which is operated in the linear sweep mode, the output value of the slave source is given as the master source output value added to the offset.

  • Page 159: Measurement Data And Graph Display

    HPU current value LPUV LPU voltage value Y Axis Y Axis LPUI LPU current value HPUV & LPUV HPU voltage value and LPU voltage value HPUI & LPUI HPU current value and LPU current value 3 47 372 User Manual...
  • Page 160 Setups If only one SMU is needed, HPU is always used. In this case, LPUV and LPUI cannot be selected for the X axis, nor are LPUV, LPUI, HPUV & LPUV or HPUI & LPUV for the Y axis selectable. If the time domain measurement mode is selected in step 3, time is as signed to the X axis.

  • Page 161: Averaging And Acquisition Parameters

    Step 10: Select an averaging mode, if necessary (see Figure 3 19). The Averaging feature can be used to minimize random fluctuations in the measurement results. In the 372, averaging modes are shown in Table 3 17. With the [AVERAGE] selector, an averaging mode can be selected in both sweep measurement mode and in time domain measurement mode.

  • Page 162: Table 3 18: Sampling Interval Range

    Setups NOTE When pulse mode is turned on, the [DELAY TIME] selector disap pears. Refer to Pulse Mode in this section. Sweep Measurement Mode - Delay time and hold time can be set with the [DELAY TIME] and [HOLD TIME] selectors, respectively. Delay time delays the measurement point for each sweep step.

  • Page 163: Source Setup

    Resistance) Step 12: Select a measure range (see Figure 3 20). These settings let the 372 set the sense resistance of the voltage or current monitor circuits of the HPU and/or LPU. Since the sense resis tance should be set according to the range of the voltage or current monitor, set the voltage range when the SMU is in the I"...
  • Page 164 Setups NOTE When the compliance, explained in the next step, is set larger than the measure range setting, the compliance is shifted to the mea sure range limit so that no more acquisition can be performed when the current or voltage reaches the limit of measure range setting.

  • Page 165: Table 3 19: Current Range For Compliance

    DUT. The protective resistance can be selected in the Resistance pop up menu with the [RESISTANCE] selector. The choices available are shown in Table 3 21. 3 53 372 User Manual...

  • Page 166: Source Output

    Setups NOTE When R mode is set, the SENSE line is disconnected from the measurement circuit, and a measurement is performed with only the FORCE line so measurement data displayed in the graph does not correspond to the source settings of a SMU, because of a voltage difference at both terminals.

  • Page 167: Table 3 22: Output Related Parameters To Be Set In Source Setup

    Stop value - Increment value x n where n indicates n th step point. Thus, the out going sweep step values going may not correspond to those to the values being returned. 3 55 372 User Manual...

  • Page 168: Table 3 23: Increment_Log Selection

    Setups CASE 3: Start, Stop and Increment_log Start, stop and increment can be set using the [START], [STOP] and [IN CREMENT_LOG] selectors, respectively. Start and stop are the start and stop values for logarithmic sweep. Incre ment_log is number of divisions per decade into which the logarithmic sweep step is divided.
  • Page 169 Start and stop can be set using the [START] and [STOP] selector, respec tively. Start and stop are the initial and final values. The start value is changed to the stop value in hold time after measurement starts as described in step 11. 3 57 372 User Manual...

  • Page 170: Axis Label

    Setups Axis Label Y LABEL Selector X LABEL Selector Figure 3 22: Graph Display in the MEASURE Menu Step 16: Define the axis name both for X and Y axes (see Figure 3 22). The axis name is automatically set when the configuration is set using the catalog setup feature.

  • Page 171: Pulse Mode

    PULSE MODE Pop up Menu Figure 3 23: Pulse Mode Pop up Menu Pulse mode must be set after setting up the Connection Setup section of CONFIG menu or after completion of the catalog setup. 3 59 372 User Manual...

  • Page 172: Switching Pulse Mode

    Pulse Mode Switching Pulse Mode The [PULSE MODE] selector turns the pulse mode ON and OFF. If the pulse mode is set to ON and the [EXIT] soft button is touched, the SMU will there after operate in pulse mode on the specified channel. To cancel the pulse mode setup with the [PULSE MODE] selector, set pulse mode to OFF, and touch the [EXIT] soft button.
  • Page 173 -10 V to + 10 V. The offset is automatically set to 0.0 or 0.0 mA, and can not be changed when the sweep mode is set to logarithmic sweep. 3 61 372 User Manual...
  • Page 174 Pulse Mode 3 62 Reference...

  • Page 175: Auxiliary Voltage Supply

    Auxiliary Voltage Supply Setup The 372 has two auxiliary voltage supply units which can be used for various purposes, such as supplying a bias to the DUT. Maximum power output is ±40 V at up to 100 mA. Setups can be made in the Source Setup Section in the CONFIG menu. The output voltage is obtained from the AUX1 and/or AUX2 terminal(s) on the test panel of the Test Fixture (see Figure 3 24).
  • Page 176 Auxiliary Voltage Supply 3 64 Reference...

  • Page 177: Measurement

    CONFIG menu. When the measurement is complete, the SINGLE indicator goes out. If the protective cover of the test fixture is in raised position, the interlock mechanism interrupts the measurement, and both the OUTPUT indica tor and SINGLE indicator go out. 3 65 372 User Manual...

  • Page 178: Repeated Measurement

    Measurement Stop Measurement Step 2: Press the [STOP] button on the front panel to immediately stop the measurement (see Figure 3 25). When measurement is terminated, the SINGLE indicator goes out. Repeated Measurement Start Measurement Step 1: Press the [REPEAT] button on the front panel to start repeated measurement (see Figure 3 25).
  • Page 179 HPU (master source unit) is being changed as follows: Make sure that the [STOP] selector of the HPU is currently displayed on the menu. If it is not, switch the page by touching the [GOTO] soft button. 3 67 372 User Manual...
  • Page 180 Measurement Touch the [STOP] selector to switch to knob entry mode. Now the numeric pop up menu appears. Change the value by turning the knob in either direction. The numer ic pop up menu will immediately disappear when you turn the general purpose knob in either direction.

  • Page 181: Adjusting The Graph Display

    The [AUTO SCALE] soft button in the CONFIG menu or the MEASURE menu can also be used to set automatic scaling. AUTO SCALE Soft Button Figure 3 27: Graph Display in the MEASURE and CONFIG Menus 3 69 372 User Manual...

  • Page 182: Automatic Scaling Adjustment

    Adjusting the Graph Display Automatic Scaling Step 1: Touch the [AUTO SCALE] soft button (see Figure 3 27). Adjustment When the [AUTO SCALE] soft button is touched, the edges and division of both X and Y axes are re evaluated so that the curves can be dis played optimally, based on the curves stored in the storage memory.

  • Page 183: Y Axis Range

    0.01 mV to 1.0 kV or -0.01 mV to -1.0 kV 1/W - When HPUI/LPUV is the Y axis component, the range is: Linear Scale: -1000.0 TS to 1000.0 TS Log Scale: 0.01 pS to 1000.0 TS or -0.01 pS to -1000.0 TS 3 71 372 User Manual...

  • Page 184: Axis (Horizontal Axis)

    Adjusting the Graph Display No unit - When HPUI/LPUI is the Y axis component, the range is: Linear Scale: -1000.0 T to 1000.0 T Log Scale: 0.01 p to 1000.0 T or -0.01 p to -1000.0 T NOTE T represents SI prefix symbol indicating 10 X Axis (Horizontal Axis) The value at the right edge of the X axis, the value of 1 DIVISION (effective only in case of linear scale) and the value at the left edge can be adjusted...

  • Page 185: Axis Range

    0.01 mV to 1.0 kV or -0.01 mV to 1.0 kV Time - In the case of time domain measurement, the range can be set only in NO SCROLL mode. The range is 0.0 ms to 500.00 ks 3 73 372 User Manual...
  • Page 186 Adjusting the Graph Display 3 74 Reference...

  • Page 187: Mathematical Operation

    Figure 3 29: MATH Application Menu and EQUATION Pop up Menu Operation Step 1: Touch the [MATH] box in the application selection box of the MEASURE menu to display the MATH application menu (see Figure 3 29). 3 75 372 User Manual...

  • Page 188: Algorithm

    Mathematical Operation Step 2: Select an mathematical equation with the [EQUATION] selector on the MATH application menu to process and re display the curves. One of four pre defined mathematical equations can be selected in the Equation pop up menu as shown in Table 3 26. Table 3 26: Equation Selection Choices Descriptions...
  • Page 189 When this feature is being turned on, the MATH icon is dis played both in the Graph Display section of the MEASURE menu and in the Graph Display Setup section of the CONFIG menu. 3 77 372 User Manual...
  • Page 190 Mathematical Operation 3 78 Reference...

  • Page 191: Switching Graph Display

    Step 1: Select the storage or reference memory, or both, the contents of which you want displayed by touching the appropriate box in the Display Source pop up menu driven by the [DISPLAY SOURCE] selec tor. The choices available are as shown in Table 3 27. 3 79 372 User Manual...

  • Page 192: Table 3 27: Display Source Selection

    Switching Graph Display Table 3 27: Display Source Selection Choices Descriptions ACQUIRED Curves stored in the storage memory are displayed. When measurement takes place, the [ACQUIRED] box is automat ically selected to display the curves. This is the default. FROM DISK Curves stored in the reference memory are displayed.

  • Page 193: Parameter Analysis Using The Cursor

    Figure 3 31: CURSOR Menu (DOT Cursor and XGONOGO Cursor) Operation These procedures are common to all cursor types: Step 1: Touch the [CURSOR] box in the application selection box of the MEASURE menu to display the CURSOR application menu. 3 81 372 User Manual...

  • Page 194: Selecting Cursor And Cursor Type

    Parameter Analysis Using the Cursor Selecting Cursor and Cursor Type As shown in Figure 3 31, contents of menu vary depending on the selected cursor type. The [CURSOR 1/2] selector and [CURSOR TYPE] selector however are always displayed. Step 2: Select cursor 1 or cursor 2 with the [CURSOR 1/2] selector. Cursor 1 is indicated by a small circle and cursor 2 side by a small square in the graph.
  • Page 195 For example, all operations to cancel the knob entry mode, touch any point in the graph or Other Areas, causes a knob assignment selection box to re display. 3 83 372 User Manual...

  • Page 196: Cursor Types

    Parameter Analysis Using the Cursor Interpolation The curves are displayed with a line connecting the measured points. In case of the cursor which moves along the curve, the points of the cursor can only be placed on the measured points, or on any position of the line that can be selected with the [INTERPOLATE] selector (see Table 3 29).

  • Page 197: Table 3 30: Dot Cursor Readout

    [DATA2] box in the MOVE pop up menu driven by the [MOVE] selector (see Figure 3 32). Movement of the Cursor The DOT cursor moves along the curve, so the NEXT/SKIP knob assignment selection box is displayed. Refer to Movement of the Cursor described above. 3 85 372 User Manual...

  • Page 198: Table 3 31: Slope Cursor Readout

    Parameter Analysis Using the Cursor SLOPE Cursor Figure 3 33 shows a case where the SLOPE cursor is selected. The SLOPE cursor is a straight line (SLOPE) going through two points which are placed anywhere or on the curve. When two slope cursors are used at the same time, the coordinate of their intersection can be obtained as well.
  • Page 199 Selection and Movement of the Curve The SLOPE cursor can be moved by three methods: Moving the point along the curve Moving the point to any position Moving the point to any position keeping the slope constant 3 87 372 User Manual...

  • Page 200: Table 3 32: Slope Cursor Move Selection

    Parameter Analysis Using the Cursor Before moving the cursor, the method must be selected from the Move pop up menu driven by the [MOVE] selector (see Table 3 32). When the method of moving the point along the curve has been selected, the curve on which the point is placed must also be selected in case two different curves are displayed (such as when HPUV&LPUV or HPUI&LPUI are selected as the Y axis component).

  • Page 201: Table 3 33: Xgonogo Cursor Readout

    X axis component of the end point 1 of the XGONOGO cursor. CENTER X= X axis component of the center point of the XGONOGO cursor. POS2 X X axis component of the endpoint 2 of the XGONOGO cursor. 3 89 372 User Manual...

  • Page 202: Table 3 34: Xgonogo Cursor Move Selection

    Parameter Analysis Using the Cursor Table 3 33: XGONOGO Cursor Readout(Cont.) Items Descriptions TOLERANCE = Tolerance is expressed in two ways: absolute length between the center point and endpoint, and percentage of the length between the center point and endpoint to the X axis component of the center point.
  • Page 203 Y axis. You can define the position and width of the cursor to provide the gonogo testing to determine whether measured curve passes by a specified tolerance when compared to an ideal curve. 3 91 372 User Manual...

  • Page 204: Table 3 35: Ygonogo Cursor Readout

    Parameter Analysis Using the Cursor MOVE Selector Readout Figure 3 37: Application Menu when the YGONOGO Cursor is Selected Table 3 35: YGONOGO Cursor Readout Choices Descriptions X axis component of YGONOGO cursor. POS1 Y = Y axis component of the endpoint 1 of the YGONOGO cursor.
  • Page 205 The GAIN cursor is effec tive only for a curve family that has more than two curves (only when the sweep mode of the slave source unit is defined to be STEPGEN). 3 93 372 User Manual...
  • Page 206 Parameter Analysis Using the Cursor Readout Figure 3 38: Application Menu when the GAIN Cursor is Selected Readout depends on the sweep direction as shown in Table 3 37 and for the case when the sweep is performed along the X axis. Table 3 37: GAIN Cursor Readout Items Descriptions...

  • Page 207: Zoom

    The zoom feature enlarges the region displayed in the zoom window over the graph. Zoom Window Crosshair Cursor ZOOM IN Soft Button Figure 3 39: Zoom Application Menu and Graph Display 3 95 372 User Manual...

  • Page 208: Zoom Area

    Zoom Zoom Area Step 3: Move the zoom window to select a region to be enlarged. The center of the zoom window always remains within the graph's borders. It cannot be moved beyond the edge of the graph. Zoom In Step 4: Touch the [ZOOM IN] soft button to enlarge the region enclosed by the zoom window (see Figure 3 40).
  • Page 209 When the graph is zoomed in, touching the [AUTO SCALE] selector (see Figure 3 40) also restores the original graph, and performs the auto scaling feature. 3 97 372 User Manual...
  • Page 210 Zoom 3 98 Reference...

  • Page 211: Text Editing On The Graph

    Deletes all existing labels. NOTE Labels written on the graph can not be expanded or moved to another position on the graph. Automatic scaling, changing X and Y axis scale or zooming have no effect. 3 99 372 User Manual...

  • Page 212: Creating A Label

    Text Editing on the Graph Soft Buttons for Text Editing Figure 3 41: Example of the Text Editing Menu Creating a Label These are procedures to create a new label: Step 1: Touch the [CREATE LABEL] soft button to display the Create Label pop up menu (see Figure 3 42).
  • Page 213 Step 4: Touch the [EXECUTE] soft button to set the label. To cancel, touch the [ESCAPE] soft button. Touching either soft button causes the Create Label pop up menu to disappear. NOTE You cannot enter more than one text label with the same content. 3 101 372 User Manual...

  • Page 214: Moving The Label

    Text Editing on the Graph Moving the Label Step 1: Touch the [MOVE LABEL] soft button to bring up the Move Label pop up menu (see Figure 3 43). When more than one label exists in the graph, all labels are changed to the selector formed labels.

  • Page 215: Removing The Label

    First select the label and then rename it. When there is only one label, the label is enclosed with a line to indi cates that it can be renamed. In this case, skip step 2 and go on to step 3. 3 103 372 User Manual...

  • Page 216: Erasing Labels

    Text Editing on the Graph Text Selected TO Selector Figure 3 45: Rename Label Pop up Menu Step 2: Select label to be renamed by touching it. Step 3: Input the new text with the [TO] selector. Step 4: Touch the [EXECUTE] soft button to set the label. To cancel, touch the [ESCAPE] soft button.
  • Page 217 Text Editing on the Graph Figure 3 46: Clear Labels Pop up Menu 3 105 372 User Manual...
  • Page 218 Text Editing on the Graph 3 106 Reference...

  • Page 219: Save And Load Settings, Curves And Programs

    Step 3: Select data type to be saved by touching appropriate box in the TYPE selection box. A file extension is determined automatically accord ing to the selected data type as shown in Table 3 39. 3 107 372 User Manual...
  • Page 220 Save and Load Settings, Curves and Programs Table 3 39: Type Selection Choices Data Type File Extension Major Menu* SETUP Settings** .SET CONFIG, DISK, UTILITY CURVE Curves .DAT MEASURE PROG Program .PRG PROG * These extensions are a default when the SAVE pop up menu is brought up on the major menu listed.

  • Page 221: Load Settings, Curves And Programs

    Save and Load Settings, Curves and Programs Load Settings, Data can be loaded from a file in the current working directory off a floppy disk. When loading data from a floppy disk. the 372 is set up as follows: Curves and Programs Settings (.SET) - The 372 is set up according to the settings stored in...
  • Page 222 Save and Load Settings, Curves and Programs LOAD Button File Selection Figure 3 48: [LOAD] Button and LOAD Pop up Menu. 3 110 Reference...

  • Page 223: Hardcopy

    Using a standard GPIB cable, connect a plotter that supports HPGL (Hewlett Packard Graphics Language) to the GPIB port on the rear panel. The GPIB parameters must be set on the 372 as shown in the IEEE 488.2 section of the UTILITY menu.
  • Page 224 Hardcopy Step 1: Touch the [UTILITY] box in the major menu selection box to display the UTILITY menu. Step 2: Set the GPIB address as follows: Touch the [ADDRESS] selector (see Figure 3 50) in the IEEE 488.2 section to bring up ADDRESS pop up menu. It consists of boxes labeled with 0 to 30 and the [OFFBUS] box.

  • Page 225: Video Printer

    Video Printer port constantly outputs video signals, a hardcopy can also be made from the video printer. When the [HARDCOPY] button on the front panel is pressed, the 372 will send a Hardcopy Trigger signal to the video printer. Floppy Disk...
  • Page 226 Sends Hardcopy Trigger signal to a video printer. NOTE A two bits TIFF format file is created in the 372. Thus, some ap plication software may not be read by this file unless it is converted to an eight bit TIFF format file.
  • Page 227 Hardcopy PORT Selector HARDCOPY Section HARDCOPY Button Port Related Selectors Figure 3 51: [HARDCOPY] Button and HARDCOPY Section in the UTILITY Menu. 3 115 372 User Manual...
  • Page 228 Hardcopy 3 116 Reference...

  • Page 229: Initializing The 372

    Initializing the 372 The [INITIALIZE] soft button in the UTILITY menu brings the 372 back to the state it had after power up, with the exception of the choices that were made on the major menu, the program in the PROG menu and all settings estab lished in the UTILITY menus.
  • Page 230 Initializing the 372 3 118 Reference...

  • Page 231: Date And Time

    [DATE: MONTH] Month 1 to 12, in step of 1 Values of the hardware hardware [DATE: DAY] Day of 1 to 31 or less (varies calendar month depending on the month setting), in step of 1 3 119 372 User Manual...
  • Page 232 Date and Time Table 3 42: TIME Settings Selectors Settings Setting Range Default [TIME: HOUR] Hours 0 to 23, in step of 1 Values of Values of [TIME: MINUTE] Minutes 0 to 59, in step of 1 hardware clock clock [TIME: SECOND] Second 0 to 59, in step of 1...

  • Page 233: Time Stamp

    Step 3: To enable the time stamp function, touch the [ON] box on the pop up menu. Touch the [OFF] box to disable it. For the [DISPLAY SOURCE] selector, refer to Switching Graph Display in this section. 3 121 372 User Manual...
  • Page 234 Time Stamp 3 122 Reference...

  • Page 235: Adjusting Crt Brightness

    Maximum and minimum brightness of the CRT are defined to 200 and 0, respectively. The CRT brightness can be adjusted from 50 to 200. BRIGHTNESS Selector Figure 3 55: DISPLAY Section in the Utility Menu 3 123 372 User Manual...
  • Page 236 Adjusting CRT Brightness 3 124 Reference...

  • Page 237: Id Information

    ID Information The ID Information section in the UTILITY menu shows the ID information of the 372 (see Figure 3 56). Touch the [UTILITY] box in the major menu selec tion box to display the UTILITY menu. ID Information Section...
  • Page 238 ID Information 3 126 Reference...

  • Page 239: Floppy Disk System

    Floppy Disk System Introduction The 372 is equipped with a floppy disk drive which runs the MS DOS operat ing system. In this section, MS DOS conventions and the instrument limita tions are explained for those not familiar with MS DOS.

  • Page 240: File Name

    HPGL plotter. A file does not always need a file name extension. In fact, directory names are not usually given extensions. The 372 does not support extensions for directory names, only base names. Reference of Files and Directories A reference of the files and directories is always made using FILE/DIR List or File List in the menu as shown in Figure 3 58.

  • Page 241: Operation

    Floppy disks are provided with a write protection mechanism. It is preferable to leave the mechanism in the write protection position as indicated in Figure 3 59, except when you want to write or delete data. This prevents saved data from being accidentally deleted. 3 129 372 User Manual...

  • Page 242: Inserting A Floppy Disk

    Floppy Disk System Shutter To Protect from Erasure Front Back To Re record Write Protect Tab Figure 3 59: Write Protection Inserting a Floppy Disk Insert a floppy disk into the disk drive slot with the disk label facing up, and shutter first (see At A Glance in this section), until it locks into place.

  • Page 243: Removing A Floppy Disk

    Information Section SCROLL BACKWARD Soft Button Operation Section FILE /DIR List (FILE/DIR Selection Box) SCROLL FORWARD Soft Button FILE/DIR Informations Figure 3 61: DISK Menu 3 131 372 User Manual...
  • Page 244 Operation Section - Allows you to reference file lists and operate files and directories. The 372 uses disks in MS DOS format. This allows you to exchange files with other computers supporting MS DOS. If you are not familiar with MS DOS, refer to the Introduction of this chapter.

  • Page 245: Outline Of File Operations

    CHANGE DIR Changes the current working directory. COPY FILE Copies a file. REMOVE FILE/DIR Removes a file or directory. RENAME FILE/DIR Renames a file base name or directory name. FORMAT DISK Initializes a floppy disk. 3 133 372 User Manual...

  • Page 246: Saving Settings, Curves And Programs

    .SET CURVE Curves .DAT PROG Program (see 372 Based Program .PRG ming) Step 3: With the [NAME] selector, enter a file base name of up to eight characters with the character keypad pop up menu. A file extension is automatically determined as described above.

  • Page 247: Loading Settings, Curves And Programs

    Loading Settings, Curves and Programs This loads the file specified in the FILE/DIR List. Now the 372 is set accord ing to the type of file as shown in Table 3 45. Table 3 45: Action at Loading...

  • Page 248: Creating A New Directory

    Figure 3 64: MAKE DIR Pop up Menu Step 2: With the [NAME] selector, enter a directory name of up to eight characters with the character keypad pop up menu. The 372 does not allow you to include file extension in directory names.

  • Page 249: Copying A File

    CRT. The file selected in step 1 is displayed in the FROM field in the pop up menu. COPY FILE Soft Button FROM Field TO Selector Figure 3 66: Copy File Pop up Menu 3 137 372 User Manual...

  • Page 250: Removing A File/Directory

    Floppy Disk System Step 3: With the [TO] selector, enter a file base name or path name, without file extension, with the character keypad pop up menu accord ing to the following rules. In this operation, file extension is always maintained.

  • Page 251: Renaming File/Directory

    Always make sure that no required files are stored on the disk before formatting. Step 1: Insert the floppy disk into the disk drive. Step 2: Touch the [FORMAT DISK] soft button to bring up the FORMAT pop up menu on the CRT. 3 139 372 User Manual...
  • Page 252 Floppy Disk System Format Type Selection Box FORMAT DISK Soft Button Figure 3 69: FORMAT Pop up Menu Step 3: Select a format type by touching the box with its format type in the Format Type selection box. Selections are as follows: Table 3 46: Format Type Selection Choices Format Type...
  • Page 253 When the formatting is complete, the message Format Complete appears in the message display zone. Wait until the LED extinguishes and Format Complete message appears, before you try to remove the disk. 3 141 372 User Manual...
  • Page 254 Floppy Disk System 3 142 Reference...

  • Page 255: 372 Based Programming

    Programmer manual. The basic features and a complete description of the instructions that are supported by the 372 are found in Tables 3 49 and in Table 3 50. Instructions The instrument sequentially executes a program by reading instructions from memory.

  • Page 256: Single Step Mode

    The contents of the program trace memory can be listed on the CRT. Controlling/Interrupting Another Instrument The 372 has a TTL I/O port on the rear panel which provides a TTL compat ible, 5 bit outgoing parallel signal and a1 bit incoming IN/OUT function. Only 372 based programming instructions can use this IN/OUT function to control other instruments connected to the TTL I/O port.

  • Page 257: Menu Selection

    372 Based Programming Control Section Program Edit Menu Program Trace Menu EDIT/TRACE Selection Box SCROLL BACKWARD Soft Button LINE Selector SCROLL FORWARD Soft Button Figure 3 71: PROG Menu Menu Selection Select the EDIT/TRACE selection box in the Control section to switch the Program Edit menu to the Program Trace menu, or vice versa.

  • Page 258: Controlling Program List Displays

    372 Based Programming Controlling Program List Displays The Program Edit menu can only display programs nine lines at a time. In addition to the scrolling procedure described in Basic Menu Operation in section 2, a procedure that specifies the beginning of a display line can be used with the [LINE] selector.

  • Page 259: Modifying Programs

    372 Based Programming Step 1: Touch the [INSTRUCTION] selector located on the line you want to enter, to bring up the INSTRUCTION pop up menu (see Figure 3 72). Step 2: Touch the box with the desired instruction. After the instruction is selected, up to three [ARGUMENT] selector(s) appear depending on the type of selected instruction.
  • Page 260 372 Based Programming Inserting Line The [INSERT LINE] soft button inserts a blank line immediately before the specified line. Step 1: Touch the [INSERT LINE] soft button to bring up the INSERT LINE pop up menu (see Figure 3 74).
  • Page 261 372 Based Programming If you want to delete multiple lines, for example, from lines from 10 to 15, first increase the value in the [FROM] selector to 15 by rotating the knob, then decrease it to 10. This sets the [FROM] selector to set to 10 and the [TO] selector to 15.

  • Page 262: Program Execution

    372 Based Programming Step 4: Touch the [EXECUTE] soft button to erase the program. To cancel, touch the [ESCAPE] soft button. Touching either soft button cause the pop up menu to disappear. CLEAR LINES Soft Button Figure 3 76: Clear Lines Pop up Menu...

  • Page 263: Execution In Normal Mode

    372 Based Programming Execution in Normal Mode Start Execution Step 1: Press the [START] button while the Program Edit, or a menu other than the PROG menu, is displayed on the CRT (see Figure 3 76). If the program execution is terminated normally, the message Program Stopped: Execution Complete appears at the message display zone.
  • Page 264 372 Based Programming Figure 3 78: Trace displays in the Program Trace Menu Controlling Trace List Display The Program Trace menu can display trace results 18 lines at a time. When it is necessary to display another area of the trace list, scroll the list by using the general purpose knob or [PAGE FORWARD] and [PAGE BACKWARD] soft buttons as described in Basic Menu Operation.

  • Page 265: Saving And Loading The Program

    372 Based Programming To stop the program while it is being executed, press the [STOP] button on the front panel. Suspend the Program with PAUSE in Either Mode When the PAUSE instruction statement is encountered during execution, the program is suspended, the PROGRAM indicator blinks and the message Program Paused is displayed in the message display zone.

  • Page 266: Flow Control

    372 Based Programming FUNC ENTRY3 Processing 3 FUNC ENTRY4 Processing 4 RETURN Each subroutine name can consist of one to eight alphanumeric characters. A subroutine is called by using the statement CALL <subroutine name>. Flow Control In general, a program is executed in the order in which instructions are described.

  • Page 267: Register

    372 Based Programming Wait and Suspend Two type of instructions allow timing of measurements or synchronization with measurements of another instrument. The WAIT instruction is specified by time, and the WAITTTL instruction waits until an input signal from the TTL I/O port is asserted or unasserted.
  • Page 268 372 Based Programming Table 3 49: Summary of the Instruction Set (Cont.) Function Instructions Descriptions WAITTTL Wait for external signal input. Interfacing with External De TTLOUTPUT External signal output. vices Floppy disk file SAVE, LOAD Saving/loading of files. Service Request to controller.
  • Page 269 372 Based Programming Table 3 50: Instruction Set in alphabetical order Instruction Argument Description AUTO Auto scaling automatically optimizes the X and Y SCALE axes scales of a graph displayed in the MEA SURE menu. This function is used upon comple tion of a measurement.
  • Page 270 372 Based Programming Table 3 50: Instruction Set in alphabetical order (Cont.) Instruction Argument Description FUNC Declares the entry point of subroutine <NAME>. Subroutines are called with the CALL instruction and are terminated by the RETURN instruction. Execution continues with the next instruction after <NAME>...
  • Page 271 372 Based Programming Table 3 50: Instruction Set in alphabetical order (Cont.) Instruction Argument Description LOAD <TYPE> Loads settings or curves from floppy disk file. The <NAME> file must reside in the current working directory. Change the current working directory, if required, in the DISK menu in advance.
  • Page 272 Generates a service request SRQ to the controller connected to the GPIB port on the rear panel, while placing the user defined event in the EVENT queue. This instruction is valid only when the 372 is in the remote control mode. <NUMB>::={1|2|3|4} The number 1 to corresponds to the event codes from 453 to 456, respectively.

  • Page 273: Sample Programs

    To execute the program: Step 1: Mount the provided FET (2N4392) to the Test Fixture. Step 2: Insert the disk into the disk drive of the 372. Step 3: Load the program as follows: Display the Disk menu by touching the [DISK] box in the major menu selection box.
  • Page 274 Sample Programs Line No. Statements MAIN PAUSE LOAD SETUP ID_VDS.SET SINGLE PAUSE LOAD SETUP ID_VGS.SET SINGLE PAUSE LOAD SETUP IGSS_VGS.SET SINGLE PAUSE LOAD SETUP IDSS_VDS.SET SINGLE 3 162 Reference...

  • Page 275: Example 2

    FOR X= 0 3 WAIT 2 CALL FET&X SINGLE ENDFOR ENDFOR FUNC FET0 LOAD SETUP ID_VDS.SET RETURN FUNC FET1 LOAD SETUP ID_VGS.SET RETURN FUNC FET2 LOAD SETUP IGSS_VGS.SET RETURN FUNC FET3 LOAD SETUP IDSS_VDS.SET RETURN 3 163 372 User Manual...

  • Page 276: Example 3

    Sample Programs Example 3 The third example illustrates how to perform GONOGO testing and how to report the result when it fails. Two programs in which the BETA vs. IC measurements are performed are shown below. The program \BJT\PRG_BJT3.PRG, performs GONOGO testing after the measurement is made if BETA within the range from 50 to 150 at 1 mA with respect to the IC.

  • Page 277: Example 3 2: Prg_Bjt4.Prg

    Sample Programs Example 3 2: PRG_BJT4.PRG Line No. Statements MAIN LOAD SETUP GONO_BT2.SET FOR X= 0 19 PAUSE SINGLE IF GONOGO == FAIL HARDCOPY GPIBPLOTTER CURVE ENDIF ENDFOR 3 165 372 User Manual...

  • Page 278: Example 4

    Requirements for this equipment are: 1. A TTL I/O port which can be connected to the 372 via a cable. This TTL I/O interface, which provides 1 bit outgoing line (IN BIT 0) and 5 bits incoming parallel signals (OUT BIT 0 to 4), has same pinout and signal name as the TTL I/O interface of the 372.
  • Page 279 Execute the program as was done in step 1 through step 5 of Example 1. Line No. Statements MAIN LOAD SETUP GON_VCEO.SET FOR X= 1 0 WAITTTL 1 SINGLE IF GONOGO == PASS TTLOUTPUT 00000 ELSE TTLOUTPUT 00001 ENDIF ENDFOR 3 167 372 User Manual...
  • Page 280 Sample Programs 3 168 Reference...

  • Page 281: Gpib

    Programming Command Set. This GPIB port is also used as a plotter port for an HPGL plotter, and allows the 372 to transfer data of the CRT, curves, or the graph to the plotter.

  • Page 282: Configurations

    GPIB Configurations Devices can be connected to the GPIB in linear or star configurations, or in combination. A linear hookup is one where the GPIB cable is strung from one device to the GPIB cables in the system. A star setup is one where one end of all the GPIB cables in the system are attached to one device.

  • Page 283: Restrictions

    (AH) Source Handshake Complete capability (SH) Listener (L) Basic Listener, unaddress if MTA, no Listen Only Mode Talker (T) Complete capability Device Clear (DC) Complete capability Remote/Local (RL) Complete capability Service Request (SR) Complete capability 3 171 372 User Manual...

  • Page 284: Gpib Parameters

    GPIB bus can use the same primary address. TERMINATOR - The 372 interprets either an LF or a data byte with EOI as the end of message. Messages are terminated with a CR LF and EOI is set true.

  • Page 285: Talk Address

    Addressed commands are sent to specific devices on the bus. The control ler sends addressed commands by placing certain values on the data lines with ATN asserted. Table 3 52 shows the GPIB interface messages implemented in the 372. Table 3 52: GPIB Interface Messages Interface Message...
  • Page 286 GPIB 3 174 Reference...

  • Page 287: Appendices

    Appendices...

  • Page 289: Appendix A: Options And Accessories

    Switzerland, 240V/6A, 50 Hz 161 0154 00 OPTION 20: Extension Cable Set Option 20 provides a set of extension cables to connect the 372 to a wafer prober. The following extension cables are included. Table A 2: Extension Cable Set...

  • Page 290: Standard Accessories

    Appendix B: Specifications Standard The following standard accessories are provided. Accessories Table A 3: Standard Accessories Accessory Part Number User Manual 070 8467 00 Programmer Manual 070 8619 00 3.5 inch Floppy Disk (2 HD) 119 3301 00 Power Cord 161 0066 00 Fuse (250V, 2A, Fast Blow) 159 0021 01...

  • Page 291: Other Accessories

    Service Manual 070 8466 00 Test Adapter: INSULATED BOARD A1110 GPIB cable 012 0991 00 Centronics Printer Cable 012 1250 00 Video Printer Cable 012 1425 00 Triaxial Connector 131 5526 00 Camera: C 9 Cart: K217S, K220 372 User Manual...
  • Page 292 Appendix B: Specifications Appendices...

  • Page 293: Appendix B: Specifications

    Table A 5: Nominal Traits * High Power Unit (HPU) Item Description Ranges and Resolution I Range Range Resolution 100 pA 25 fA 1 nA 250 fA 10 nA 2.5 pA 100 nA 25 pA 1 mA 250 pA 372 User Manual...
  • Page 294 Appendix B: Specifications Table A 5: Nominal Traits * High Power Unit (HPU) (Cont.) Item Description I Range (cont.) 10 mA 2.5 nA 100 mA 25 nA 1 mA 250 nA 10 mA 2.5 mA 100 mA 25 mA 400 mA 100 mA V Range Range...
  • Page 295 5 ms to 60 sec, with 3 digits resolution, or 1 to 36000 line cycle, with 1 line cycle resolution Hold Time 0 to 600 sec, with 3 digits resolution Pulse Width 1 ms to 60 sec, with 3 digits resolution 372 User Manual...
  • Page 296 Appendix B: Specifications Table A 8: Nominal Traits * Acquisition System (Cont.) Item Description Synchronized Log Sweep Ratio 0.0002 0.0005 0.001 0.002 0.005 0.01 0.02 0.05 1000 2000 5000 Synchronized Log Sweep Offset Resolution 1/4000 of output range Time Domain Measure Hold Time 0 to 600 sec, with 3 digits resolution Measure Interval...
  • Page 297 Table A 11: Nominal Traits * Interface Item Description GPIB The 372 GPIB port conforms to the IEEE Std. 488. 1-1987. The GPIB commands conform to either IEEE std. 488.2-1987 or Tektronix Codes, Format, Conver sions and Features Standard. Plotter The Plotter port conforms to the IEEE Std.

  • Page 298: Test Fixture Specification

    Appendix B: Specifications Test Fixture Specification Table A 12: Nominal Traits * Interlock System Item Description Interlock System Enables High Voltage relays and Power MOS FETs (100 V and 200 V) lines when the protective cover is closed. The OUTPUT LED (red) lights. Three mechani cal micro switches in the Test Fixture are interlock switches.

  • Page 299: Warranted Characteristics

    ±0.1% ±1.5 nA +100 fA x Vo /1 V 10 mA ±0.1% ±15 nA 100 mA ±0.1% ±150 nA 1 mA ±0.1% ±1.5 mA 10 mA ±0.1% ±15 mA 100 mA ±0.1% ±150 mA 400 mA ±0.1% ±600 mA A 11 372 User Manual...
  • Page 300 Appendix B: Specifications Table A 15: Warranted Characteristics - High Power Unit (HPU) (Cont.) Item Description I range Source Accuracy Range Accuracy 100 pA ±0.6% ±6 pA +100 fA x Vo /1 V 1 nA ±0.6% ±7 pA +100 fA x Vo /1 V 10 nA ±0.5% ±23 pA +100 fA x Vo /1 V...
  • Page 301 ±0.1% ±1.8 mA 10 mA ±0.1% ±18 mA 100 mA ±0.1% ±180 mA V range Measurement Accuracy Range Accuracy 0.1 V ±0.1% ±500 mV ±0.1% ±500 mV 10 V ±0.1% ±5 mV 100 V ±0.1% ±50 mV A 13 372 User Manual...
  • Page 302 Appendix B: Specifications Table A 16: Warranted Characteristics - Low Power Unit (LPU) (Cont.) Item Description V range Source Accuracy Range Accuracy. 0.1 V ±0.1% ±500 mV ±0.1% ±500 mV ±0.1% ±500 mV 10 V ±0.1% ±5 mV 100 V ±0.1% ±50 mV I mode Source Maximum Voltage Output Current...
  • Page 303 90 to 110 V (100 V Nominal) 115 V HIGH: 108 to 132 V (120 V Nominal) 230 V LOW: 180 to 220 V (200 V Nominal) 230 V HIGH: 216 to 250 V (240 V Nominal) A 15 372 User Manual...
  • Page 304 Appendix B: Specifications Table A 20: Warranted Characteristics - Power Requirements (Cont.) Item Description Source Frequency 48.0 to 63.0 Hz Source Current 3.5 A (at 50 Hz, 90 V line) Power Consumption 150 W (Typical), 250 W (Maximum) Table A 21: Warranted Characteristics - Environmental, Safety and Reliability Item Description Temperature...
  • Page 305 Meets AST D999 75, Method A, Para. 7.1 (National Safe Transit Association test procedure 1A B 1). Drop of Packaged Product Meets Tektronix Std 062 2858 0X, Rev. B. Stacking Height Maximum 3 packages, meets Tektronix Std 062 2585 0X, Rev. B.
  • Page 306 Appendix B: Specifications Table A 23: Warranted Characteristics - Test Adapter Item Description Test Adapters Residual Resistance Teflon terminal (contact resistance) t 100 mW Test socket (contact resistance) t 100 mW Test Adapter Stray Capacitance Between Teflon terminal and other t 15 pF A 18 Appendices...

  • Page 307: Typical Characteristics

    70 dB at 50 or 60 Hz 32 or 512) Common Mode Rejection Ratio (for averaging mode u 70 dB at 50 or 60 Hz 32 or 512) Guard Output Resistance 150 W Guard Offset Relative to Output t 1 mV A 19 372 User Manual...
  • Page 308 Appendix B: Specifications Table A 25: Typical Characteristics - Low Power Unit (LPU) Item Description Voltage Source Noise and Ripple t 0.0 5% of voltage range + 10 mV at 20 MHz bandwidth. Voltage Source Range Switching Noise Current measurement range switching: t 0.1% of voltage range + 10 mV.
  • Page 309 Pulse Width ≥ 5 ms (Pulse period x measurement point x number of aver age / 4) + range changing time + hold time Calibration Execution Time Normal Calibration Approximately 100 s Extended Calibration Approximately 200 s A 21 372 User Manual...
  • Page 310 Appendix B: Specifications Table A 28: Typical Characteristics - CPU System Item Description Battery Back up Time 5 Years (Minimum) 10 Years (Typical). Display Speed 600 points/sec (at averaging mode OFF). Table A 29: Typical Characteristics - Display System Item Description Scanning Frequency Vertical 36.06 kHz...
  • Page 311 Appendix B: Specifications Table A 32: Typical Characteristics * Mechanical Item Description Finish Type Tektronix Blue, painted pebblegrain material on alumi num cabinet. Weight 32 kg 40 kg, when packaged for shipment. Overall Dimensions Height 266 mm without feet 278 mm with feet...
  • Page 312 Appendix B: Specifications A 24 Appendices...

  • Page 313: Appendix C: Calibration And Diagnostics

    When the internal operating temperature has changed considerably since the last calibration. When the internal operating temperature changes by ±5_ C, the 372 displays the message Recalibrate due to temperature variation" in the message display zone of the CRT. Prior to performing a measurement that requires the highest possible level of accuracy.

  • Page 314: Operation

    Appendix B: Specifications The self diagnostics are automatically executed at power up with the excep tion of some routines, and tests the functionality of all components. If all tests pass, the CONFIG menu appears on the CRT. If the test fails at power up, the Diagnostic menu appears so you can check and find out which component does not work properly.
  • Page 315 FORCE terminal on the test fixture (see Figure A 2). Digital Voltmeter Input Ground Figure A 2: Connecting a Digital Voltmeter Step 3: Touch the [REFERENCE ADJUST] soft button to bring up the Reference Adjust pop up menu. Step 4: Read the reference voltage: A 27 372 User Manual...
  • Page 316 Touch the [EXECUTE] soft button to read the reference voltage. Instead of the VALUE selection box, the [VALUE] selector appears, indicating the value of reference voltage which the 372 recognizes. The Reference Adjust pop up menu is still active. Read the reference voltage indicated on the digital voltmeter to compare with the reference voltage displayed on the [VALUE] selector.

  • Page 317: Calibration

    Appendix B: Specifications Step 6: Touch the [EXECUTE] soft button to set the reference voltage. This informs the 372 of the accurate output voltage from the reference If you touch the [EXECUTE] soft button at this point, the Reference Adjust pop up menu disappears.
  • Page 318 Appendix B: Specifications Step 2: Select the calibration mode by touching the box in the MODE selection box described in Table A 36. Table A 36: MODE Selection Choices Mode Descriptions NORMAL Normal Calibration Corrects offset drift value. (OFFSET) mode EXTENDED Extended Calibration Corrects offset and gain...

  • Page 319: Self Test

    Appendix B: Specifications Self Test Touching the [DIAGNOSTICS] soft button in the UTILITY menu displays the Diagnostic menu so you can check if the 372 functions properly. DIAGNOSTICS Soft Button Figure A 5: [DIAGNOSTICS] Soft Button Test Procedure As shown in Figure A 6, test items are classified into three levels: BLOCK, AREA, and ROUTINE.
  • Page 320 Appendix B: Specifications Step 3: Set the object of the test in the Group Exec selection box. In the self test, one or all items displayed on the Test Item selection box can be tested. Step 4: Select test items in the test item selection box. Selecting the test items is unnecessary when the ALL selection box is set ON.
  • Page 321 CH1 CH2 FORCE, CH2 CH3 FORCE, CH3 CH1 FORCE CONNECTION OUTPUT GUARD CH1 HPU, CH2 HPU, CH3 HPU, CH2 LPU, CH3 LPU, CH1 GNDU, CH2 GNDU, CH3 GNDU Figure A 6: Hierarchy Composition of Self Test Items A 33 372 User Manual...
  • Page 322 Appendix B: Specifications Level Selection Box Group Exec Selection Box Pass Mode Selection Box Block Level Test Item Selection Box Figure A 7: SELF TEST Menu of the BLOCK Level Figure A 8: SELF TEST Menu of the AREA Level A 34 Appendices...
  • Page 323 Test item indicates the item displayed in each box of this selection box. The test items are also called test block in BLOCK level, test area in AREA level and test routine in ROUTINE level. A 35 372 User Manual...
  • Page 324 Appendix B: Specifications Pass Mode Selection Box - When pass mode is set to CONTINUOUS, the designated test is repeated until the [STOP] button on the front panel is pressed. By setting it to SINGLE, the designated test is carried out once.
  • Page 325 [ ] Normality check for output from display memory REAL TIME CLOCK Checks real time clock. REAL TIME CLOCK [ ] Real time clock check BATTERY [ ] Battery check EEPROM Checks EEPROM. CHECKSUM [ ] Checksum check of EEPROM. A 37 372 User Manual...
  • Page 326 Appendix B: Specifications Table A 37: Self Test Items (Cont.) AREA Level ROUTINE Level Descriptions READ/WRITE [ ] Read/Write check of EEPROM. The data in the EEPROM are saved in another memory before test, and restored after function test. NOTE: Read/Write test of EEPROM shortens its life time so that this test can not be performed in loop pass test.
  • Page 327 -POLARITY [ ] D/A converter: Negative value conversion function check OFF OSC. [ ] Oscillation monitor function check in oscillating condition. ON OSC [ ] Oscillation monitor function check in non oscillat ing condition A 39 372 User Manual...
  • Page 328 Appendix B: Specifications Table A 37: Self Test Items (Cont.) AREA Level ROUTINE Level Descriptions +OVERVOLT [ ] Overvoltage monitor function check in positive overvoltage condition -OVERVOLT [ ] Overvoltage monitor function check in negative overvoltage condition. OFF OVERVOLT [ ] Overvoltage monitor function check in non overvol tage condition.
  • Page 329 [ ] 1 mA range sense function check 100 nA [ ] 100 nA range sense function check 1 nA [ ] 1 nA range sense function check K520 RELAY [ ] K520 relay function check (current sense resis tance detaching check) A 41 372 User Manual...
  • Page 330 Appendix B: Specifications Table A 37: Self Test Items (Cont.) AREA Level ROUTINE Level Descriptions I FORCE Checks current source function. LOW GAIN [ ] Low gain switching function check HIGH GAIN [ ] High gain switching function check +OFFSET [ ] Positive zero adjustment check in positive current offset condition.
  • Page 331 K714/704 c/c [ ] Check with relay K714 closed and K704 closed K714/704 o/c [ ] Check with relay K714 open and K704 closed. K714/704 c/o [ ] Check with relay K714 closed and K704 open. A 43 372 User Manual...
  • Page 332 Appendix B: Specifications Table A 37: Self Test Items (Cont.) AREA Level ROUTINE Level Descriptions OUTPUT SENSE and FORCE Block CONNECTION Checks output lines. Before test, patch wiring on the patch panel of the Test Fixture must be made as shown below.

  • Page 333: Check Of Front Panel Control And Ttl I/O

    CRT. When you press the [STOP] button on the front panel, the Touch Panel menu disappears, and the Diagnostic menu is displayed again. Figure A 10: TOUCH PANEL Menu A 45 372 User Manual...
  • Page 334 Appendix B: Specifications BUTTON When a BUTTON test is run on the ROUTINE level, a picture of the button on the front panel is displayed as shown in Figure A 11. The buttons dis played on the menu, except the [EXIT] soft button at the lower right part of the menu, cannot be touched.
  • Page 335 By pressing the [STOP] button on the front panel, the KNOB menu disap pears and the Diagnostic menu is displayed again. Figure A 12: KNOB Menu A 47 372 User Manual...
  • Page 336 Appendix B: Specifications When the LED test is run on the ROUTINE level, a menu consisting of ON/ OFF soft buttons as shown in Figure A 13 appears. These soft buttons on the menu correspond to the indicator on the front panel. By touching an [ON] soft button on the menu, the corresponding LED indicator lights and goes out by touching an [OFF] soft button.
  • Page 337 Touch each button and check for proper opera tion. By pressing the [STOP] button on the front panel, the SOUND menu disap pears and the Diagnostic menu is displayed again. Figure A 14: SOUND Menu A 49 372 User Manual...
  • Page 338 Appendix B: Specifications TTL I/F When the TTL I/F test is executed in the ROUTINE level, a menu with the [INPUT] soft button and 5 [OUTPUT:X] soft buttons (X from 0 to 4) as shown in Figure A 15 appears. The [INPUT] soft button corresponds to the input line represented by the IN BIT 0 of the TTL I/F port.

  • Page 339: Appendix D: Factory Initialization Settings

    This appendix does not show catalog default settings for P channel FETs and PNP type BJTs. However, all settings are the same as those for N chan nel FETs and NPN type BJTs, with the exception of the parity of the current and/or voltage settings. A 51 372 User Manual...

  • Page 340: Id Vs. Vds

    Appendix B: Specifications ID vs. VDS Items Settings Y Label X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 1.0 V Voltage Voltage Steps Sweeps A 52 Appendices...

  • Page 341: Idss Vs. Vds

    Appendix B: Specifications IDSS vs. VDS Items Settings Y Label IDSS X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 1.0 V IDSS Voltage Sweeps A 53 372 User Manual...

  • Page 342: Igss Vs. Vgs

    Appendix B: Specifications IGSS vs. VGS Items Settings Y Label IGSS X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 1.0 V IGSS Voltage Sweeps A 54 Appendices...

  • Page 343: Id Vs. Vgs

    Appendix B: Specifications ID vs. VGS Items Settings Y Label X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 1.0 V Voltage Voltage Sweeps Constant A 55 372 User Manual...

  • Page 344: Gm Vs. Vgs

    Appendix B: Specifications gm vs. VGS Items Settings Y Label X Label Y Bottom 0.0 mS Y Top 1.0 mS X Left 0.0 V X Right 1.0 V Voltage Voltage Sweeps Constant A 56 Appendices...

  • Page 345: Gm Vs. Id

    Appendix B: Specifications gm vs. ID Items Settings Y Label X Label Y Bottom 0.0 mS Y Top 1.0 mS X Left 0.0 mA X Right 1.0 mA Voltage Voltage Sweeps Constant A 57 372 User Manual...

  • Page 346: Ic Vs. Vce

    Appendix B: Specifications IC vs. VCE Items Settings Y Label X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 1.0 V Current Voltage Steps Sweeps A 58 Appendices...

  • Page 347: Icbo Vs. Vcbo

    Appendix B: Specifications ICBO vs. VCBO Items Settings Y Label ICBO X Label VCBO Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 200.0 V ICBO Voltage Sweeps VCBO A 59 372 User Manual...

  • Page 348: Iebo Vs. Vebo

    Appendix B: Specifications IEBO vs. VEBO Items Settings Y Label IEBO X Label VEBO Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 100.0 V IEBO Voltage Sweeps VEBO A 60 Appendices...

  • Page 349: Beta Vs. Ic

    Appendix B: Specifications BETA vs. IC Items Settings Y Label X Label Y Bottom 100.0 m Y Top 1.0 k X Left 1.0 pA X Right 1.0 A Current Voltage Sweeps Constant A 61 372 User Manual...

  • Page 350: Vce & Vbe Vs. Ic

    Appendix B: Specifications VCE & VBE vs. IC Items Settings Y Label VCE & VBE X Label Y Bottom 10.0 mV Y Top 10.0 V X Left 1.0 pA X Right 1.0 A VCE & Current Current Sweeps Sweeps A 62 Appendices...

  • Page 351: Ic Vs. Vbe

    Appendix B: Specifications IC vs. VBE Items Settings Y LabeI X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 1.0 V Voltage Voltage Sweeps Constant A 63 372 User Manual...

  • Page 352: Ic Vs. Ib

    Appendix B: Specifications IC vs. IB Items Settings Y LabeI X Label Y Bottom 0.0 mA Y Top 10.0 mA X Left 0.0 mA X Right 10.0 mA Current Voltage Sweeps Constant A 64 Appendices...

  • Page 353: Ic & Ib Vs. Vbe

    IC & IB vs. VBE Items Settings Y LabeI IC & IB X Label Y Bottom 0.01 pA Y Top 1.0 A X Left 0.0 V X Right 1.0 V IC & IB Voltage Voltage Sweeps Sweeps A 65 372 User Manual...

  • Page 354: Ib Vs. Vce

    Appendix B: Specifications IB vs. VCE Items Settings Y LabeI X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 mV X Right 100.0 mV Current Current Sweeps Steps A 66 Appendices...

  • Page 355: If Vs. Vf

    Appendix B: Specifications IF vs. VF Items Settings Y LabeI X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 1.0 V Voltage Sweeps A 67 372 User Manual...

  • Page 356: Ir Vs. Vr

    Appendix B: Specifications IR vs. VR Items Settings Y LabeI X Label Y Bottom 0.0 mA Y Top 1.0 mA X Left 0.0 V X Right 10.0 V Voltage Sweeps A 68 Appendices...

  • Page 357: Appendix E: Messages

    Media full Media protected Missing media Oscillation detected Output disabled - Interlock Over voltage condition - acquisition stopped Program currently running Program paused Program terminate Recalibrate - due to Temperature variation Save complete Searching point A 69 372 User Manual...
  • Page 358 Appendix B: Specifications A 70 Appendices...

  • Page 359: Appendix F: Connector Pin Assignment

    Appendix F: Connector Pin Assignment This appendix describes the pin out and signal definitions of the TTL I/O, Video Printer and Test Fixture connectors on the 372 rear panel. TTL I/O Interface This TTL I/O Interface provides TTL compatible, 5 bits outgoing parallel signals and 1 bit incoming IN/OUT function.

  • Page 360: Video Printer Interface

    Appendix B: Specifications Video Printer Table A 40 gives the Video Printer connector's pin out and signal definitions. Interface Table A 40: Video Printer Connector Pin Number Signal Name Signal Level Direction (NC) (NC) C.SYNC CLOCK 1 (NC) COPYRDY 0 COPYBUSY 0 V.SYNC 0 (NC)

  • Page 361: Test Fixture Interface

    40 V, 100 mA AUX 1 Shield AUX 2 40 V, 100 mA AUX 2 Shield Interlock 0 (twisted pair with PIN 2) Safety Ground Safety Ground Floating Ground (spare) (spare) Floating Ground Floating Ground Safety Ground A 73 372 User Manual...
  • Page 362 Appendix B: Specifications A 74 Appendices...

  • Page 363: Appendix G: Repackaging For Shipment

    If the instrument is to be shipped a long distance by commercial transporta tion, use the original packaging material if possible. If the instrument is to be shipped to a Tektronix Service Center for service or repair, attach a tag to the instrument showing the following; owner of the...
  • Page 364 Appendix B: Specifications A 76 Appendices...

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