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Gould 400 Series Operator's Manual

Digital storage oscilloscopes
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Gould 400 Series
Digital Storage Oscilloscopes
Operators Manual

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  • Page 1 Gould 400 Series Digital Storage Oscilloscopes Operators Manual...
  • Page 2 Gould 400 Series Digital Storage Oscilloscopes Operators Manual Copyright@1990 Gould lnc., Instruments Division (Gould Electronics Ltd.)

  • Page 3: Table Of Contents

    400 Operators Manual Contents Introduction Getting Started Advanced Features The Menus Performance Checking Waveform Processing Battery Unit Operation Alphabetical Summary Appendix 1 Error Messages Appendix 2 Specification Appendix 3 Remote Operation Appendix 4 Front & Back Pictures Service Facilities...
  • Page 4 Contents 400 Operators Manual Introduction Plot Internal Colour Plotter 2.5.1 Getting Started 2.5.2 Pens 1.1 Safety and Power Requirements 2.5.3 Pen Changing 1.1.1 International Safety Warning 2.5.4 Paper Selection 1.1.2 Grounding 2.5.5 Paper Loading 1.1.3 Live Parts 2.5.6 Internal plotting 1.1.4 Ventilation and Dust 2.5.7 External plots...
  • Page 5 5.4.2 Persistence Display Intensity Menu Reference Trace Menu Battery Unit Operation An RS423 Interface Menu 3.7.1 400to Gould 6120 or HP7475 Connections Alphabetical Summary of controls 3.7.2a 400 to IBM-PC/XT Connections 3.7.2b 400 to IBM-PC/AT Connections Appendix 1: Error Messages...

  • Page 6: Introduction

    Introduction Introduction The Gould 400 series instruments are Digital Storage More advanced features of the 400 series include a com- Oscilloscopes (DSOs). They include all the features prehensive range of menu-controlled functions. For expected of advanced modern oscilloscopes designed for...

  • Page 7: Getting Started 1.1-1.1.6

    The AC power connection is via a standard IEC, CEE 22 1.1.3 Live Parts connector and the DC power input is via the supplied 0.25" spade connector (Gould part No. 457839.) See appendix 4 for The instrument should not be operated with covers removed. polarity details.
  • Page 8 400 Operators Manual Getting Started Figure 1.2a Single Function Buttons Figure 1.2b The Toggles Figure 1.2c The Pressure Sensitive Buttons...

  • Page 9: Fuse Requirements

    400 Series Operators Manual Getting Started 1.1.7-1.4.1 CAUTION: The negative DC terminal is connected to the 1.3 Start-Up Display safety ground terminal and the instrument case. When switched on with the POWER button the instrument Care should be taken to avoid ground loops when,...

  • Page 10: Channel Selection (Off/On/Lnv)

    Getting Started 1 .4.2-1 .5.1 400 Series Operators Manual 1.4.3 Coupling (AC/DC/Gnd) (14) These buttons control the type of coupling between the input signal and the instrument. DC is the most generally applicable, and AUTO SETUP will normally set this control to DC, where possible.

  • Page 11: Aliases

    Getting Started 1 .5.2-1 .6.3 400 Series Operators Manual 1.5.2 Aliases are 20mV to 50V per division at the probe tip. See Section 3.4.1. If the Uncal light is on, then these buttons vary the An alias is a false image. The instrument is a digital oscilloscope sensitivity continuously.

  • Page 12: Add

    400 Series Operators Manual Getting Started 1.6.4 - 1.8.5 1.6.4 Add You may need to consult later sections of the manual as not all of the operating features have been discussed so far. Displays the sum, or if one channel is inverted the (10) difference, of the input signals.

  • Page 13: Advanced Features 2.1-2.1.5

    Advanced Features 2.1-2.1.5 400 Series Operators Manual 2. 1. 1 Table Useful Frequency Ranges of Coupling 2 Advanced Features Types Trigger Control Input Coupling Trigger facilities discussed here are controllable directly from hfrej 10Hz to 15kHz the front panel. For the more advanced menu-controlled 4Hz to 20M Hz facilities see Section 3.4.

  • Page 14: Trigger Delay

    400 Series Operators Manual Advanced Features 2.1.6-2.2.1 2.1.6 2.2 Capture Facilities Trigger Delay The amount of data which is acquired for display before or The capture facilities allow the traces to be frozen. after the trigger is determined by the pre or post trigger delay selected, see figure 2.1.6.

  • Page 15: Acquisition Status-Afts

    Advanced Features 2.2.2-2.4.2 400 Series Operators Manual 2.2.2), or by pressing one of the buttons labelled Trace Hold. socket input to control the Y (vertical) component. It provides an X- Y display of the data captured by the time Trace Hold:...

  • Page 16: Making Measurements

    Remove the shaft from the paper cradle and if the plotter 2.5.2 Pens has been used previously remove the plastic or Only use Gould pens - part number 04101175 for a pack of 4; 1 cardboard tube from the shaft. of each colour.

  • Page 17: Internal Plotting

    Advanced Features 2.5.6-2.5.8 400 Series Operators Manual Insert the shaft through the paper roll and fit the roll into If the plot button is pressed while the plot is in progress, the the paper cradle. plot will be aborted. Any changes to the instrument status...
  • Page 18 Advanced Features 400 Series Operators Manual Figure 2.5.8a Relative Plot Positions Figure 2.5.8b Plot Dimensions...

  • Page 19: Data Transfer

    400 Series Operators Manual Advanced Features 2.6-2.7 2.6 Data Transfer For binary transfer, the 400 will cease receiving when the amount of data indicated by the length field has been received. Trace data for either CH1, CH2, or the reference trace can be Unless the selected trace for received data is held or acquisition transferred to and from the 400 oscilloscope and a computer.

  • Page 20: The Menus 3

    400 Series Operators Manual The Menus 3 3. The Menus The menu structure is summarised in Figure 3. The numbers 1 to 9 refer to the numeric buttons used to select the particular menus and menu items (Section 3.1.1). All front panel controls remain "live"...

  • Page 21: Additional Buttons

    The Menus 3.1-3.2 400 Series Operators Manual 3.2 Control Master Menu 3.1 Additional Buttons Each entry on the Control Master Menu is also a menu, cov- ering one set of functions. The text is lined up with the numeric 3.1.1 The Numeric Buttons buttons on the side of the display.

  • Page 22: Status Menu

    The Menus 3.3 400 Series Operators Manual 3.3 Status Menu The probe gain settings are shown as x l , 3.3.4 Probe Set: This menu allows the various horizontal, vertical and trigger x10 or x100. These may be set using the Display and Trigger Menu.

  • Page 23: Display And Trigger Menu

    The Menus 3.4 400 Series Operators Manual 3.4 Display and Trigger Menu This menu controls probe ratios, maximin detection, inter- polation, and the trigger delay function. 3.4.1 Probe Ratio: An independent probe attenuation ratio can be set for each of the two input channels with successive presses of buttons 1 and 2.

  • Page 24: Display Intensity

    400 Series Operators Manual The Menus 3.5-3.6 3.5 Display Intensity 3.6 Reference Trace This menu allows independent control over the brightness of The menu provides the option of temporarily storing a trace for various display features. comparison with the two Channels. It will be lost when it is replaced with an alternative trace.

  • Page 25: Rs423 Interface Menu

    3.7.1. The instrument can be connected to a Gould colorwriter The data that is output is the complete waveforms, including 6120 or a HP7475 plotter using the Gould plotter cable part the reference trace, plus information about the timebase and number 0409-1232.

  • Page 26: Special Functions Menu

    The Menus 400 Series Operators Manual 3.8 Special Functions This menu controls the selection of auto calibration and can force the instrument to perform a full calibration. 7.2a 400 to IBM-PC/XT Connections Figure Figure 3.8 Special Functions Menu AUTO-CAL: successive presses of button I enables and Figure 7.2b 400...

  • Page 27: Post Store Master Menu

    The Menus 3.9 400 Series Operators Manual 3.9 Post Storage Master Menu The real time REAL TIME CLOCK (420 and 450 only): clock is set using buttons Menu. The entire date and The Post Storage Master Menu provides access to three further time is displayed, with one section highlighted.

  • Page 28: Save Trace Menu

    The Menus 3.10-3.11 400 Series Operators Manual 3.11 Recall Memory Menu 3.10 Save Trace Menu This menu allows you to store up to three traces, including the Traces previously saved using the Save Trace menu can be recalled reference trace, to the battery-backed memories.

  • Page 29: Plot Menu

    400 Series Operators Manual The Menus 3.12 3.12 Plot menu This menu allows the user to set the format of the plot sent to the internal colour plotter or to the external plotter via the RS423 interface. Refer to Section 3.7 for RS423 connections.

  • Page 30: Performance Checking 4.1-4.5

    Performance Checking 4.1-4.5 400 Series Operators Manual 4. Performance Checking Increase the frequency on the signal generator until the peak to peak amplitude reduces to 4.2 divisions. The aim of this section is to allow the user of a 400 oscillos- The measured frequency should be greater than 20MHz.

  • Page 31: Vertical Calibration

    Performance Checking 4.6-4.7 400 Series Operators Manual Select a suitable timebase range to view the signal and The peak to peak measurement should be 25m V to within 3% set the channel attenuator to give between two and five and the trace should be 5 divisions high to +/- 0.1 divisions.

  • Page 32: Waveform Processing 5.1-5.1.1

    400 Series Operators Manual Waveform Processing 5.1-5.1.1 5. WAVEFORM PROCESSING FUNCTIONS If any of the calculations are set to either Pulse Width or (420 and 450 only) Risetime, lines 5,6 and 7 are displayed. All the waveform processing functions are accessed through The calculation results are displayed in the three lines at the the Post-Storage Master Menu.

  • Page 33: Peak-Peak 1.2C

    Waveform Processing 5.1.2-5.1.4 400 Series Operators Manual 5.1.4 5.1.2 Peak-Peak Risetime (falltime) The display will show the peak to peak voltage difference Position the cursor and the time datum at the 0% and 100% between the most positive and negative points of the trace points of the waveform.

  • Page 34: Overshoot (Preshoot)

    400 Series Operators Manual Waveform processing 5.1.5-5.1.8 5.1.5 Overshoot (preshoot) The default percentage points are 50% and 50%. Using buttons 5, 6 and 7 these values can be changed. Button 5 selects the Position the cursor and the time datum at the 0% and 100% point to be changed, either Pulse Width Left or Pulse Width points of the waveform.

  • Page 35: Area

    Waveform Processing 5.1.9-5.2.4 400 Series Operators Manual 5.2 Trace Manipulation 5.1.9 Area This selection calculates the area bounded by the trace and the Pressing button 5 on the Post Storage Master Menu changes the cursor and datum lines. display to the Trace Manipulation Menu - figure 5.2. The trace to be manipulated is selected with the cursor and the required function with button 2, 3 or 5.

  • Page 36: Integrate Current Trace 2.5.8B

    400 Series Operators Manual Waveform Processing 5.2.5-5.3 Timebase 111mHz 4504mHz 21.3mHz 1O.3mHz 5.05mHz 2.51mHz 278m Hz 114mHz 53.2mHz 25.8mHz 12.6mHz 6.27mHz 556mHz 227mHz 106m Hz 51.5mHz 25.3mHz 12.5mHz 1. 11Hz 455mHz 213mHz 103mHz 50.5mHz 25.1mHz 2.78Hz 1.14Hz 532mHz 258mHz 126mHz 62.7mHz...

  • Page 37: Persistence/Limits Testing

    Waveform Processing 5.4-5.4.2 400 Series Operators Manual 5.4 Persistence/Limits Testing allowing it to be examined. This screen picture can be plotted, and with the internal colour plotter, the upper and lower limits Button 7 on the Post Storage Master Menu selects the Per- will be in the same colour as the reference trace to distinguish sistence/Limits Menu - figure 5.4.

  • Page 38: Battery Unit Operation 6.1

    The battery unit is electrically connected to the DSO by two rear panel cables; one for the AC supply and one for the DC The 400-107 battery unit option for the 400 series DSOs supply. provides the instruments with a fully automatic built in Nickel...
  • Page 39 Battery Unit Operation 6.2-6.5 400 Series Operators Manual DSO Battery Operation Limited battery capacity is available to operate the DSO if the AC supply is removed for any reason during fast charge. After full discharge, the battery capacity will be approximately half the elapsed recharge period.
  • Page 40 400 Series Operators Manual Battery Unit Operation 6.6 6.6 Independent Operation of DSO In any circumstances if the battery facility is not required the AC supply link from the battery unit to the DSO can be disconnected and an AC supply fed directly into the DSO. In...

  • Page 41: Alphabetical Summary

    Alphabetical Summary 400 Series Operators Manual 7. Alphabetical Summary of Controls External trigger source (connected via EXT TRIG socket). As part of AC/DC/Gnd, AC removes DC components (16) Socket for the connection of external triggers EXT TRIG from signals of between 4Hz and 20MHz. As part of hf of up to +/-250Y peak.
  • Page 42 Alphabetical Summary 400 Series Operators Manual (25) (23) Freezes the relevant trace or traces until Used in conjunction with the menus to Trace Hold Pre-Trigger pressed again. control the degree of pre-trigger. (21) This lights up when the instrument is receiving...

  • Page 43: Appendix 1 Error Messages

    Appendix 1 Error Messages 400 Series Operators Manual Appendix 1: Error Messages 15. NO X-MAG IN XY MODE If X-MAG is pressed when in X-Y mode. When something is wrong, an error message will be displayed in inverse text near the bottom of the display. Also in some 16.
  • Page 44 400 Series Operators Manual Appendix 1 Error Messages 33. X-MAG RESTORED WHEN STORED/HELD 34. O.IILS TO IOOILS/DIV, NO MAX-MIN If the traces are stored or held in ROLL mode. Then if If max/min is selected when timebase is faster than X-MAG is selected and either S/SHOT or RUN is 100μs/DIV.

  • Page 45: Appendix 2: Specification

    Appendix 2 Specification 400 Series Operators Manual In Auto the timebase free runs Appendix 2: Specification Auto/Normal Mode: when insufficient signal (20Hz - 20M Hz) is present or DISPLAY when the selected level is outside the range of the input signal.
  • Page 46 Appendix 2 Specification 400 Series Operators Manual CH1 and CH2 can be added to give the algebraic sum of The measurement cursor can be assigned to a trace Add: Cursor: the two channels. Addition is post storage and measurements made in time and voltage with...
  • Page 47 Appendix 2 Specification 400 Series Operators Manual Internal Color Plotter (420 and 450 only) Trace Manipulation Gould part No. 04101165 (8 roll pack). Paper type: Paper Filter 55 metres, equivalent to approximately 300 length: 6 selectable stages of low pass filter for each timebase plots.
  • Page 48 400 Series Operators Manual Appendix 2 Specification ENVIRONMENTAL WEI HT Full Specification: + 15°C to + 35°C. Temperature: 5.5Kg (12Ib) approx. 400: Operating:0°C to +50°C. 6.5Kg (14.2Ib) approx. 420&450: (0°C to +45°C with battery unit) 1l.7Kg (25.7Ib) approx. 400 with battery unit: Storage: -l0°C to +70°C.
  • Page 49 Appendix 2 Specification 400 Series Operators Manual Figure 400 Family Dimensions...
  • Page 50 As well as the possibility of having an internal battery unit - source supplying the higher voltage being the one from which option 107 see section 6- the 400 series DSOs can be operated current is drawn. from external DC voltages between 11.5 and 33V measured at the DSO.
  • Page 51 Appendix 4 Front & Back Pictures 400 Series Operators Manual Fig. A4a Rear View Fig. A4b RS423 Connections...
  • Page 52 400 Series Operators Manual Appendix 4 Front & Back Pictures...
  • Page 53 Fig. A4c Front Panel Control...

  • Page 54: Service Facilities

    Gould Our Sales and Service Department and those of approved service centre or distributor through whom it was supplied for distributors and agents are ready to assist you at all times.
  • Page 55 Notes...
  • Page 57 Keep these buttons pressed and turn the instrument on using the Power button. The instrument will then start up in its reset condition. This can be confirmed by noting that on power up the instrument performs a complete calibration. Amendment to 400 series Operators Manual Part Number 457403 Page 1 of 1 Part No. 460150...

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