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This HewleU-Packard product is warranted against defects in materials and workmanship for a period of � year from date of shipment. During the warranty period, HP will, at its option, either repair or replace products which prove to be defective.
....Using the HP 7090A Documentation ..• . For All 7090A Users....
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Chapter 3 Measurement Setup Operations....3- 1 The Recording ,........3- 1 Area . . . Defining the Axes/Channel Selection ......Table of Establishing the Recording Boundaries .
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Chapter Labeling Functions and Operations (Continued) .. Label Character Size ..........Changing Default Character Size ....... Table of 6- 7 Positioning PI and P2 ........Contents Rotation of I..a b els ..........Appendix A (Continued) Default Conditions and Values AppendixB Specifications ..........
Manual, and who need a convenient reference during remote applica tions of the HP 7090A. For All HP 7090A If you have just received your HP 7090A, or are just learning to use it, read Users the f ollowing portions of the Operator's Manual before attempting any front-panel or programming operations: This chapter will help you setup the HP 7090A.
Carefully inspect the HP 7090 and accessories for any � damage sustained in transit. If the unit is received in damaged condition, notify your nearest HP Sales and Support Office and file a claim with the � carrier.
5061-5080 Assorted pen and media samples Ventilation Requirements The HP 7090 uses fan-circulated air for cooling. When installing the instru ment allow at least 2 inches of clearance on all sides permit ventilation. Do not block the fan filter on the rear panel or the vent slots on the sides of the instrument housing.
The HP 7090 is shipped from the factory with the line voltage set to the proper value for the area specified as the shipment's destination. The voltage selected for the instrument is identified on the rear panel. The line voltage may be changed by qualified service personnel only_ Fuse Protection The HP 7090 is factory equipped with a line fuse appropriate to the factory...
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I <p plug rating. For use in East and West Europe, Egypt. � NEMA 5-15P HP Part Number 8120-1378; 125 V, 15 A, 1 cb plug rating. For use in Canada, Japan, Mexico, Philippines, Taiwan, Saudi Arabia, UL approved United States.
HP 7090 may create a shock hazard. � � Instrument Maintenance � Maintenance of the HP 7090 is limited to a periodic cleaning of the external surfaces, pen carousel, and air filter. Cleaning intervals will depend upon � instrument workload and environmental conditions. �...
Shipping the Instr When shipping the HP 7090, be sure it is packed in a protective carton. Keep the original packing materials and shipping carton for this purpose. If needed, packing materials and carton may be ordered through your local Hewlett-Packard Sales and Support Office.
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Include any error codes which may be displayed on the liquid-crystal display (error codes appear as <lE", followed by a code number). d. Hardcopy graphics produced on the HP 7090 (or any other materials) that might help illustrate the problem area.
Channel 3 (versus-chan3 measurements). The Buffered The HP 7090 contains three buffers (one for each channel) that are used to Recording Mode store digitized input-signal data during buffered recordings. Each buffer is capable of storing 1000 data-point values. During a buffered recording, the input buffers are filled simultaneously.
(LeO). Two data display functions are available. The input data-display function displays digitized voltage obtained directly from a selected channel's AID converter, allowing the HP 7090 to be used as a digital voltmeter. The pen position data-display function is used to •...
Major Feature Locations The following illustrations show the locations of the major features of the The illustrations are numerically keyed the accompanying 7090. descriptions. Front-Panel Features 1. Line Power Switch. Pen Carousel (removable): Holds up six pens, which are accessible to the pen holder.
Instrument Controls, Indicators, and Connectors The following list is intended to familiarize you with the location and function of the HP 7090 controls, indicators, and connectors. For a detailed explanation of any listing, refer to the appropriate section of this manual.
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A4 and A3 (with rear-panel paper· format switch set to ISO. Current paper size selection is displayed on the LCD. Used to restore the HP 7090 to local mode following a (SHIFT) LOCAL: computer·issued RLl (remote) instruction, which "locks out" the front·...
Channel Select Push buttons and Indicators (Y-Axis): Used select the channel input(s) for plotting along the Y·axis. • Channel Select Pushbutton/Indicators (X-Axis): Used to select either time or the Channel input for plotting along the X-axis. t" '"PL"'V DATA DISPLAY Selector: Accesses the INPUT or PEN POSITION functions of the data display mode.
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6. PLOT BUFFER: Used to plot the current contents of the selected channel buffer(s). "'-01 CONTROl (SHIFT) LABEL: Used to label the current setup conditions. /l�), L E l \ GRID Pushbutton: Used to draw specified grid on paper for receiving plotted measurements.
HP 7090 are designed for use with standard plotter paper. The top of each and Medium HP plotter pen is marked with a letter and number in a calor that matches the pen's ink. The letter denotes the media intended for the pen ("P" for paper;...
Slower pen speeds achieved by issuing the HP 7090 a VS instruction via the HP·IE interface - refer to the Interfacing and Programming Manual. Loading Pens and The following procedure describes how to load pens into the carousel and...
Refer to the diagram below. NOTE: 7090 The position of the paper-format switch is checked by the HP only when the power is initially turned on. If you need to change paper format, turn the power on after changing the switch setting .
Should this occu r , do not attempt to operate the instrument - notify your � HP Sales and Support Office. I!'� Following power-up initialization, the LeD displays "10.00 VOLTS" (the default voltage range for Channel and the paper size last used. In...
Loadi n g AIA4·Sue Paper Loading 8/ A3-S ize Paper The Demonstration The HP 7090 has a built-in demonstration plot that can be invoked using Plot/Confidence Test the front-panel controls. Satisfactory execution of the plot, along with suc cessful completion of the power-up self-test routine, serves as a confidence test, indicating a high probability that the HP is functioning properly.
STOP once a label function has been invoked it is drawn through completion. � • Initializing the H P 7090 The default conditions assumed by the HP 7090 during power-up can also be attained by pressing This procedure (SHIFT) INIT.
replace the old set. The following setup conditions and specifications are saved (the items listed are detailed in appropriate sections of this manual) . • • RANGE RANGE RANGE • OFFSET OFFSET OFFSET • GRID DIVISIONS/X-AXIS, GRID DIVISIONS{Y-AXIS. • TOTAL TIM time.
The Pen Controls 7090 Some of the measurement and plotting functions performed by the HP require the selection and positioning of pens. Pen control is accomplished from the front panel by using the controls described in the following paragraphs.
In addition, if is pressed to latch the pen in the "down" position and the pen is allowed. to remain motionless for approximately 65 seconds, the HP 7090 will raise the pen.
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automatically set to zero, and the clock begins running using all of the newly selected values. 6. Press the .. selector. The LCD will display the current hours and minutes, along with "HOURS.MINUTES." The decimal point flashes at one-second intervals to indicate the clock is running. (The control wheel has no affect on the hours-minutes display.) 7.
This chapter describes how to perform these measurement setup operations. Information is also provided on how to connect analog input signals "3 HP 7090. After you become familiar with the material presented here, you will be ready to perform the direct and buffered recording procedures �...
Preparing a recording area accomplishes several tasks - it defines the axes, boundaries, and scaling of the coordi nate system; matches the sensitivity and range of the HP 7090 to the input signal voltage(s);...
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(b uffers) may be selected for plotting along the Y -axis. If more than one Y-axis variable is selected for a buffered recording plot. the HP 7090 will plot selections sequentially starting with the lowest-numbered select ion.
Clipping A recording area can normally be defined that will contain all the data � , points measured by the HP 7090 during an individual recording session. However, the boundaries of the recording area are limited by the size of the �...
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� positioned. When designing a recording area, care must be taken that the required areas of the coordinate system do not exceed the hard-clip limits; otherwise data will be "clipped" when plotted. An example of clipping is demonstrated by the following illustration. The upper figure shows a recording area (white) defined by the zero and full...
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Because time is always plotted in the positive X-axis direction on the HP clipping of Quadrants Il and III need be of no concern when prepar 7090, ing recording areas for versus-time measurements. (For the recording areas described and illustrated in the remainder of this manual, assume that the zero and full-scale points have been positioned so clipping of the required Quadrants or data points does not occur.)
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To determine the exact default location of the zero point, load the HP 7090 with paper, press (SHIFT) INIT to initialize the instrument, select a pen, and press the ZERO push button. This invokes the zero-point positioning funct ion and moves the pen above the current zero point. The...
Before performing a direct or buffered recording, the duration of the recording is specified using the TOTAL TIME setup condition. In addition, the channel input range(s) of the HP 7090 is established using the channel setup conditions. RANGE OFFSET These setup conditions not only determine the physical boundaries of the recording, they also determine the scaling ofthe recording area prepared to receive the data plot.
RANGE before attempting to use offset conditions. Setting range on the HP 7090 is effectively like setting the attenuator on a voltmeter - accuracy is obtained by choosing a range setting that is suited to the input signal amplitude. If no offset is used, range should be set equal...
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� Values for maximum and minimum signal voltages (V "'IllI and Vm;,,) are 5.3 volts. A given for signal below. The largest peak voltage is V "'IllI � setting of 6.0 volts was used for RANGE to provide a range scale that is easy •...
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When performing a versus-chan3 plot, the X-axis scaling of the recording area is determined by the Channel 3 range setting (rather than by the total time setting). The Channel 3 range setting is mirrored onto the negative X-axis. This is shown by the following figure, which shows a recording area designed for plotting Channel 1 versus Channel 3.
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� RANGE " Plot Using Vmax � 5.0V Range EqlUltWIl, �IVm8x - Vmlnl ..t = O • .. �15 (-5H VOLTS � .. 5.0 O.CV � � � -5.0V - - - - I!"§ FULL l§ • l§ � " �...
The Offset Setup Default V alue: volts . Condition • •• • -100.0 to 100.0 Range of Selectable Values: volts. OFFSET setup condition should be used in conjunction with RANGE when Vmod measuring signals having a median voltage that is not equal zero OfFSET specifies a de voltage offset that is applied...
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�� �-; The illustration below shows a recording area scaled for signal (Channel 1 input) after using the range and offset values obtained from the � range and offset equations. Note that the plotted. signal uses the entire • Y-axis range. Pi�...
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.� ROunding SIGNAL A Scaling RANGE · %1 VmaK - Vmin! lo M odi f y Vmax "' VQl TS • 'h 6.0 +2.0) • ROUND Vmax UP TO 6.0 VDl TS " 4.0 VOLTS Vmin a _1 _2 VOLTS AOUND Vmin OOWN TO -2.0 VOLTS OFFSET·...
� � 1/31Vminl. Set RANGE equal to V m"" whichever is greater. � Set OFFSET equal to twice the range setting computed in step Use a • negative offset if V n>t<I is positive; use a positive offset if V � is negative. �-;...
The Grid Divisions Def ault Values: (X-axis) and (Y-axis) for AlA4-size paper. Setup Conditions (X-axis) and (Y-axis) for B/A3-size paper. Range of Selectable Values: 0 to lOO, for the X - and V-axes. The selected grid-division values specify the configuration of the quadrant grid the grid that is drawn on each selected Quadrant.
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SElect a pen after invoking the quadrant-select function, exit the function by pressing one of the setup conditions menu selectors. The • selected quadrant values are retained by the HP 7090, and the PEN SELECT , � push buttons may be used to select a pen before pressing DRAW GRID.
Rotating the Recording Area Recording areas normally oriented so the X-axis is plotted along the long length of the paper. However, an HP 7090 function enables you to rotate recording areas 90°...
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HARD-CLIP LIMITS Rototed Locations of Default Z4!ro ond Full Scale (A/A4 Paper) FULL SCALE (DEFAULTI ZERO HARD-CLIP LIMITS Rotated Locations of Zero and Default (B/Aa Full Scale Paper) FULL SCALE (DEFAULT) � ZERO (DEFAULT) After invoking the rotate function, all subsequent recording areas, grids, and plots are oriented accordingly:.
Connecting Analog Input Signals & WARNING The HP 7090 is designed for laboratory use by qualified personnel. The operator must be aware of the hazards of any external voltages that are being measured. Careful selection of external cables and probes is important based on the input signal voltage.
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CAUTION Ifno external guard connection is used, leave the guard switch in the closed ("in") position to internally connect the guard shield. Do not operate the HP 7090 without an internally or externally connected guard shield. Positions Guard·Switch...
PEN POSITION input data-display function is used to display input voltages, allowing the HP 7090 to serve as a digital voltmeter. This function is often helpful in determining the voltage range of input signals. To obtain a voltage reading and observe digitized input on the display, �...
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In the data display mode, the LeD uses three digits to display input volt ages. The selected input signal is sampled and displayed at about times :... !!!! per second. Accuracy of the displayed values is dependent upon the range •...
HP 7090 to preview buffer contents prior to plotting. The Direct Recording Mode When used in the direct recording mode, the HP 7090 functions as an X-Y or Y - T analog recorder and may be used to produce real-time plots of low...
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Grid the recording area. For direct, versus-time recordings, TOTAL TIME determines the pen sweep time. Times settings of second to 24 hours may be used. If a total time HP 7090 of less than second is selected, the will reset TOTAL TIME to second and perform a l-second recording when the direct recording is initiated.
The pen holder and paper move so that the pen is above the record ing area's zero point. The HP 7090 will then respond to the X,V input with the pen raised until the trigger is received, at which time the pen will lower and draw the plot.
INPUT CONVERTER BUFFER SIGNAL Following completion of a buffered recording, the digitized data stored in the buffers can be recalled and plotted on paper. The HP 7090 perfonns vector plotter - the data points mapped onto the recording area con·...
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� another buffered recording is made, the power turned off, or the HP 7090 is initialized. Data retained in the buffers may be recalled again and again � create multiple plots. In addition, the dimensions of recording areas used for plotting can be altered for different plots by repositioning the zero and �...
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� Minimum To accurately record a waveform so that it may be reconstructed from � stored data, the input signal must be sampled often enough for its charac Sampie Rate • i! � teristics to be apparent from the sampled data. This is illustrated below for a signal of frequency {(black line).
Performing a Buffered Recording (V ersus Time or V ersus Chan3) The following steps may be used to perform a versus-time or versus-chan3 buffered recording: Establish the recording area scaling as follows. (Refer to Chapter 3 for Scale Ihe Recording Area details.) for all channels to be recorded and plotted.
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� buffer on the after a buffered recording has been performed. The HP 7090 can also mark and label the coordinates of selected data points. � ; To display and label buffered data points, perform the following steps: I!' �...
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As the buffer contents are aecessed, the pen is moved over the corres ponding data points on the recording area, and the Y -axis coordinates are displayed on the LeO. Three significant figures are used to display the values. Hold down the FAST push button in conjunction with a cursor control to move through the buffer Quickly.
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Displaying Buffer SCOPE OUT connectors (located on the right side panel) are provided for Contents on connecting the HP 7090 to an oscilloscope, enabling you view buffer 1! 2 Oscilloscope contents on the scope. This feature is used to preview stored wavefonns �...
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To connect an oscilloscope the HP 7090, refer the diagram below. BNC connector to the Channel A (vertical) input of the Connect the VERT oscilloscope. Connect the 8NC connector the Channel B (hori HOAIZ zontal) input of the scope. Oscilloscope Conll c ctions �...
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Output from the buffers is available for viewing on the scope only when the 7090 is idle. you invoke any function on the HP 7090, the scope display will temporarily vanish until the selected function has been completed. Viewing Buffer Contents Oscilloscope.
. iiIj of data. You can use the front-panel controls of the HP 7090 define a trigger by specifying conditions that must be met before triggering occurs.
Pre-trigger time selections are ignored by the HP 7090 for the manual trigger mode. The Trigger Mode Seleclor and Indicators 4BO E TRIGGER MODE TI NAL...
Channel ! input to trigger a record ing. After specifying the requirements and initiating a trigger search, the HP 7090 continuously monitors the Channel ! input until the signal meets the requirements, at which time triggering occurs. Although triggering is...
Above-Level and The above-level option permits positive-slope triggering at a voltage speci· Below-Level fied by the TRIGGER LEVEL setup condition. The trigger generated when the Triggering Channel ! input signal rises or above the trigger level value. Refer to the following diagram.
� Examples of Below-Level Triggering ..,.. :g (f NEGATIVE ..SLOPE " g TRIGGER lEVEL VOLTAGE VALUE - - - - - - - : � TRIGGERING OCCURS � g � g ! � NEGATIVE SLOPE ! � VOLTAGE VALUE - - - - - -...
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TRIGGER WIDTH you initiate a trigger search while the indicator is blinking, RANGE the HP 7090 will internally set the trigger width value to 2 X (The RANGE 1. internally set value will not be displayed, however.) .�...
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Inside-Window The inside-window option uses a window defined TRIGGER LEVEL Triggering setup conditions, as described for the outside-window option. TRIGGER WIDTH After initiate trigger search, the Channel l input signal is itor compared with the trigger window limits . .!"! For the direct recording mode, triggering occurs when the Channel input...
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I!! i Because the buffers contents are fill e d following the required sequence of inside-window data, post-trigger times are not applicable and, if specified for a buffered recording, are ignored by the HP 7090_ Pre-trigger times may be specified, however.
Trigger Time applications. For example, by selecting an appropriate post-trigger time, you can :set the HP 7090 to begin recording data at a specified time after the occurrence of a trigger. Pre·trigger times can be used to capture data in the...
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The selected pre-trigger value should not exceed the value specified for total time. · Exceeding the total time causes the POST TRIGGER/PRE TRIGGER i cator to blink, and the HP 7090 will internally set the pre-trigger value • your specified TOTAL TIME value.
• :!ij The front-panel measurement setup conditions. When interfaced with a host computer or controller, the HP 7090 can also � be used as a digital plotter to produce custom labeling or other types of graphics output. Refer to the Interfacing and Programming Manual for :!iI •...
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PRINT TRIG TIME "SHIFI'" is displayed on the LCD before pressing the push button.) The HP 7090 will print the time at which the most recent trigger ---' i! � was received, as shown below. (If no trigger time has been received since power-up, the HP 7090 will print the time of power-up.) A given trigger time...
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shown below. Note that the label consists of five lines of annotation, allow enough labeling space below the pen position. • 10.5) Area Required for the Setup Conditions Label. - - - - - - - - - - - - - - - - - - - - - -- - , � '\1' - The defauJt label dimetlSwns p�:: : ����...
Positionin g After printing any of the labels described previously, the 7090 performs Multiple Labels a carriage return and line f eed. automatically positioning the pen so that • invoking a subsequent label function will place the label directly beneath the first.
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Default. Locations of HARD·CUP LIMITS PI and Paper) P2 (AIA4 l": DEFAULTP2 • • , � •• DEfAULTP1 � Default l�ocalioll8 of HARD-CLIP LIMITS PI and Paper) P2 (lJ/A3 I DEFAULTP2 •• DEFAULTP! . -..-J The width of the characters used for labels is 0.75% of the horizontal dis tance between PI and P2.
the vertical distance between These proportions, when applied to default result in the default character sizes shown below (actual size). Default Character Size8 � OEFAUlT DETERMINES CHARACTER � ; HEIGHT I DEFAULT • _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ DE TE RMINES CHARACTER T R I G T I ME,...
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Reducing Character Size OEFAUL by Moving CHARACTER SLZE � TR I G T I ME, 12, 04, 46 OEFAULT TRIG TIME. 04. 46 REDUC TION Tlue Tt ... 1.04048 REOUCTION "' EFAULT PT In addition to reduction, default character size can be enlarged slightly by moving PI and P2 to their respective corners of the hard-clip limits.
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pressing the pushbutton. This turns off the indicator and establishes the new P I position, allowing the pen cursor push buttons to be used without affecting PI. NOTE: Always exit the PI positioning function to prevent accidental repositioning of PI .
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� � Rotated Locations of HARD -CLIP LIMIT S Default PI and P2 ( B / A3 Paper) DEFAULT P2 � .!!l c!!!I � � � ..� � DEFAULT Pl � � As a result of rotation, the normal height-to-width ratio is changed so that �...
Appendix A Default C ondit ions and Values The following values and front-panel selections are assumed HP 7090 following power-up or front-panel initialization. In addition, PI, P2, and the zero and full-scale points are located at their default positions. Condition...
� � Appendix B • Spe cifi cations* � � � The following provides a summary of the functioning characteristics and � 7090: electrical accuracy of the Inputs Number of channels � Type of input floating, guarded 5 m V 100 V full scale Sensitivity Zero offset...
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Dynamic Performance Slewing speed (NOMINAL): • Direct record mode 127 cm/s in./s) Plotting mode 75 cm/s (30 in./s) Acceleration (NOMINAL) 196 m/s2 (2 g's) constant Bandwidth (-3 dB) 3 kHz for all full-scale ranges � 20 mV 2.6 kHz for all full-scale ranges <...
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� Electrical Accuracy Tables (Continued) ((It Electrical Accuracy Constant Percent Reading Temperature Coefficient from Degrees C Inaccuracy Inaccuracy Per Degree C Range Per Degree C ±O.OO22mV 5 mV l O mV ±O.OO28 m V ±O.0040 m V 20 mV SO mV ±O.0076 mV l OO mV ±O.Ol36 mV...
1 1 in. (ANSI A) � 297 X 420 mm (ISO A3) 17 in. (ANSI B) ill! Programming HP-IS control of all recorder and plotter functions ...; Software lockable front panel � Scope Output Allows use of X-Y oscilloscope to preview buffer contents Connectors: two BNC.
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Real-time Clock Functions: second, minute, hour, day, year Controls: front-panel set, battery backup Environmental Operating humidity: 5-95% (at 40' C) Operating temperature: 0_550 C Storage temperature: -40_750 C Power Requirements 100, 120, 220, 240 V--10%, +50/0 Source: Frequency: 4S-66 Hz Consumption: 140 W Size Height: 205.5 mm (S.l in.)
HP 17090A, B. or C measurement graphics software Option 630, 3.5-in. disc Option 655, 5.25-in. disc The following table lists the operating system, memory, and equipment that are needed to use the HP 17090 software with the HP 7090. � Available RAMI Operating Applicable HP 17090...
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Mpplicable when equipped with BASIC 4.03 and an HP 982l3C sBASIC 4.03 i s required when the computer is equipped with HP 98203C keyboard. required equipped when the computer is 7'T'he HP 46083A knob is with either HP 46020A keyboard.
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:111 � Want a complete list of Hewlett-Packard • supplies and accessories? Order the Hewlett-Paekard Computer User's Catalog (5953-2450) from your local HP Sales and Support Office, or by writing: Hewlett-Packard San Diego Division 16399 West Bemardo Drive CA 92127-1899...