-40%

TEKTRONIX 485 OSCILLOSCOPE, 43 FAIL PRONE CAPS REPLACED, CALIBRATED, WARRANTEED

$ 246.57

Availability: 10 in stock
  • Restocking Fee: No
  • MPN: Does Not Apply
  • Modified Item: No
  • Maximum Real-Time Sampling Rate: ANALOG
  • Return shipping will be paid by: Buyer
  • Maximum Bandwidth: 350 MHz
  • Number of Channels: 2
  • Digital Oscilloscope Resolution: Does Not Apply
  • Features: With 1.8 GB Service and Maintenance Manual on DVD
  • Refund will be given as: Money back or replacement (buyer's choice)
  • Brand: Tektronix
  • Country/Region of Manufacture: United States
  • All returns accepted: Returns Accepted
  • Custom Bundle: No
  • Oscilloscope Type: Analog Oscilloscope
  • California Prop 65 Warning: Please, don't pet the rattlesnakes!
  • Model: 485
  • Condition: CLEANED, REPAINTED, REFURBISHED, CALIBRATED, WARRANTEED AND WELL PACKED
  • Item must be returned within: 14 Days

    Description

    TEKTRONIX 485, 350 MHz, ANALOG OSCILLOSCOPE, 43 HIGH FAILURE RATE CAPS REPLACED
    (Tantalum and electrolytic)
    CALIBRATED -- WARRANTED
    The 485 is an Analog, general purpose, environmentalized, high performance, portable, wide band oscilloscope
    which has a dual channel vertical amplifier with selectable input impedance. The bandpass is DC to 350 MHz
    with 50 Ohm input impedance and DC to 250 MHz with the 1 MOhm input impedance. The 485 has a 1 nS/DIV to
    .5 SEC/DIV sweep rates, stable triggering to well beyond 400 MHz and calibrated X-Y capabilities. The Delayed
    sweep has calibrated delay time, can be triggered after delay and can be displayed with the intensified
    main sweep in an alternate sweep switching display. Additional features are X1, X10 and X100 probe scale factor
    readouts, 8 DIV (vertical) X 10 DIV (horizontal) graticule area, small spot size and high writing rate. A 20 MHz
    bandwidth limiter, 1 MHz and 1 KHz fast rise calibrator and auto focus are also included. The 50 Ohm input is
    automatically disconnected from excessive input voltage applications. An external trigger view is also provided.
    The 485 will operate from 90 to 136 VAC in the 115 VAC mode or 180 to 272 VAC in the 220 VAC input mode, with
    input frequencies from 48 to 440 Hz and at elevations up to 15,000 feet.  Let
    me add one more item.  I am looking for a CRT for a Tektronix 576, if you have one to part with I am sure we could
    reach some agreeable mutual
    trade.
    PRICE IS 7
    (0 for the oscilloscope, for professional packing)
    THIS IS A Buy-It-Now SALE
    YOU ARE BIDDING FOR THE COMPLETE OSCILLOSCOPE PACKAGE
    THIS PACKAGE CONSISTS OF THE OSCILLOSCOPE,
    THE 1.8GB SERVICE MANUAL ON A DVD DISK,
    A XEROX COPY OF THE ORIGINAL OPERATIONS  MANUAL,
    TWO NEW X1-X10 MATCHED 100MHz PROBES
    < ===Time flies like an arrow, is your bid in yet?==<<
    THE OLDER TEKTRONIX OSCILLOSCOPES
    We admittedly live in a throw-away society. If we happen to have a VHS device and it goes bad we immediately think
    of purchasing a new one rather than repairing the old one. I think this is because the industry advances so rapidly
    that it does not pay to repair an old VHS device since the cost of a new one, with new features and technology,
    approximates the repair costs of the old one.
    Such is certainly not the case with the older Tektronix Oscilloscopes. The 4XX series of Tektronix Oscilloscopes
    has easily repairable circuits and technology that is as vibrant today as it was the day it was designed almost 20
    years ago. The oscilloscopes of the older Tektronix 4XX series are a joy to use . The analog response is around 1
    to 3 nS, a figure that deserves respect even by today's rigid standards of performance. The crisp FET and tunnel
    diode triggering and bright display of these older Oscilloscopes will stand up to the best that are on the market
    today. Sure, the band pass of some of the newer Tektronix Oscilloscopes exceeds that of the older 4XX Oscilloscopes,
    but just how often do you encounter a signal over 300 MHz on your test bench that you must view?
    The older Tektronix Oscilloscopes did not use Large Scale Integrated (LSI) circuits. Almost all the circuits use
    transistors that are easy to obtain and are in sockets. Most of the transistors used in the Tektronix 4XX Oscilloscopes
    are available for about a dime each today. Trouble shooting the older Tektronix Oscilloscopes is fairly easy as
    Tektronix published outstanding manuals that makes trouble shooting a dream. All the circuits are DC coupled so trouble
    shooting is merely a matter of taking DC readings at critical points and comparing the measurements to the values
    published in the service manual. The next generation of Tektronix Oscilloscopes after the 4XX series was the 2XXX series.
    The 2XXX series uses a lot of LSI circuits, notably in the horizontal and vertical outputs. These LSI devices are subject
    to high power dissipation and do not hold up well. Replacement of these LSI devices is practically out of the question as
    Tektronix no longer supports the 2XXX series of Oscilloscopes and the supply of these Tektronix made replacement parts
    has pretty well dried up.
    After the 4XX series was discontinued in the late 1990s, Tektronix began building oscilloscopes with many custom VLSICs
    (Very Large Scale Integrated Circuits), shoddy mechanicals,  and overall lower quality. The 4XX series of Tektronix
    oscilloscopes are the last oscilloscopes that can be fixed by the average electronic technician using readily available,
    off the shelf components. These oscilloscopes were once fairly common, but are now becoming rare.  It will soon be hard
    to find an American made metal chassis analog oscilloscope of this quality in excellent condition.
    So if you are considering a quality Oscilloscope, with a proven track record of performance, I urge you to consider
    a quality Tektronix Oscilloscope like a 485.  In 50 years of working with Tektronix Oscilloscopes I have found them to be
    the instruments on the market with the best design. All the resistors are power over-rated by at least 100%; voltage
    ratings on filter capacitors is at least double the voltage applied to them; diode breakdown voltage is usually double
    the applied voltage. In short, the 4XX series of Oscilloscopes was designed to give many years of faithful service and
    that service period has yet to expire.
    FEATURES OVERVIEW
    Calibrated to Tektronix specifications, power on aged for 100 hours and calibration rechecked.
    Unlimited warranty for 30 days.
    No questions asked return within 5 days of receipt if not delighted.  Restrictions apply, please read section       on Return Rights.
    Front panel switch selectable input impedances of 1 MOhm or 50 Ohm.
    350Mhz Bandwidth (1 nS risetime in 50 Ohm input impedance), 250 MHz at 1 MOhm input impedance.
    1 nS/DIV to .5SEC/DIV calibrated sweep ranges.
    5 mV/DIV to 5V/DIV calibrated Vertical Sensitivity.
    Very fast, stable patented FET and tunnel Diode triggering functional to well beyond 400 MHz.
    Very high timing accuracy: under +/-1% on center line even at 1 nS/DIV.
    A/B Trace Separation Control and Separate B Intensity Control.
    Extra high acceleration voltage (21 KV) used in CRT to give higher writing rates.
    Distributed vertical deflection plates with characteristic terminations for maximum frequency response.
    Rarely used controls located on rear apron to reduce front panel clutter (FOCUS, ANSTIG, TRACE ROTATION).
    1X - 10X - X100 auto probe detection.
    Built-in power supply for two P6202 FET active probes (probes not supplied).
    Very small (10"X16") footprint, takes up minimum test bench space.
    THE REFURBISHING PROCESS
    The refurbishing process I have developed is rather extensive. The procedues used are as follows:
    Receive the oscilloscope and inspect every PCB and mechanical component. Replace worn or frayed power cord.
    Remove all the hardware from the case. Completely clean it, remove all traces of labels.
    Sand the case, mask unpainted surfaces and spray paint it the factory Williamsburg Blue color.
    Clean the instrument. I use compressed air as I have had bad results cleaning with water based products.
    Remove, clean and inspect all the knobs and the set screws, replace if necessary.
    Replace damaged legends with decals I made.
    Repair or replace damaged knobs. Replace any cracked set screws.
    Remove and clean the faceplate. Clean all the surfaces around the faceplate.
    Clean switches with contact cleaner. Test every front panel potentiometer for functionality and smooth rotation.
    Replace all tantalum capacitors that have a ratio of Vr/Va under 2. See following description.
    Remove the vertical attenuator assembly and clean the switch surfaces and re-tension the fingers.
    Repair the instrument if necessary. I use only new components when repair is necessary.
    Tap on every adjustable component and replace component if intermittent.
    Calibrate to factory specifications using Tektronix NIST traceable test equipment.
    Age for 100 hours (5 days) after calibration with power on but intensity at minimum.
    Recheck calibration to Tektronix specifications after the aging process is complete.
    Reassemble the instrument and associated hardware and give it a final post assembly test.
    When I ship the completed instrument I double bubble wrap it and ship in a sturdy carton.
    Tektronix used tantalum capacitors beause they were thought reliabile, stable and were relatively inexpensive. Over
    time, Tektronix found out that the failure rate was unacceptably high if tantalum capacitors were used where the ratio
    of the rated capacitor voltage, Vr, divided by the applied voltage, Va, is under 2. If the Vr/Va ratio is equal to two
    this means that the rated voltage on the capacitor is twice the voltage applied while operating. There are a total of 41
    tantalum capacitors used in the 485 that have a Vr/Va ratio under 2.0. All these 41 capacitors have been replaced by new
    modern components with a Vr/Va minimum ratio of 3, a maximum ratio of 12.5, and a tolerance of +/- 20%, the same
    tolerance as the original tantalum units. All the capacitors were replaced prior to calibrating the instrument.
    It has recently come to my attention that the two storage capacitors, C1822 and C1823, located on the A14 inverter
    board, while not Tantalum units, have a higher than acceptable fail rate.  Both these caps are 430uF, 200V units.  I am
    now replacing every 200V storage cap in this location with 560uF, 450VDC model SMH units.  The fit is perfect, the
    performance outstanding and, I feel, the additional expense and labor associated with the modification enhances the
    overall reliability of the instrument.
    This brings the overall total of replaced capacitors, both Tantalum and electrolytic, to 43.
    Number of capacitors replaced by assembly (A#) number and name
    Aseembly Number/Name
    Number Replaced
    A3 Channel 1 vertical preamp
    1
    A3 Channel 2 vertical preamp
    1
    A7 Vertical Amplifier Board
    11
    A8 A Trigger Board
    1
    A10 Sweep Board
    5
    A11 Horizontal Amplifier
    5
    A13 Power Board
    17
    A14 Inverter Board
    2
    Total
    43
    VERTICAL
    The 485 features dual calibrated vertical amplifiers each with deflection factors from 5 mV/DIV to 5 V/DIV in 10
    steps of 1-2-5 sequence accurate to within 2%. The 485 changes the display of the vertical sensitivity when X1,
    X10 or X100 probes are used. LED's light up automatically behind the correct vertical sensitivity setting when
    the probes are changed. The bandpass of each channel is DC to well over 350 MHz in the 50 Ohm input impedance
    mode and DC to 250 MHz when in the 1 MOhm input impedance mode.
    The two traces may be viewed independently using either ALT or CHOP (alternate or chopped) switching; or
    algebracially added together. A separate switch is used to change the polarity of CHANNEL 2 so the oscilloscope
    may be operated differentially in the ADD vertical mode.  The vernier vertical gain control may be preset to a
    desired value and disconnected by depressing the center knob on the VOLTS/DIV control. A front panel pushbutton
    will limit the bandpass to 20 MHz if desired.
    HORIZONTAL
    The horizontal deflection system consists of two sweep circuits. These are the MAIN and the DELAYED sweeps. Both
    sweeps feature calibrated sweep speeds from 1 nS/DIV to .5  S/DIV in 27 calibrated steps also of a 1-2-5 sequence.
    The B or DELAYED sweep may be used alone, used to intensify portions of the A or MAIN trace or be used to sweep
    at the B rate after an amount of time set on the DELAY TIME POSITION control.  A TRACE SEPARATOR control is used
    to adjust the position of the DELAYED trace on the screen.
    TRIGGERING
    The 485 features the famous rock steady FET and tunnel diode triggering used on all the higher priced Tektronix
    oscilloscopes. This oscilloscope will trigger faithfully from DC to well over 400 MHz on vertical deflections as
    small as 0.4 DIV. Each sweep, A and B, have independent trigger controls variable over the complete span of the
    vertical display waveform.
    DELAYED SWEEP
    The DELAYED or B sweep uses the ALT feature where the first few divisions, determined by the setting of the DELAY
    TIME POSITION control, are swept at the A rate and the intensified portion of the A trace is swept out over the full
    10 DIV on a separate trace which may be positioned by the operator to be above or below the original A trace.
    DISPLAY
    The display pictures show one with two waveforms and one with a single sine wave. The single sinewave is swept at
    1 nS/DIV; 2 DIV per cycle at 1 nS is 500 MHz, try that on your Heathkit scope. The two waveform picture is the output
    of a Tektronix 184 Time Mark Generator and a Tektronix 191 Constant Amplitude Oscillator.
    CALIBRATION AND AGING
    This oscilloscope has been thoroughly and meticulously cleaned inside and out, a new air filter is installed and the
    case is spray painted the Williamsburg Blue Tektronix color. Then it is calibrated to Tektronix specifications using
    NIST traceable Tektronix calibration equipment.  This oscilloscope is then powered on and aged for a minimum of 100
    hours (5 days straight) at the end of which time the calibration is rechecked again to Tektronix specifications.  This
    aging process is performed to insure the buyer that this oscilloscope will be stable and reliable.
    THE SERVICE MANUAL
    I have personally scanned in the entire 485 service manual using a Epson GT-15000 11" X 17" flatbed scanner.  The 17
    files are sent on a DVD+ disk. All data came from Tektronix Publication 070-1193-00.
    Scanned file name and size.  All files are .PDF
    File Name
    Size (in bytes)
    485 Operations Manual
    15,985,312
    A Trigger Generator, Sheets 6,7, All 11X17"
    1,007,395
    B Timing Sws, Hor Gen, Sheets 8-11, All 11X17"
    1,819,867
    Cabinets and Accessories, All 11X17"
    211,822
    Calibration
    370,555,581
    Circuit Description
    237,959,902
    Logic, Inverter, Sheets 12-14, All 11X17"
    1,476,387
    Maintenance
    294,515,808
    Operating Information
    61,649,180
    Power Supply, Cal & Fan, Power Dist, Sheets 15-17, All 11X17"
    672,073
    Rack Mount
    99,748,197
    Replaceable Elec Parts
    743,216,577
    Replaceable Mech Parts
    1,316,132
    Replaceable Mech Parts, Fig 1,2, 11X17"
    800,771
    Specifications
    442,406
    Vertical, Sheets 1-3, All 11X17"
    1,353,210
    Vertical Switching, Sheets 4,5, 11X17"
    1,862,341
    Total
    1,834,402,321 Bytes in 17 Files
    WARRANTY
    This fine oscilloscope carries an unlimited 30 day warranty after receipt by the buyer providing there is no indication
    of damage and the calibration sticker has not been tampered with.
    RETURN RIGHTS
    This oscilloscope carries a no-questions asked 5 day after receipt return policy providing the buyer agrees to pay all
    expenses and that the calibration sticker is intact. Since the oscilloscope will be out of my hands for an extended
    period of time I would not feel comfortable reselling this instrument without re-calibrating it.  Therefore, before
    accepting any returned oscilloscope back for a refund I would have to charge the original buyer a recalibration fee.
    A refund check, minus shipping, handling and recalibrating fees, will be issued within five days to the original
    purchaser only. The return calibration fee would be waived if the oscilloscope proved defective after being returned
    to the seller.
    EXPORT DOCUMENTATION
    If the purchaser of this fine Oscilloscope resides outside of the USA then a BIS-711 form must be completed and
    received by the seller before the item can be shipped.  This form, published by the Department of Commerce, Bureau of
    Industry and Security, states that the purchaser will not transfer this item to any parties or countries currently on
    any of the BIS exclusion lists.  This form may be downloaded at
    "https://www.bis.doc.gov/index.php/component/rsform/form/21-request-bis-forms".
    If you live outside of the USA and cannot, or will not, submit this government form then do NOT BID on or try to
    purchase this item.
    PACKING AND SHIPPING
    The selling price includes a fee for professional packing. USPS Priority is the preferred shipping media for
    shipments in the CONUS but, I would be happy to ship UPS or DHL, buyers choice but might be at extra expense.  I will
    also ship on your account or, you can snail mail me a preapid shipping label. Scanning and e-mailing a prepaid
    shipping label does not work as the label cannot be reliabily read by the shipper. Shipping on your account can only
    be to your registered location, not a secondary location. Overseas shipping will carry additional shipping fees. I
    use USPS Priority International for all overseas shipping. However, there is no tracking number available when using
    USPS Air Parcel Post.
    The estimated shipping fee posted by eBay is far from accurate. Buyer should include sufficient postage to ship a 31
    pound carton measuring 27"X18"X18" from Tustin, California, 92780 to the buyer's location. Buyer can contact me through
    the eBay correspondence system.  I would be happy to assist the buyer in any way possible.
    I strongly suggest that the buyer request an invoice be sent which would state the purchase price and exact shipping
    fees to the buyer's location.  I do not mark up any shipping fees, if excessive shipping fees are remitted thay will
    be returned via PayPal when the item ships.
    PAYMENT AND LOCAL PICKUP
    I accept cashiers checks, PayPal and personal checks. Checks will delay shipping until check clears my bank.  Credit
    cards are not accepted, unless through PayPal. Local pickup in Tustin, Orange County is encouraged and at no
    additional charge. Cash is accepted only for face-to-face pickup at my shop.
    COSMETICS
    Mechanically this oscilloscope is in beautiful condition. The case has been freshly spray painted with a coat of
    Tektronix Williamsburg blue paint. All the knobs, controls and mechanical components are in excellent condition.
    ACCESSORIES
    The oscilloscope does not come with the front mounted travel cover or top mounted equipment pouch. I am currently out
    of the front mounted travel covers. Some of these items are being offered on some of my other auctions.
    Contact me by sending me a note via eBay mail requesting information on optional accessories.
    TRADE IN
    I will accept a non-cannibalized Tektronix 465 to 485 oscilloscope(s) in trade towards this oscilloscope.
    Contact me by sending me a note via eBay mail for additional information on trade-ins.
    CALIBRATION AND SERVICE
    If you have a Tektronix 4XX (465, 465B, 468, 475, 475A or 485) oscilloscope that needs repair or calibration why not
    drop me a note, via eBay mail, and lets chat about your problem. I would be happy to offer suggestions about
    calibrating your instrument.
    RESERVATIONS
    Seller reserves the right to reject bids from private or negative feedback bidders.
    FEEDBACK
    I take my feedback rating very seriously! I would appreciate the courtesy of you contacting me should there be a
    problem with any item purchased. I will make every attempt to resolve the issue as soon as possible to the buyers
    satisfaction.
    I always leave positive feedback for buyers when their payment is received. Your feedback, once the transaction is
    completed, would be greatly appreciated. Buy with confidence from a seller that stands firmly behind every oscilloscope
    that is sold. I believe that over 2000 feedbacks with never a negative one after 21 years on eBay speaks for my
    reliability.
    BIDDING INFORMATION
    Remember, your bid is your word, please bid responsibly.
    TEKTRONIX 485 SPECIFICATIONS, source Tektronix Publication 070-1193-00
    VERTICAL               DEFLECTION (2 IDENTICAL CHANNELS)
    Bandwidth*               and Rise Time (at all deflection factors from 50
    W
    terminated source), -15°C to +35°C
    50
    W
    Input  Impedance
    1  M
    W
    Input Impedance
    DC               to 350 MHz, 1 nS
    DC to 250 MHz, 1.4 nS
    *Measured at -3               dB. Bandwidth may be limited to approximately 20 MHz by BW LIMIT switch.
    Lower -3 dB               point, AC coupling 1X probe: 10 Hz or less. 10X probe: 1 Hz or less. 100X  probe: < 1 Hz
    Deflection Factor at BW
    5 mV/DIV (1X Probe) to 500  V/DIV (100X Probe)
    1-2-5 sequence,               accurate ± 2%. Uncalibrated, continuously variable between steps and to               at least 12.5 V/DIV. LED's at edge of V/DIV knob skirts indicate correction deflection factor for 1X, 10X and 100X probes.
    Display Modes
    CH 1, CH 2 ADD               (normal and inverted), ALTernate, X-Y, CHOPped - approximately 1 MHz rate.
    50
    W
    Protection
    Internal detection circuitry automatically disconnects excessive signals of up to 50 V.  The disconnected condition is indicated by RESET lights and has a manual reset.
    Maximum Input Voltage
    50
    W
    Disconnect occurs for voltages  that exceed approximately 5 V RMS continuous or 0.1 Watt-second for instantaneous  voltages of 5 V to 50 V.
    CMRR
    ADDed mode with CH 2  INVerted.  At least 10:1 at 50 MHz for 8 DIVision after adjusting CH 2 gain for best CMRR at 50 KHz and 20 mV/DIV.
    Automatic Scale Factor
    Probe tip               deflection factors for 1X, 10X or 100X coded probes are indicated by three               readout LED's behind V/DIV knob skirts.  LEDs are off when channel not               displayed.  Ground reference display selectable at probe (when DC               coupled).
    Maximum Input Voltage, 1 M
    W
    Input  Impedance, AC or DC.
    250 V (DC + peak AC); 500 V (p-p AC at 1 KHz or less)
    Delay Line
    Permits viewing               leading edge of displayed waveform
    HORIZONTAL               DEFLECTION
    Time Base A and B
    1 nS/DIV to               0.5 S/DIV in 27 calibrated steps of 1-2-5 sequence.
    Time Base A               and B Accuracy, Center 8 Screen Divisions
    TIME/DIV Switch  Setting
    +15°C               to +35°C
    -15°C               to +55°C
    1 nS/DIV to 20 nS/DIV
    ±               2%
    ± 4%
    50 nS/DIV to 0.1 S/DIV
    ±               2%
    ± 4%
    0.2 S/DIV to 0.5 S/DIV
    ±               3%
    ± 5%
    Horizontal Display Modes
    A, A INTENsified during B  delayed, ALTernate display of A, B delayed.
    CALIBRATED               SWEEP DELAY
    Delay Time Range
    0 to 9.9 times the DELAY TIME POSITION setting of 10 nS/DIV to 0.5 S/DIV
    Differential               Delay Time Accuracy (+15°C to +35°C)
    TIME/DIV Setting
    Accuracy
    10 nS/DIV and 20 nS/DIV
    ± 1%
    50 nS/DIV to 1 mS/DIV
    ± 0.5%
    2 mS/DIV to 0.5 S/DIV
    ± 1%
    Jitter
    < 0.005% (1 part or less               in 20,000 of full scale plus 0.2 nS).
    TRIGGERING A               AND B
    A Trigger Modes
    NORMal TRIG, sweep               runs when triggered: AUTOmatic TRIG, sweep runs in the absence of a               triggering signal and for signals below 20 Hz: SINGLE SWEEP sweep runs               one time on the first triggering event after the rest selector is               pressed. LED lights indicate when sweep is triggered and when single               sweep is READY.
    B Trigger Modes
    B RUNS AFTER DELAY TIME Starts automatically at the end of the delay time.  INTernal, runs when  triggered following the A sweep delay time.
    A Trigger HOLDOFF
    Adjustable               control permits a stable presentation of repetitive complex waveforms.
    Time Base A               and B Trigger Sensitivity
    Trigger Mode
    To               50 MHz
    At               350 MHz
    DC Int
    0.3               DIV deflection
    1.5               DIV deflection
    DC Ext
    20               mV
    100               mV
    AC
    Signals below 16 Hz are attenuated.
    LF REJect
    Signals below 16 KHz are attenuated.
    HF REJect
    Signals below 16 Hz and above 50 KHz are attenuated.
    Jitter
    Less than 0.1 nS at 350 MHz and 1 nS/DIV.
    External Inputs
    1 M
    W
    paralleled by approximately 20 pF.   Maximum input voltage 500 V (DC + peak AC).
    Level and Slope
    Internal,               permits selection of triggering at any point on the positive or negative               slope of the displayed waveform.  External level adjustment through at least         ±0.5 V for either polarity (±5 V for EXT/10).
    X-Y               OPERATION
    Full-Sensitivity X-Y (CH               1 Horiz, CH 2 Vert)
    5 mV/DIV to 5               V/DIV in 10 calibrated steps of 1-2-5 sequence, accurate within 2%.  Gain  adjustable at front panel.
    DISPLAY
    Crt
    4 inch rectangular tube;  8 X 10 DIV (0.8 cm/DIV) display area.  P31 phosphor standard; P11 optional. 21 KV               accelerating potential.
    Graticule
    Internal,               no parallax; variable edge lighting; markings for measurement of rise               time.  Graticule is dark with illumination off.
    Auto Focus
    Automatically  maintains beam focus for all intensity settings.  (Intensified zone and EXT  Z axis are not Auto-Focused).
    External Z-Axis
    Risetime 15 nS.  Input  R=500
    W
    .  +0.2 V (DC to 20 MHz) blanks trace of average intensity.  +2 V (DC to 2 MHz) blanks maximum intensity trace.
    ENVIRONMENTAL               CHARACTERISTICS
    Ambient Temperature
    Operating:
    -15°C to +55°C
    Storage:
    -35°C to +75°C. Filtered forced air ventilation               is provided.
    Altitude
    Operating:
    to 15,000ft; max allowable ambient               temperature decreased by 1°C/1000 ft from 5000 to 15,000 ft.
    Storage:
    to 50,000 ft.
    Vibration
    Operating:
    15 minutes along each of the three axes,  0.06 cm (0.025 in) p-p               displacement (4 g's at 55 Hz) 10 to 55 to 10 Hz in 1 minute cycles.
    Humidity
    Operating and               Storage:
    5 cycles (120               hours) to 95% relative humidity as specified in MIL-E-16400F (par               4.5.9 through 4.5.9.5.1, class 4).
    Shock
    Operating and               Storage:
    30 g's 1/2 sine,               11 mS duration, 2 shocks per axis in each direction for a total of 12               shocks.
    OTHER               CHARACTERISTICS
    Two-Frequency  Fast-Rise Amplitude Calibrator
    Condition
    +15°C to +35°C
    -15°C to +55°C
    5 V amplitude into 1 M
    W
    load
    0.5%
    1%
    0.5 V amplitude to 50
    W
    load
    1%
    1.5%
    50 mA amplitude to optional BNC accessory current loop
    1%
    1.5%
    Selectable FRequency of 1 MHz and 1 KHz
    0.25%
    0.5%
    Dimensions (Portable Model Only)
    in
    cm
    Height
    6.6
    16.8
    Width (With Handle)
    12
    30.5
    Depth (With Front Panel Cover, Handle Retracted)
    14
    35.6
    Depth (Handle Extended)
    20.6
    52.3
    Weights (Approximately, Portable Model Only)
    lb
    kg
    Net (Without Front Panel Cover)
    21
    9.8
    Net (With Front Panel Cover and               Accessories)
    24
    10.6
    Shipping
    31.0
    14
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