Herb's Test Equipment

This section of my Web site lists electronic test equipment and related items. We also have some test or development or instrumentation computer cards on some of our other Web pages, as linked below. Customer references are on my "odds and ends" page. For S-100 (1970's computer) stuff, check our S-100 home page.Links to our major pages are on my home page at this link for Herb's Stuff. To email me, see see my ordering Web page for my email addresses.

All that said, the items on this page are linked below, with some links to related pages:

• Oscilloscopes and related
• Heath, Heathkit instruments
• HP equipment
• lasers and optical
• B&K cartridge microphones, impedance head, etc.
• Other instruments
• Cases
• various plotters and chart recorders, supplies, accessories
• GPIB, IEEE-488, data collection, communications cards
• HP manuals.
• other manuals
• UNUSED multi-pin connectors, wire, some electronics are on this linked Web page.

On other Web pages:

• terminals (those things with CRT screens and keyboards and RS-232 or current loop)
• Commodore and Amiga service manuals
• links to Multibus, VMEbus, STDbus cards and manuals
• our Mac NuBus and PCI page.
• UPS (uninterruptable power supply) items
• Single-board computers I've found, restored, or otherwise accumulated.
• related items are on my "odds and ends" page
• customer references on my "odds and ends" page
• ordering info for these items.

Meanwhile, I have other activities on this Web site: Check my Home page for links to other sections on Astronomy and Optics; Apple Macinstosh stuff; S-100 computers and 8-inch floppy drives; SGI, Sun and DEC equipment; some "odds and ends" computer stuff; electronic and other test equipment; and personal information.
Thanks for your interest in my site. Stop to smell the roses from my New Jersey USA garden.

Check our SHIPPING AND ORDERING INFORMATION before you order.
To order, send an email message with your ZIP code or address (so I can quote shipping costs) and the items desired. That order page has my email address. If you are making inquiries or comments, the address is not required of course.

Oscilloscopes and related

I have a small stock of oscilloscopes, either rack mount or portable or desktop. But given the poor market for the older instruments, we are parting out some of these. So boards and CRT's may be available, as well as some smaller portable oscilloscopes.

Tektronix series scopes, plugins, as parts

Tektronix 453 50MHz portable scope - PARTS.

Three 453 units available as of Feb 2013. One has/had working CRT, the other two do not. Because of age (50 years old) and value of boards for scrap (gold coatings), these have a scrap value of $30 or more. I'll sell PARTS from these, but it does not make economic sense to sell these as working units. Shipping costs for 30 pounds from New Jersey would be $30-$60, so shipping whole unit does not make sense, given that many old oscilloscopes are available for prices of that same order. another reason I'm offering these for PARTS.

I have a few UNUSED Tex 7400/7900 series parts as follows: (four) 050-0651-01, 7000 series vertical output IC replacment parts kit; 050-0650-01, 7904 vertical output amp parts kit; (three) 050-0700-01 7404 or 7844 vertical amp parts kit.

I have some working 7000 series Tektronixs plug ins available as follows below. I'll price them if you ask, but prices start at $15 each plus shipping and packing - I can scrap them for less. These are "sold AS IS, basic tests OK, all knobs attached". It's a better "deal" for you, to buy several to save on shipping costs. I'll consider offers.

last tested Jan 2012, counts below not current, so ask what's available.
7B85 horizontal triggered sweep - sold
7B80 horizontal triggered sweep - 1
7A18 dual vertical amp - 7
7A18A dual vertical amp - 3
7A22 vertical amp - sold
7B53A horizontal triggered sweep - 3
empty plug-in for prototyping - 1

Slightly more fancy, is a 7D01 logic tester (double size) no probes. Talk to me about this.

I disassembled a rack-mount Tektronix 7313 oscilloscope, to the CRT and board assembly around it. I have TWO of those CRT's and board assemblies. Also available is one set of other boards: the board behind the power transformer, and the "backplane". These should ship at much less cost than the full scopes would. The cost of shipping otherwise made the total cost of these too high. This was functional for some time but was not operated before disassembly. Weight is about 16 pounds unpacked, 24 X 12 X 8 inches ought to be the right sized box. I'd guess packed weight with bubblewrap and styrofoam peanuts would be 21 pounds. $40 + ship for the 7313 CRT, assembly and remaining boards; $25 + ship for CRT and its assembly only.

I have a few other CRT's from stripped 7000-series Tek scopes, ask.

Oscilloscope test probes

I have a limited number of oscilloscope test probes. They seem common enough on the Web auction sites and at hamfests, at low prices for 100MHz bandwidth or better. I see no point in buying them to resell, so I don't have any available for sale by themselves.

other oscilloscope items

Vacuum Tube testers

Precision 954-G tube tester, pretty old and beat up, but tested and working. From Precision Apparatus Company. Has type 80 tube inside. Check this Web page for what I did to clean it and check it out.
precision photo 1, precision photo 2 , precision photo 3.

Heathkit TC-2 tube tester Case has cosmetic damage, but it's tested and working. We have a photocopy of the manual with schematic. This one, we'll keep for use, as typical prices for old emission-type testers are only a few tens of dollars., Here's the story on how I repaired and restored my TC-2. Some Heathkit devices and Heath manuals are on our Heath and Zenith Web page

Heath and Heathkit instruments

Some Heathkit computers and associated manuals and magazines are on our Heath and Zenith Web page

Heathkit IO-20 analyser

Heathkit IO-20 automotive analyzer w/manual. Ignition analyzer, powered up (using Variac) and appears to operate. Tubes are 5UP1, 1V2, 6EA8, 12AU7, 12AU7, 12AX7, 12AX7. Here's a test image on the CRT based on test procedure including jumpers as specified to display sine wave. Unit is clean, here's some small chipping of paint on two sides and much less chipping on the rest. We do not have the probe, but the Heath manual suggests it includes a small transformer as a pickup, maybe one can be constructed. Manual is in fair/good condition and appears complete. (I don't think the model number is 10-20 .)

)Note: I picked up in Sept 2011, a timing light with what MAY be a suitable HV probe and DC cables for the Heathkit. Ask about this. - Herb)

In June 2011 I was contacted by Mike Sloan, who has a CO-1015 Heath probe similar to the one above. Here's what he told me, and here's some photos of his probe. - Herb

[photo of probe] The two "posts" are .256" square and are .623 from the "top" to the "bottom" on the outside and .352" from the top to the bottom rail. The total outside length is 1.011", and the inside length between the too posts is .490". I counted 15 turns on the outer layer.....with my old eyes, [looking at] the image is better than actually looking at the coil.

I dug out the assembly manual for the CO-1015, and the schematic shows only the usual symbol for a choke with a metallic side (with a dozen loops, but you can't go by something like that). Looking more closely at the windings, I think I have to take back my guess that it is double. I think that what I took to be the underneath winding is just some cloth tape to keep the insulation from being abraded by the core. And, as you noted, most of the winding is coated with Glyptol or similar to keep in in place. And the pole material does appear to be some kind of potted or sintered iron, not pure metal. - Mike

Other Heath items

Heathkit EF-1This is a simple variable DC and AC supply to evalutate the Heathkit VTVM. Clean and looks to be in good shape. 6.3VAC, and variable 140V DC or AC supply at not much current.

Heathkit EUW-19A Operational Amplifier System. Malmstadt-Enke type, from the Malmstadt & Enke's book "Electronics for Scientists" which describes this EUW series of Heath products. Go to my Heath Zenith computer Web page for more.

heathkit IP-2717A or IP-2717 High Voltage supply. two voltage adjustable supply. Follow this link for a typical photo of this item. 0-400V DC at 100mA, 0-125V (negative) at 1ma. Two panel meters, current and voltage. Also 6.3V and 12.6V AC outputs. Typically I get these in good cosmetic condition, some scuffs and dents. However, often the voltage controls (potentiometers) are damaged and so adjustment is erratic, so they need to be replaced, see repair notes below. Shipping weight 19 lbs packed.HCheck below to see if I have any available.

Heathkit IP-2717A HIGH VOLTAGE supply None available.

Heathkit IP-2717 HIGH VOLTAGE supply, like IP-2717A but older model with more vacuum tubes, different design. One available, nonworking, no top cover, no meters - otherwise looks intact. Sold AS IS for parts only - maybe you need the transformer?. $45 plus shipping.

Heath IP-20 0-50V at 0-1.5A rated. One meter, switched between current and voltage reading. Cosmetics good. Will test upon request. $49 plus shipping.

Repair notes: I've had to repair the controls on a few of these Heath high-voltage power supplies: here's some notes from a client about them. Replacement pots can be bought from Radio Shack and other sources.- Herb.

I just opened up an SP-2717A.  The pot in this unit looks original, and it
is actually marked 50 k ohm "AUD".  So it appears this is just an audio
taper pot.  It measures a tad below 10% at 50% rotation.
 
The 500k B pot looks to be linear if I actually measure the pot.  But the
voltage output is well below 200 volts (closer to 100) at 50% rotation on
this unit.  (I had already adjusted the zero and 400 V trim pots before
doing this.)  I suspect this is just an artifact of how this circuit works.
 
I guess I can understand why they selected an audio-taper pot for the C
voltage adjustment.  This would provide greater resolution at low voltages.
Remember, in an audio (logarithmic) taper pot, turning the pot (let's say up
or CW) X degrees from any initial voltage will result in the same Y
percentage increase in voltage from the initial voltage.  The amount of
rotation to get from 10 volts to 11 volts should be the same as 50 volts to
55 volts, or 100 volts to 110 volts.
------------------
 
Nigel

Any HP oscilloscopes and related accessories will be in my oscilloscope section.

lasers and optical and photographic

Bolex Paillard H16 REX Reflex 16mm film camera. Here'a a Web page with some details and photos of my Bolex H16 REX Reflex, and accessories. Probably from 1960. Let me know if you are interested.

B&K cartridge microphones, impedance head, etc.

I acquired a number of B&K microphones. They include a 8001 impedance head, ZR 0020 inegrator, 4135 and 4131 cartridge microphones, and some related items. They include calibration charts, important because these are laboratory-grade microphones for testing. Check this Web page for my B&K microphones and for what is currently available.

Other instruments

I have a InLab Inc. model 28A Universal Progammer. It's a PROM and PAL programmer from about 1989. I got manuals and software, but no power supply for it. The power supply is a wall-wart of some sort with a DB-9 female connector to the programmer. Anyone who needs, or has, information on this MOdel 28 or 28A programmer - please contact me!

Follow this Web link to some Rustrak Ranger and Ranger II data loggers and voltage and current probes.

Bauch & Lomb Spectronic 20 classic lab spectrophotometer. Seems to function but will likely need repair.

Nicolet Nice Z80 in circuit emulator pod for Z80. I have the case and the Z80 pod which plugs into the Z80 socket and which has a DB25 connector. I recently (2008) obtained a manual and made a copy. If you have experience with this emulator, please contact me. One person who did is Jeff Jonas at this site. Here's an image of the back of the NICEZ80 showing the cable and the header plug-ins.

Keithley Model 147 Nanovolt Null Detector. As it says, is essentially a DC analog meter to zero-detect down to nanovolts. This model has a mechanical chopper to create an AC signal and to break up current loops. A meter is superior to a digital readout to monitor by eye. Switchable scales from millivolt to nanovolts. Has analog output for chart recorder. has old 6V 4A-H NiCad battery. This device dates from about 1969. the serial number on the back is below 62900. The case is complete and in general good condition, with light rust on chrome parts. I have other photos available. It should ship at 25 pounds weight in a box 16 X 22 X 8 inches (to determine shipping costs). Please note - if you are outside the USA, the cost of shipping is MORE than the price I'm suggesting below.

No probe included, needs a shielded cable and probe which has minimal voltage or current-generating contacts - remember, this is very small voltage to measure! Meter powers up as described below. PDF of manual can be found on Keithley Web site (but not for vacuum tube version, only FET version). We'd like $59 plus shipping for this, so AS IS no warrenty or return. No, I can't verify the condition of the chopper. No, I don't have the 1481 or 1482 input cables. No, I don't have replacement batteries - construct a NiCd pack yourself. No, it's not calibrated. No, I've not constructed a thermocouple to test it. If any of these were available or tests done or parts provided, the price would be HIGHER.

As of Nov 2010, the Model 147 unit powers up on AC and the meter deflects to left or right, depending on settings. Under AC operation there is a loud squeal of several kilohertz that's pretty constant in tone and volume. Both lamps on the front will light depending on the mode of operation, but they are dim. The inside is clean and shows no damage that I can see. After several minutes of AC power, the 6 volt 4AH NiCd battery reaches about 2.7 volts but drops to 1.7V after several seconds of battery-only power. Date on the battery is 1971. There is a vacuum tube, a subminature Raytheon CK512AX device with a 1969 date.

Keithley model 417 picoammeter two units available. Here's what they look like. Both have the 4170 Input Head plug-in. The back has a BNC input, remote connector, and output "1MA-3V" jack. Rack mount. Ask for price and details.

Sinclair DM2 Multimeter, seems to work OK. With 110V/60Hz wall power supply. This could be a classic! Sold by Clive Sinclair's company (the ZX-80 Sinclair guy) in 1974, 1975 as a kit for 50 pounds (UK). What's it worth to you?

E-C Apparatus Corp EC-500, power supply. Still under evaluation, ask!

Eico 377 sine and square wave audio generator. Old, classic unit. 20Hz to 200kHz in four bands. Not working, dead, sold AS IS for $20 plus shipping.

Optimation Inc RCD-4 sine wave oscillator. Apparently precision as it has four decade (0-9) controls to set frequency. Audio range. A/C powered.

Simpson 270 meter w/ 654 Audio Wattmeter adapter! 270 series 3 meter, not an old model, looks in good shape. With model 654 matching audio wattmeter adapter. This adapter apparently supports measurements at 8, 16 and 600 ohms impedance. There is a slide rule on the adapter to convert meter readings from volts to watts. $59 plus shipping for both.

Cases

Presto brand? equipment suitcases, 19" X 16" X 10" (inches) outside dimensions, with locking latches and accordion folders. Like Parker brand. For transit or tranport or shipping of equipment and instruments. One or two three or five-slot folders for documents or boards. (Folders are attached by rivets, not normally removable.) Hard molded plastic ribbed construction, room for padding. Weight with two sets of folders is 15 lbs, with one set 11 lbs. Internal dimensions depending on ribs and with folders removed is 17-18 X 14.5 X 9. A few keys available, keys appear to be universal. Five cases available, $39 each plus shipping.

GPIB, IEEE-488, data collection, comm, development cards

I have a number of various PC cards (ISA, PCI, NuBus bus) for data acquisition or control. They are untested but look undamaged. If you have software or links to software I can try to test. I'm looking for reasonable offers for these; offers of $10 or so are not reasonable. If you want Apple or Mac NuBus cards, check my Mac Web site's NuBus section.

ISA prototype or proto board cards

Note: these boards come and go, so ask me FIRST if I still have them!

These are cards for 8-bit or 16-bit (XT OR AT) ISA bus, which allow you to build your own card. Components are mounted on sockets or directly on the card. If you don't know what these are, you can't us 'em!

JDR brand 16-bit protoboard JDR-PRIO AT type 16-bit blank card with layout for decoding the ISA bus, using PAL and other logic chips. Also JDR Microdevices 8-bit XT prototype cards. Some new unused and sealed in baggies. $35 each. A few are slightly used, for less.

Vector brand 4167-10-02 and 4167-10-01 4-slot XT & AT backplane extender This includes the AT plug-in board, cable to backplane. 1 XT slots and 1 AT slot are populated. $49, unused.

IBM brand AT Prototype adapter. Two available, one with brief doc. $39 each.
one 16-bit or AT extender card Vector brand (retail $80) my price $29, and one 8-bit extender with fuses by Techmar Inc. in 1981 my price $79.
Vector 8 bit XT extender card (retail $70), one available. $29.
PC type prototype boards from JDR. Two 16 bit (top) one 8 bit (bottom). Typical retail is $50 and up My price is $29 each.

Vector brand 4167-3 AT protoboard. $35.

Augat brand 16-bit wirewrap cards, two available - UNUSED and unwrapped
boards are stacked together to protect gold-plated pins.
These boards would cost hundreds of dollars at today's prices, due to the number of gold-plated pins, if they are made at all. It's too expensive to provide unused gold pins. A tribute to 1980's hardware development. $69 each, $129 for both.

Ultra-X brand "Examiner" 16-bit card to display POST code, run some diagnostics. Card was made by UXD Inc. No docs or s/w, only one card. My price $29.

My prices do not include shipping, packing, handling.

Other cards

Strawberry Tree Computers "Analog Connection Jr." ISA cardCard, manual, 5.25" diskette. 8-bit ISA card with 50-pin flatcable connector. 8 analog differential inputs, 9-12 bits, up to 10KHz. 12 digital I/O lines. one counter/timer. Support for thermocouple input. Input protection to 50 volts. 200 page original manual. Untested but it's rare to have docs and software for an I/O card!

Scientific Solutions Stepper Motor Controller, 8-bit ISA card part number 20018. UNUSED cards in box, one cards available. Uses CY525 Stepper Motor chip, two chips per card. 1981 product. Docs sold to another customer, unfortunately. Card is about 12 inches long.

Imaging Technology series 151 image processor. This is a VME based system, so I've moved it to my VME bus card Web page.

Harco Industries Parallel / Interface 044-039-055. 8-bit ISA card with female DB-25 connector on end. Has two Li batteries, eight NEC D43256BCZ-70L RAM chips. 74LS244 and 74LS373 drivers and recievers to the parallel port. Also Dallas DS1210 and DS1211 chips. Maybe it's set up as an old parallel port card with battery backed memory! Maybe the Dallas chip is a clock chip! It's up to you to work the details.

We have a AT&T 80386/25 WGS system, with Windows 3.1 and MS-DOS, running OK except the battery/clock chip (time of day and other CMOS settings) is out of power. Previously contained in the above AT&T system is a Bit 3 501-101 card, ISA card. It has two ports on the end which appear to be fiber optic. Chips on board are AM7969-125DC and AM7968-125DC "TAXIchip" labled. We have a backup of the software of the whole system, there is likely some Bit 3 software on it. But we never ever ever warrant software in any way. Contact me if you are interested in this board.

Iomega PC2B card with lables for PC2, PC2B50F DDXPC2F. This is apparently an old old SCSI card of some sort, may have been used with HP JetStore 2000 tape drives. Has external and internal 37-pin connectors. $20 plus shipping, condition unknown.

Allen Bradley 1784-KTX . 16-bit ISA card for communications with A-B products using DH +, DH Plus, and DH-485 networks. List price is over $700, used price seems to be $60-$80 as of Dec 2004. The A-B Web site suggests this card can be used for a 15% credit for an upgrade card or product. Demo drivers may be available from the Web at no charge, check the Web for specifics. Card removed from PC w/o hard drive or software, looks in good condition. But we have an original CD with "FIX 7.0" software from Intellution INc. (Now a division of General Electric GEfanuc) from 1999. FIX is a software package for industrial automation; support and drivers appear to be online. Looking for your offer.

IBM brand GPIB interface cards for IBM-PC's I have two 8-bit ISA cards (for IBM-XT's and later) made by IBM for the General Purpose Interface Bus (GPIB, HP-IB, IEEE-488), model 6541503. One is the card only, the other an unused old stock card in original box, with manuals, diagnositic diskette, and card in original antistatic bag. These are not tested so sold AS-IS. Shipping weight about 4 lbs. These are old but maybe you need exact replacements. For Linux software, you might check the "Linux Lab Project" on the Web. Apparently there is a current (2002) card, model AX5488, that is compatible with this card.

For Apple NuBus IEEE-488 controllers, check my Mac cards (Nubus, PCI) Web page. I may have other IEEE-488 devices for the Mac, check other parts of my Mac Web site accordingly.

IBM Data and control cards I have (Mar 2004) three IBM brand Data Acquisition and Control Adapters (DACA), card number 6323710 model number 6451502. No docs, not tested, found in a collection of old stock cards so these are sold AS-IS in antistatic bags. Here's an image of the three cards. These are long XT-type (8 bit ISA) cards, with some kind of long thin external connector. Two cards have a "loopback" block in this connector for testing. This is all we know specifically, a Web search shows these were an IBM product in the mid 1980's

Until recently there were no on-line docs or software that I could find. (If you have this info let me know.) But in November a client found a site which HAS ON LINE manuals and software, on this private site.

An on-line IBM research paper had the following information: "the DACA has two analog outputs with 12-bit resolution, four analog inputs, a digital output of 16 bits and a digital input of 16 bits. The analog input channels mulitplex into one A/D converter of 12-bit resolution; the rate of data sampling can be as high as 17kHz. The dynamic ranges of the analog inputs and outputs are switch selectable: from 0 to +10V, from -5V to +5V, and from -10V to +10V." This card was used with a distribution panel, essentially a cabled card with screw terminals. Another user of this card says it also has a 32-bit timer and a 16-bit externally-clocked timer/counter.

Looking for offers on these DACA cards, shipping weight 2 lbs for one card.

Daystar Digital cards with Z180 MPU. Two identical cards, look like MCA MicroChannel bus type, copyright 1988. Card has Zilog Z180 (one socketed), 12MHz crystal nearby, Zilog SCC chip, RAM, and some logic. Also a DB-9 connector (layout shows 2nd connector). I/O to DB9 appears to be AM26LS30 and AM26LS32 and some 280 ohm resistors. My guess: some kind of serial communications card, probably LocalTalk. If so the ADF is 6674 (whatever that means). Make offer, but it has value for the Z180 chip!

Data Translation DT2821-F-SE card. This is a used pull from a PC. A 16-bit AT or ISA card, 12-bit A/D 150KHz 16 channels; two D/A's 130KHz; 16 I/O digital lines; with interrupt and DMA capabilities. Not tested. Some info is on the Web from Data Translation, possibly drivers. Also some Linux drivers on the Web. Looking for a decent offer.

National Instruments PC-DIO-24 ISA card. Has flat cable male connector, 50 pin. 180712-01.

National Instruments PCI-6713 card from 1998. untested. 8 channel, 12-Bit, 1 MS/s per Channel Analog Output Board. PCI card, external narrow 68-pin male SCSI-II type connector. Check their Web site for more info.

National Instruments PCI-6602 card from 1998. untested. 32 TTL I/O lines, with 8 up/down 32-bit 80MHz counter/timers. PCI card, external narrow 68-pin male SCSI-II type connector. Check their Web site for more info.

DAS-1202 ISA card, 2 available. With DB-37 connector, also flatcable to another DB-37 connector. Has Harris CP82C55A chip, LSI custom chip. Digital/analog card.

PIO-24 ISA card. 8-bit bus. Parallel I/O card.

half of ATA (ISA bus) to VME bus adapter. ATADA card is 8-bit ISA card. Card says "ATADA Ver 2.1 pro_VME + ARW". Made by Weisz systemtechnik in 1999, there is product info on this Web site: http://www.wiener-d.com/fr-misc3.htm Let me know what this card is worth to you. I don't have the VME side card, the "ITVME 6 VME bus master".

UNUSED programmable controllers from a recent purchase are on this linked Web page.

HP operating and service manuals

17174B manual, DC offset Input Module
1601A manual (copy), logic state analyzer for HP 180 'scope, 123 pgs, $15
--10231A data probe, copy, 9 pgs, $2
--10230A, clock probe, copy, 9 pgs, $2
400E, 400EL manual, AC voltmeter
427A manual, Voltmeter
427A manual, voltmeter (another manual)
434A manual, Calorimetric Power meter
350C, 350D attenuator set manual

other manuals

I have Commodore and Amiga service manuals on the page linked.

Toshiba Technician's Ready Reference" for Libretto Portege Satellie Tecra laptops, from Nov 1998. This provides service information for these laptops; Libretto 50CT 70CT 100CT 110CT. Portege 300CT, 320CT, 610CT, 620CT, 650CT, 660CDT, 3010 3015. Satellite 100CS 105CS 110 115CS 20CDS 220CDS 305CDS 310 C15 320 330 2505CDS 2510CDS 2515CDS 4000 4010 4020 Pro 400 405CS 410 415CS 420 425 430 440 460CDT 470CDT 480CDT 490CDT 409XCDT. Tecra 500 510 520 530 550 700 710 720 730 740 750 780 8000. Parts lists, assembly drawings, I/O lists. 500 pages.

I have a Tektronix binder with *FACTORY CALIBRATION* procedures for 100 series through 590 series equipment, and for many plugins. Dates are from the late 50's thru early 1960's. Some depend on the serial number of the device. Most are several pages, a few are longer or shorter. Almost all are original documents but there are some photocopies. Procedures refer to use of Tektronix instruments (signal generators, etc.) or in a few cases to specialized test equipment.

In May 2010 I sold this manual, it's likely to be put on the Web. Contact me if you are interested.

Plotters, supplies, accessories

HP 7090A Measurement Plotting System is a 6-pin desktop plotter with three analog input channels which are digitized at 33KHz for 3KHz storage and plotting. There is also a date/time clock to date stamp the plots, a LCD character display to show status, signals and setups; and an IEEE-488 (HP-IB, GPIB) control interface. They don't make plotters like this anymore! Here's an image of the plotter. Details of these features:

• DC to 3 kHz Bandwidth, 33.3 kHz Sampling Rate
• 3 Channels with simultaneous sampling
• 12-bit Resolution, 1 k Buffer/Channel
• 6 Trigger Modes with up to 100% Pre-Trigger Capture
• Full HP-IB Programmability and Data Transfer
• Annotation of Set-Up and Trigger Conditions and Data Points
• Floating and Guarded analog inputs.
• 6-pen turret

Ribbons

Six unused GEnicom 1A3000B01 ink ribbons. For Genicom 3460, 3470, 3480, 3570, 3580. From year 2003. Sealed unused, ten ribbons. $10 each plus shipping and packing.
Six unused Genicom 3A1600B22, for Genicom 3860, 3880. Unused. $10 each plus shipping and packing.

chart paper

Graphics Controls Corp. 82S511 roll charts. "Taylor 0-250". 4-3/8" wide rolls, 4-1/4" between holes. HOrizontal scale 0-250, length stamped with hour marks. lines every 1 inches. 20 boxes of one roll each.

Small plotter fiber pens

I have dozens of new-old-stock plastic computer plotter fiber-tip pens. The link is to a photo of one, with a cap on the end. Staedtler model 32BG03-9 (black) and 32BG03-3 (blue), suitable for many old HP plotters. These are packaged by fives, and I have about 50 sets split roughly between black and blue. Looking for offers for lot or for several sets at a time..

For more info or orders:

Copyright © 2013 Herb Johnson