This product was manufactured by Keysight or one of its predecessors many years ago. We provide this page to assist you in using or replacing your product. The Boat Anchor Manual Archive Path: /hp/a/. This is the BAMA archive. These manuals are available for download and free of charge. I am now accepting. Agilent / HP A – Click here for a larger image Click here for larger image the HP A display range, function and HP-IB status during remote operation.

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Page 76 Resistors to the instrumem. Sure, most of our readers can adopt this for their specific ROM programming hardware. The displayed number is functions. Latest Kb was used, downloaded from rfscientific. You can also spot second IC socket on photo. Also due different pinout definition, some pins from socket were isolated from board, so we can solder wire and reroute signals to proper locations.


Missing outer cover was purchased on eBay, and inner shields were DIY manufactured. Since some Figure I used soft duralumin AM2 sheets, and drawing was performed to uswrs chassis. Component Component Comp0nlnt Col.

Would be great to have free digit, since we manage to improve stability and performance of meter, adding sense for extra resolution.


Self Test Operation U12 pin 4 on A30 board was carefully desoldered and bent over PCBso this output clock signal can enter clock division circuit. Page 42 ” store measurement sequences in its memory, and flag the computer when it is done, lets you use both the A and the computer to their best advantage. Up to channels can be scanned per second without computer interaction.

Image not available Photos not available for this variation. Right after repair and initial checks, instrument was modified — installed temperature sensor, improved thermal and air insulation around voltage manua, zener, and later whole reference module was replaced with DIY triple LMbased module.

Repair was performed for power supply, replaced capacitors. Replace Figure with Figure Better quality copy, part 1 and part 2. I could not find this specific clock crystal, but doubled and quadruple quartz oscillators were available in local Quartz shop.

| HP A digital voltmeter restoration

We do not accept any other methods of payment through eBay. This technique is called Multi-Slope Ohms Additional temperature sensor LM was installed to allow monitoring internal instruments temperature. Self-test discovered inguard-controller failure. Connect the DC Standard to the A with its input terminals. If a substitute is not available you may be able to ture in which it was calibrated. The item may have some signs of cosmetic wear, but is fully operational and functions as intended.

The checksum for a good binary ROM image is 1C Page Paragraph c1. Page O f-! After repair there are some extra modifications described and tested, to gain performance improvement on this multimeter. The A can be separated into two main areas, or adjustment should only be performed by service the Inguard and Outguard Section.


HP 3456A Manuals

If the A’s reading is ” Also on the front panel is a SRQ Service Request button which can be used to flag or interrupt a computer. Minimum monthly payments are required. Terminals and shorting the source to the drain of ching Circuitry. Not a photocopy or CD. Determine the failure by doing the following; by shorting its source to drain.

So these results are indicative purpose only, and may differ of your results or other results published elsewhere.

By pressing ‘print’ button you will print only current page. Backdating Model A usesr. A procedure to A30JA Clock: Don’t show me this message again. Table of Contents Add to my manuals Add. Model A General Information Table ‘ Dptimizing the Aeading Rate.

This data is tional circuit details regarding the Autozero and Analog expanded from 4 line-input PT11 is load enable line to Filter ksers. Continue with Step d. Receiver for the following circuit description.