A RMS VOLTMETER. Product Status: Obsolete | View Service Options. This product is no longer available. Visit Technical Support. No replacement found. Path: /hp/a/. This is the BAMA archive. These manuals are available for download and free of charge. I am now accepting new manuals for inclusion in this. New -hp- A RMS Voltmeter has a 10 megohm input impedance, no zero set control, and a high crest factor with immunity to large overloads. Sensitivity is.
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This item doesn’t belong on this page. Power cord connector removed and replaced with a fixed power cord. Since then, we have been investigating low cost solutions for low level AC measurements.
These pieces are often used but in good working condition. Additional Info Please let us know any information that will help us fill your requirement such as urgency, quantity needed, etc.
Agilent / HP A for sale $ | | AccuSource Electronics
Discounts may be offered for reduced service levels. Show More Show Less. Understanding and selecting rms voltmetersFailing to verify ac-voltmeter accuracy before conducting rms-noise measurements may cause highly misleading results, Jim Williams and Todd Owen, Linear Technology Corp, EDN, May 11, Please let us know which of these you would be willing to consider for the price discount.
See also their main gallery. Please contact us via email or toll free at and we will be happy to assist you with this request. Input impedance is 10 Mohms.
Here, I wanted the option to try a few different versions of this same part, so the socket. Unable to Process Request Your offer was received but we are unable to process it for the following reason: Here is a technical data sheet for the version of 340a0 hp A PDF.
As well documented at other sites, there has been an evolution of the HP A series meters from their introduction inthrough the late s ending with the B.
The item may have some signs of cosmetic wear, but is fully operational and functions as intended. Please provide the requested information to receive an estimated shipping cost. I do not know what serial numbers changed over from the nuvistor to the JFET input, or from the neon bulb chopper to the intersil integrated chopper might be in the manual changes somewhere; I think the came out aroundnot sure. Trending Price New. The first chopper stabilized circuits used a galvanic break of neon bulbs to cadmium sulphide cds photo cells.
The HP A also offers a crest factor of We would also greatly appreciate it if you could provide us with this error code: Error Sending Request We are very sorry but an error on the server is preventing 300a request from being processed.
HP A Analog 1mw Ohm RMS Voltmeter | eBay
Symptoms included significant movement of the meter needle and low sensitivity. The original DC amplifier was a “chopper stabilized” amplifier in order to provide sufficient DC stability at the microvolt measurements needed to measure small differences in thermocouple voltages. Fortunately, we had two suitable replacements on hand and all is well now. Thank you for allowing us the opportunity to assist with your test equipment needs.
Work both new long rectangles of foam into the slots and then work the board back into the new foam. You should expect a response within one business gp or less. Although not a fixed rule, the later models can be generally identified by a white neon bulb front panel power light indicator, the more modern hp logo black and blue silk screen painted on the panel, the black toggle power switch not the metal toggleand a fuse holder with the light grey hpp the removable part on the rear panel.
The A with the socket easily calibrated to spec.
Some hours later I care not admit how many! Offer AccuSource Electronics is always happy to consider reasonable offers on our test instruments.
Showing Results for Keysight Technologies (Agilent HP) 3400A
Correct Issue Close Wizard. One caution that should be observed is that the thermocoupling circuitry can be damaged by excessive overloads more easily than conventional meters bp always start the meter at a higher voltage setting and then scale down to the range to be measured. The temperature of the first heating element is registered by a first thermocouple. Additional Info Please provide any additional information which could help us determine whether we can meet your requirements for this offer.
I concede that by the nV region as noted in the LTC data sheet a socket can be problematic, however by the uVs with no significant air flow in a closed box, socket to pin thermocouples are less of an issue yes, it can depend on the particular metals and pin plating since all of the pins are at the same or a relatively constant temperature.
But, then one would also need to confirm the stability of the input ACV amplitude as well as 34400a thermocouple-heater pair. Jim’s absence will be a huge loss to the Analog design community.
If the description says needle moves and the picture shows a needle indication above the first mark, plan on a high likelihood of repair! With the power on, the needle should fall between “0” and the first mark. Best Selling in Voltmeters See all.
HP 3400A RMS Voltmeter
We will notify you as soon as this item is available for purchase. Another approach might be to do the test with two or more A and move the A6 board with the socket between np units in separate test ph over temperature. In the process of the repair, we changed out the chopper stabilized amplifier and added a high quality 14 pin socket  In fact, the repaired unit is somewhat more stable less noisy than the working unit, which makes us wonder if due to the improved LTC part?