7 GHz Low Cost SMA Connector Calibration & Verification Kit for VNAs HP Agilent Disks available for HP 8753D, 8753E, 8753ES & 8753ET.

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Seller: kirkby-microwave ✉️ (785) 100%, Location: Essex, GB, Ships to: WORLDWIDE, Item: 171160855114 7 GHz Low Cost SMA Connector Calibration & Verification Kit for VNAs HP Agilent. Important eBay have listed this item on multiple European websites, performing an automatic translation of the original English language version to local languages. This is a technical product, so you may require technical support, which we can provide in the English language via our website, email or telephone. Please no not purchase this unless you have a fairly good understanding of the English language. Introduction Despite being being capable of very high accuracy, a vector network analyzer gets most of its accuracy from the calibration kit. A good quality calibration kit is essential for accurate use of a VNA. This is true for both phase and amplitude measurements. Accurate electrical models are needed of the opens and short circuits. A number of eBay sellers sell low-cost calibration kits, but these are effectively useless, as they don't have the mathematical models of the opens and shorts necessary to load the constants into a VNA, and we doubt they have optimal phase difference between open and short. This kit is different, in that it is designed, rather than just assembled. With this calibration kit, there support for the kit by the website, electronic mail, and the telephone . There are others selling cheaper VNA calibration kits, but ask if they have telephone support, and if you phone you will soon realize they don't understand what they are selling if you ask some searching questions.

This kit is very different, it that it was designed by a chartered engineer with a Ph.D who you can email or telephone.

There is a support page for this SMA kit , in addition to support pages for using Kirkby Microwave kits with a number of different models of VNAs, including

  • Anritsu
  • HP 8714
  • HP 8753 series.
  • HP 8719, 8720 and 8722 series instruments.
  • HP 8510 series instruments.
  • Agilent or Keysight PNAs
  • Agilent or Keysight PNA-X
  • Agilent or Keysight ENA instruments (This includes the earlier Agilent instruments reading only .cxx files, as well as later models which read .xkt files)
  • LA Techniques VNAs
  • Rohde & Schwarz VNAs (We can provide a .calkit file readable by some R&S VNAs, but the kit can be used with all R&S VNAs)
  • The Picotech 106
  • The VNWA (We routinely generate files that can be read by the VNWA)
  • Copper Mountain VNAs

The design of this kit is vastly superior to that of other cheap calibration kits sold on eBay and elsewhere.  Using a combination of

  • Accurate physical measurements
  • Computer simulations with a 3D EM modeller,
  • Measurements with a professional VNA which has a calibration certificate after it was calibrated by Keysight . You can see the calibration certificate on our web site. (Unlike other laboratories, we ensure the equipment is properly calibrated by the manufacturer, not a 3rd party lab that does not have the ability to calibrate the instrument properly, despite their claims.)
  • Design and testing by a chartered engineer with a Ph.D.
an SMA kit has been produced which has good performance to 7 GHz .  We also have other models, for use up to 12 GHz. Please see our other eBay auction for a kit you can configure to 12 GHz. The kit includes all the components necessary to
  • Perform single port (S11 or S22 calibration)
  • Perform a full 2-port calibration, assuming you have a VNA with a S-parameter test set.
  • Perform unknown-thru calibration, assuming your VNAs firmware supports this powerful calibration technique.
  • Measure the properties of non-insertable devices - those with male SMAs at each end, or females SMA at each end (An insertable device, which has a male connector one end and a female the other is easier to measure)
  • Perform a verification that the calibration has been successful, by comparing the results you measure on the supplied attenuator, to the measurements on a professional vector network analyzer (HP 8720D), with the high-end and very expensive 85052B calibration kit. 
You will get
  • Male short, with the offset delay & offset loss given to you, which must be entered into the VNA to allow accurate calibration.
  • Male open, with the offset delay, offset loss, as well as the fringing capacitance coefficients C0, C1, C2 and C3. Again these must be entered into the VNA for the calibration to work properly.
  • Male load
  • Female open, short and load - with the same parameters as their male counterparts.
  • An attenuator, complete with both magnitude and phase information of all 4 S-parameters measured on an HP 8720D VNA with 85052B cal kit. This will allow you to verify the VNA are using is accurately calibrated, and with no significant errors. 
  • M-M adapter with measured electrical delay, to help in making measurements on non-insertable devices.
  • F-F adapter with measured electrical delay, to help in making measurements on non-insertable devices.
  • USB stick with data on it on the measured devices
  • An optional floppy disk for either the HP/Agilent 8510, 8753 or 8719/8720/8722 series of VNAs. On later models of these VNAs, all the coefficients can be loaded directly from the floppy disk. If you have more than one instrument, disks for all models can be supplied on different disks. 
  • A very high quality case, made by Pelican in the USA, which is waterproof and dustproof (IP67 rated). This is available in yellow and black, If you intend taking the case outside to use it for antenna work, then we would suggest the yellow one is the most visible.  If you have no preference for colour, then you can save yourself £1 (1 GBP), by picking that option. We will then ship the colour of case we have most of, so reducing the number of times we have to order cases, so reducing our carriage costs.  The cases we used are really from Pelican (known as Peli in the UK due to trademark issues). These are not Chinese copies, of which there are many.
  • An optional s houlder strap, which is useful if you are taking the kit outside for work on-site or with antennas.
Specifications. Return loss of loads is: >= 32 dB up to 7 GHz.
(Please to go our other eBay listing where you can choose optional extras, including a frequency limit up to 12 GHz.) Accuracy of phase standards 3 degrees or less - this is a conservative estimate. Pin & dielectric depth All devices are checked to ensure both the pin and the dielectric are not forward of their correct positions. A Maury Microwave A027A connector gage set is used for this. Typical depth -0.0025" (-0.06 mm) Allowable depth 0.000 to -0.010" (0 to -0.25 mm) Phase difference from open to short. The ideal difference in phase between the open and short is 180 degrees, but in practice it is not possible to achieve this due to the non-linear fringing capacitance of the opens. However, the design of this kit is such that the difference in phase between the male opens and shorts stays very close to 180 degrees, which is the ideal value. If you look at the photo of the VNA screen, which shows females at the top, and males at the bottom, you might notice the phase difference between the open and short is always close to 4 vertical squares, where each square is 45 degrees, even though the phase has changed by more than 360 degrees on the males!  On the male standards, the phase never differs by more than 12 degrees from the optimal 180 degrees at 11 GHz, and on the female standards, the difference is never more than 7 degrees to 11 GHz. These values are well within acceptable levels, and do not result in 12 degree phase errors, as the difference is taken into account by the fringing capacitance coefficients. (At 7 GHz, which is the frequency limit of the kit, they are better). In summary, this is an economical calibration kit, far below the cost of those from Agilent and similar, and suitable for all amateur and most professional use. It will not be as accurate as an Agilent 85033E (9 GHz kit) or 85052B (26.5 GHz kit), but it is a lot cheaper, includes an attenuator for verification (which the Keysight/Agilent/HP kits do not), and is infinitely superior to the cheap junk cal kits sold on eBay and elsewhere, where most have no parameters, and those that do, just have an offset length, which gives poor accuracy, especially above a few hundred MHz.
Shipping
If your language uses characters that are not in the English Alphabet, then please ensure when checking out with PayPal, that the address has only characters in the English Alphabet, since it is not possible for us to enter Chinese, Japanese, Korean or similar characters into the couriers web site to deliver the goods.   Kits are shipped with a good couriers - usually Fedex or UPS, which offer a fast service, with excellent tracking. We do NOT use companies like Yodel, City Sprint, iPost Parcels, Hermes etc, all of which generally offer poor service. Neither Fedex or UPS will deliver to post office (PO) boxes - we must have a proper physical address to ship the kit to. We will normally only ship by Fedex or UPS, as they are fast and reliable, but will consider other couriers if a customer requests it. Please ignore the international delivery times given by eBay, as it will be faster than they say to most regions. The shipping charges are:
  • FREE for the UK
  • Outside the UK, carriage cost varies by location and whether a standard or express service is requested.
Please give us a telephone number for the courier. If you order both our N kit and our SMA kit, pay for both then we will refund you the excess carriage charge.
  • Condition: New
  • Floppy supplied: No floppy wanted.
  • Box colour: Black
  • Padded shoulder strap: No
  • Country/Region of Manufacture: United Kingdom
  • MPN: 85033
  • Brand: Kirkby Microwave Ltd

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