Probably the worst case is reached if both aspects combine like it is the case in deep space satellite communication. It is used in excellent condition fe5680a rubidium frequency standard made by frequency electronics and its output frequency can be changed. Now go to the analog devices website, and download the data sheet pdf for the ad9830a. This grade offers higher fluidity than primef 7010 also 65% mineralglass fiber, but with somewhat lower mechanical properties. But some of them have a 10mhz reference input at the back. There is also a 1 pulse per second pps output handy for driving a digital clock. Fei 5680a rubidium oscillator ko4bb fe 5680a rubidium frequency standard faq a portable 10 mhz rubidium frequency reference using the fe 5680a regenerating the 10 mhz output of the fe 5680a with a disciplined vcxo to make it suitable for use as a microwave transverter reference. Ppt files but open as a slide show when doubleclicked. Then the software connects to the fe5680a and reads out its momentary configuration. As received fei fe5680a rubidium frequency standard. Inside the 10 mhz rubidium frequency reference using the fe5680a. One thing i cant find anywhere is how the fe5680a powers up with a current limit. On the left, mounted in the lid, is the fe5680a and inside the box is the switching voltage converter near the top and the 10 mhz filterdistribution amplifier and status indicator near the bottom. I showed how to adjust them at the sf maker faire a couple of years ago, if you have another source such as a thunderbolt.
A temperature range required for indoor rackmounted telecommunication hardware with limited air flow. J16 1 pps output 1 pulse per second output signal j17 not used. A precise reference frequency not only for your ham radio. I made a custom 18 aluminum enclosure as the fe5680a gets very hot and needs a good heatsink. The code and pcb files for this project can be downloaded from. Fe5680a breakout board from geppetto electronics on tindie. Orders placed on or after april 25th will ship starting may 4th. Refer to table 1 for a summary of the fe5680a series by option.
Fe5680a gps discipline module from geppetto electronics. I want to build my own reference with a signal distribution system similar to what you did. Different options may be combined to form customized configuration based. Primef 7002 is a 65% mineralglass fiber reinforced polyphenylene sulfide pps. Projecti own some frequency counters and signal generators, but when measuring one with another they do not show the same frequency on their display. For detailed specifications on this line of products, download the pdf datasheet. The first of four rubidium frequency standards sn 96634 i ordered from two suppliers arrived safely. Fe5680a and gps breakout 1pps signal experiments with ntp. Fe 5680a and gps breakout 1pps signal experiments with ntp. Commands are sent to the fe 5680a using the tx line pin 9, and response from the fe 5680a are received on the rx line pin 8. They are all fei communications brand, designated fe5680a but there are a number of variations under that designator.
In general, pps offers an excellent balance of properties. The plugin is linked to my database and when i run the fe create, the user is created in the database but there is no uuid linked to it, so its a bit useless for me i create the account from a jsonapi command while player is registering on our website. If you have or want to play with an fe5680a rubidium frequency standard or an oscilloquartz ocxo 8663xs or a hp 531a counter or a racal dana 1999 counter or similar then this video will most likely be of. Commands are sent to the fe5680a using the tx line pin 9, and response from the fe5680a are received on the rx line pin 8. If you want to change the frequency,i will give you the instructions and software on how to modify this item to 10 mhz output1hz20mhzits easy to change. Whether the network uses cdma code division multiple access, tdma time division multiple access or gsm global system for mobile communications or a hybrid, such as edge, timing to ensure signal synchronization, is of the essence. Best way to convert your ppsx to pps file in seconds. Several months ago we purchased a fe5680a rubidium frequency standard.
Fe5680a gps discipline module from geppetto electronics on tindie. You may return any new computer purchased from that is dead on arrival, arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. The fe5680a features an extremely low silhouette unit for usage in a multitude of equipments. Power and interface adapter for fe5680a rubidium frequency standard.
Fei 5680a rubidium oscillator ko4bb fe5680a rubidium frequency standard faq a portable 10 mhz rubidium frequency reference using the fe5680a regenerating the 10 mhz output of the fe5680a with a disciplined vcxo to make it suitable for use as a microwave transverter reference. Sold as 1pps only, this affordable ebay find is a playground for reverseengineering, with a few useful laboratory applications. A precise reference frequency not only for your ham radio station rev 1. Gps assisted 10 mhz frequency reference elektor labs.
This item is an interface board that makes interfacing to the fe5680a substantially more convenient. At the big display the value of the generated frequency is shown. One of my rb an fe5680a, for example, was off about 1ppb when i got it, which is at least an order of magnitude away from where it should be and two orders away from where it could be. What is the typical drift with temperature tempco input voltage requirements. Convertio advanced online tool that solving any problems with any files. Once locked, the output is a very accurate 10mhz sine wave, accurate to 11011. I have chosen a version of the fe5680a module, which. The pps and serial io are presented on a sip4 and the rf output is on a separate 2 pin header.
Overview fe economy bukkit plugins projects bukkit. I try log all the steps, data, informations, hacks and finds about this unit i just received, which is subtly different from the more common fe5680a. Additional features include low power consumption, fast warm up time, outstanding accuracy, low phase noise and low spurious. Test program to operate an fe5680a rubidium frequency standard, the. A pps file is a slide show created by microsoft powerpoint, a popular program included with microsoft office for creating presentations.
This is the top view of the open fe5680a module with the additional rf semirigid and rs232 cables. In order to perform adjustments to the fe5680a over the serial interface, commands conforming to the protocol described in this section must be sent. I got a couple of these fe5680a pn 217400303521 from a hong kong seller, too. Your wrote that the 1 pps pin of the fe5680a actually produces pulses with pulse period of 8. Hacking a fe5680b rubidium reference clock hackaday. Gps discipline module for the fe 5680a, fe 5650a and fe 405b frequency standards. Mhz originating from 10 mhz sinewave in this case the rubidium frequency standard fe5680a 1011 i n conjunction with the freebsd api implementation for processing timestimes for external signal pps api we can use accurate chip timestamps with the 1pps from gps signal directly on the baords gpio pins, to have an accuracy of. Inside the 10 mhz rubidium frequency reference using the fe 5680a. Both of online web service and local standalone packages are available from. It is saved as a completed slide show, which can be viewed by powerpoint, openoffice, and several other presentation programs. Fei 5650a option 58 rubidium oscillator leap second. The fe5680a case is made of a magnetic shielding metal, so it should not be removed for better heatsinking, etc. After a click on connect one has to select the correct comport.
The item is a rubidium oscillator frequency standard from fei, model number fe5680a. The second was to generate a 1 pps signal from the 10mhz signal and the third was to generate a pwm signal to control the fan speed. A rubidium frequency standard as a precise reference. The example chip in photo, mc74hc393, has status obsolete in datasheets. It is the policy of the portland public schools board of education that there will be no discrimination or harassment of individuals or groups on the grounds of age, color, creed, disability, marital status, national origin, race, religion, sex or sexual orientation in any. Convert pps to pdf online without any fee or registration, get your pdf file in seconds. The parts list provides additional information about the components used to assemble the board. Your wrote that the 1 pps pin of the fe 5680a actually produces pulses with pulse period of 8. Look on the data sheet, and see how it works, check the arithmetic between the f first 8 hex characters and the reference frequency r, keep pounding. Additional features include low power consumption, fast warm up time, outstanding accuracy, low.
On the left, mounted in the lid, is the fe 5680a and inside the box is the switching voltage converter near the top and the 10 mhz filterdistribution amplifier and status indicator near the bottom. This is the top view of the open fe 5680a module with the additional rf semirigid and rs232 cables. For the fe5680a board, add a db9 female connector with pc board pins. Rbdisciplined frequency standards frequency electronics. C, a temperature range required for outdoor, limited access, low maintenance telecommunication hardware. I have chosen a version of the fe5680a module, which includes a. Build a 10mhz rubidium frequency standard and signal. Nice plugin, work really fine, but i have an issue.
This oscillator is a pull from a system that is no longer in use. The fe5680a rubidium frequency standard is widely available used on ebay, and is a reasonably inexpensive way to obtain a frequency standard with excellent stability. The signal levels must conform to the rs232c requirements. The fe5680a is a reliable and versatile atomic standard which provides consistent, high quality performance. For the following, refer to schematic, which shows the components, circuitry and pinouts for the febo and febopll modules. In order to perform adjustments to the fe 5680a over the serial interface, commands conforming to the protocol described in this section must be sent. I could then subtract that drift out of the measurements of the clocks. The do not seem to be very accurate, all of them have normal crystals as their reference. Portland public schools recognizes the diversity and worth of all individuals and groups and their roles in society. A warning if you plan to use the fe5680a as a 10 mhz reference for. If you dont see any powerpoints presentations maybe you will need the powerpoints viewer.
Could you recommend some other ripple counter chip that would work as. A precise reference frequency not only for your ham radio station rev 0. A ublox neo7m gps module will be used and you will need to. For more information on the ad9830 anarogudebaisezu of the companys web site to download the data sheet, please read it because writing is done with a little more. The enables remote adjustment of the output frequency by computer through an rs232 interface. The fe5650a features an extremely small size unit for usage in a multitude of equipments. The fe 5680a features an extremely low silhouette unit for usage in a multitude of equipments. This item has been replaced by the fe5680a gps discipline module what is it. One load would test the clocks, the other load would accept a gps pps signal and would display the oscillators drift relative to gps.
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