AOIP PJN5208 - Page 1
Forum section: electronics / general

author: lionelkjh
author_rank: Frequent Contributor
timestamp: December 31, 2016, 09:53:39 am
content: Hello; I have a calibrator, which I am in the process of restarting. The internal batteries to power it were dead. After replacing and charging, it starts but it shows me "empty memory". The batteries have not been charged for a very long time, which resulted in a loss of the 9 measurement planes written into the internal memory of the calibrator. I think that to re-register these erased plans, it is necessary to use software with RS232 port. So my question is: would anyone have this software (because the calibrator should be almost 30 years old!), And most importantly, how to connect it with the RS232 (because the connector does not match dutout to our current computers? Thank you so much for your help (attached photo)

author: lionelkjh
author_rank: Frequent Contributor
timestamp: January 03, 2017, 12:15:02 pm
content: oups

author: footware
author_rank: Newbie
timestamp: November 29, 2017, 04:54:28 pm
content: Hello!I have the same device with his user manual in french. This manual content schematics and calibration process.If this topic is always alive, I can scan this manual for the community.For serial connect, you must have a version "D" of this device: other versions haven't this function.The message "empty memory" give information that all recorded programs are erased but you can rewrite that without the serial connection.

author: dj831
author_rank: Regular Contributor
timestamp: December 04, 2017, 07:20:07 pm
content: Hi there, funny to see that this is a device that is found mainly in FranceFor those who do not know AOIP, it was a famous French company 'owned' by employees themselves (a SCOP), hence the name AOIP, for Association des Ouvriers en Instruments de Précision. They were famous in telephony, and in resistor standards in 60's ('Pots AOIP' as we said). Unlike Adret, they still exist. That's all for the storyI too have a PJN5208D - I'm in France too. Apart the rough design - an OKW box with a keypad on it, it is an excellent process calibrator. Everything in these devices can be replaced, unlike ASICs found in most devices. Apart the keyboard, of course.To come back to the topic, you just need to replace batteries, since message 'Mémoire perdue' (lost memory) is related to user RAM, and this message is common to all these devices when power is lost (newer devices, like Calys-5 behave same way - apart that user RAM is stored in a DS1230).IIRC, you don't need serial, since this memory is used to store your values and ramps. Calibration data is stored in an EEPROM. All values and ramps are entered thru keyboard (if it can be given the name of 'keyboard'). But il case you'd like to, serial comm. is performed from the 3.5mm jack, having just GND.TxD and RxD connected. If you haven't the option fitted, do it yourself, by soldering pads 2 & 3, and by adding an LT1080 and few components. Note: when you replace batteries, be careful if you solder tabs to your new batteries - not recommended since batteries may explode due to excessive heat applied with your soldering iron. And the 2+1 pins tabs used are quite uncommon ...You can find attached document showing you schematics of digital board (I scanned a long ago the manual too if needed). Enjoy !(Note : sorry to resurrect such an old thread, but it may help others having that device too)

author: langlv
author_rank: Contributor
timestamp: February 24, 2018, 09:05:29 pm
content: Hello,I have also this AOIP PJN5208 with it's vintage leather-like case. Old but still reliable. Will be super happy to receive a copy (scan) of the user manual.best

author: lionelkjh
author_rank: Frequent Contributor
timestamp: October 28, 2018, 09:15:21 am
content: Hello (a little late, for lack of time!); what I'm looking for is the software to reprogram the RAM because the measurement scales are erased; the batteries were old and totally empty ..... I have all the documentation and schemas of this calibrator, but I do not know if someone still owns the software. Can someone help me ??

author: Starski
author_rank: Newbie
timestamp: February 02, 2019, 07:19:18 pm
content: Bonjour Footware.Je viens de récupérer ce calibrateur dans la benne de ma société où j'ai fais une mission en intérim.à Priori il serait en état de fonctionnement mais n'est plus calibré.Cette documentation que vous proposez de numériser m'intéresse beaucoup ne serait-ce que pour savoir comment utiliser cet appareil.Si vous êtes disposé à m'en faire une copie électronique, vous me ferez vraiment plaisirVous pouvez entrer en contact avec moi par mail ou le faire ici sur le forum.Merci par avance.

author: footware
author_rank: Newbie
timestamp: February 06, 2019, 08:13:23 am
content: Hello.Theuser/service manualis now availlable.