Digital Tube Tester Ecc-t For Ecc88/6dj8/e88cc/6922/cca

US $499.00

Papendrecht, Netherlands
Jan 29th

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This digital tube tester is part of my collection for some time, very handy unit if you mainly use ECC88/6DJ8/E88CC/6922/Cca tubes (CD/DAC's). This is a very nice and precise tube tester. See the last three photo's that shows the test results of a calibration tube from Jac Music that was rated 15.0/13.8mA vs. the 15.84/13.34mA that this unit it showing! ! WORLDWIDE REGISTERED SHIPPING INCLUDED WITH THIS OFFER ! E88CC/6DJ8/ECC88 series tube digital tester, model ECC-T OPERATION MANUAL 1. Features. With help of this digital tester, you can: - At any time with good accuracy check the emission current of installed in your amplifier or another device E88??, 6DJ8, E??88 tubes of various manufacturers (Siemens, Telefunken, Mullard, Valvo, Tesla, etc.) having the heater voltage 6.3 volts and filament current of 300 - 365 milliamps, by measuring the emission current (anode current) and find out whether they require replacement. - Check the quality of the newly purchased tubes of this series, as well as match them in pairs in accordance with their anode current values. - Provide an activation of tubes that have not been used for many years (Old Stock), see Fig. 1, Fig 2. - Check the emission current of tubes which have too low emission current, before and after the rejuvenation (increasing the emission current), (see other auction “E88CC/6DJ8/ECC88 series tube rejuvenator, model ECC-R”). The anodes current monitoring is provided with the tester in accordance to the specifications and recommendations of the most of tube manufacturer's. 2. Specifications. The tester power supply 220 volts AC (180 ? 240AC) Filament voltage of tubes 6.3 volts DC Filament current 300 ? 365 mA DC anodes voltage +90 volts DC grids voltage -1.3 volts Measurement error of the anode current + / - 2% Measuring range of the anode current 0 - 20 mA The tester is compatible with the following tubes, which have the Noval N9B socket: E88CC, E88CC/01, CCa, ECC88, E188C, E188CC, E288CC, ECC868, 6DJ8, 6922, 6922-WA, 7308, 8223, CV4108, CV4109, CV4110, CV5231, CV5354, CV5358, CV10320, CV2492, CV2493, CV8065, 6N23P, 6N23P-EB The tester is NOT compatible with the following tubes: 7DJ8, PCC88 3. Working with the tester. - Plug the AC adaptor into a correct household electric outlet with AC voltage which corresponds to the tester specifications. - Insert the tube into the socket. The LED on the adaptor should light steadily. If it is blinking, this is indicating that the tube is not in order (most likely short circuit of the electrodes inside). - If the tube is in working condition, you will see the growing of the value on the digital display after a few seconds. Make sure that both the filaments lit. Wait as long as the anode current on digital display getting stabilized at least in the third decimal position. Set the switch to the left position, read the anode current value of the first (left) triode and write it down. - Turn the switch to the right position, read the anode current value of the second (right) triode and write it down too. Note 1: Tubes which were not used for long time (Old Stock), require a period of activation to get stable parameters, sometimes for a couple of hours (see figures). Therefore, for more accuracy of the value of the anode current determination, leave a tube installed in the socket of the tester for a couple of hours, with periodic (at least once per half of hours) putting the switch from one position to another, and only then read anode current values for both triodes. Note 2: If after inserting a tube into the socket you see zero values on the panel for a long time while both the filaments lit, this means there is a problem with the tube condition (mostly an electrode disconnection inside). Note 3: Floating the value in fourth decimal position of the panel did not indicate a problem with a tube or the tester, it is normal, because the control of the anode current in accordance with the recommendations of tubes manufacturers did not provide its self-stabilization (the presence of the cathodes auto-bias). Note 4: If you buy Old Stock tubes, which did not undergo the process of activation, it should be noted that the actual value of the anode current for some of tubes may significantly differ from those stated by the seller. This may be important for matching the tubes in pair. Therefore it is better to buy such tubes for which the seller declares that the value of the anode current was measured after providing the activation procedure. Caution! Do not open device housing and adaptor. Do not use the device in a damp environment. Clean the device with a dry cloth. Unplug the adaptor from outlet before attempting of cleaning.

Condition:

Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. ...

Model

ECC-T