Products > Test Equipment
List your test equipment "scores" here!
Neomys Sapiens:
--- Quote from: MadTux on April 26, 2019, 03:52:01 pm ---
--- Quote from: Neomys Sapiens on April 20, 2019, 02:34:26 am ---
--- Quote from: 0culus on April 19, 2019, 11:02:00 pm ---Which one are you talking about? Among the other plugins I'm going to be getting is another 7A26 dual trace amplifier. The 7A19 is a 600 MHz 50 ohm amplifier designed for reaching the rated bandwidth of the 7904A (500 MHz).
--- End quote ---
I was referring to the 7A13 differential comparator plugin.
--- End quote ---
New LED display version of 7A13 is one of the best general purpose plugins for 7000 scopes. Has often dodgy relays inside that are difficult to replace, however.
It's like a 4digit DVM coupled with scope display, if one side of the differential amplifier is fed from internal voltage source with LED display. Great for checking power rails.
Or it can be used as a differential amplifier with both probes connected to DUT. Great to measure things like current or some signal with large voltage offset.
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It's clear to me now. I was mentally led astray by the designation as a comparator. So I expected it to act like a variable threshold input, the output of which would be a digital signal on the scope. Then I wondered why someone would want that.
med6753:
This has already been posted in the TEA thread but I guess I'll toss it in here too because it is a true "score"
Tek 7904 with 7A24, 7A26, and 2 - 7B80. All for $100 USD. Caveat is that the 7904 doesn't power up but it's the famous "tick-tick" of the switch mode supply trying to come up. Should be an easy fix.
rastro:
--- Quote from: med6753 on April 27, 2019, 09:33:39 am ---This has already been posted in the TEA thread but I guess I'll toss it in here too because it is a true "score"
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That is an extremely clean looking unit - must have been kept in a lab environment and well cared for.
Neomys Sapiens:
On the first look this does not seem to be TE related, but I did make a cheap catch at 20€ for this assortment of crimp contacts for various Mil connectors. Most are 26482 and 38999 luckily, where I'm fully equipped with tooling.
TE related it is, because a lot of them will go into the production of adaptors, so that I do not have to sell someones organs because POMONA.
Neomys Sapiens:
And Shakalnokturn did just prove that I was wrong. The one I'm after is not the B1024, but the B1023.
So we have the following Designations:
1st Series
B1020 (no buttons - no additional functions, no RMS) Gossen: ????, Norma: ????
B1021 (8 buttons - Hold, MinMax, manual range, RMS?) Gossen: MAVO20, Norma: MP12
B1022 (15 buttons - as above, +dB, Limits, frequency and type K temp., RMS) Gossen: MAVO30, Norma: MP13
B1023 (15 buttons - as above, + time recording, RMS) Gossen: ????, Norma: MP14
The B1022 and the B1023 are distinguishable by the second pushbutton from the right in the lowest row, which is only +/- on the 1022 and has a shift function 'Time' on the B1023) And 'Time' does not mean merely elapsed time, but you can set a RTC and any min/max event or limit violation will be recorded with the time of occurrence.
THAT is the function I'm after. And now we know that I don't get it with the MAVO30. :( :(
then came a second series in the same form factor:
B1024, which has 4 pushbuttons and no current range, but a special range for current clamps with voltage output. It could also do temperature by PT100 and AC voltage with 1kOhm/V.
B1025, which has 6 pushbuttons, normal current ranges and all of the above plus min/max, and a range for current clamps with current output.
B1026, with 7 pushbuttons, RMS, all of the above + frequency, capacitance and a backlight.
B1027, which I do not know
B1028, with 11 pushbuttons, TRMS, all of the above, plus relative, limits and a zoom function for the bargraph.
I do not know, whether there were Norma/Gossen equivalents to those later ones. There is a Norma DMM950 with the same form factor, which has 12 PB. Here is some additional info:
https://sigrok.org/wiki/Norma_DM950
but that can't be totally correct regarding the equivalencies.
Remarks:
The first series was listed in the Siemens catalogue of 1987, together with the new analogue/digital hybrid B1012.
The Gossen models were all BEFORE Gossen did go together with Metrawatt.
The later series is often seen with a rubber protector, the earlier ones not.
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