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The readout operates in parallel with the BCD output from U2015 (frequency counter and latch). I would start by tracing backward from there. One or both of the digital signals (E or F) from schematic

Hi all, I have a 7L13 Spectrum Analyzer out in the field, it's not in front of me right now but I will pick it up later this week. I've seen the unit and the 'Center Frequency' LED read-out is stuck,

schematics and pictures pls. I could not find any line receivers that have ecl output, single ended input and trigger on selective voltage.

For 2 pcs at that price I'm breaking the bank! Plus they ship US only.

Glenn, 3 of the 5 digits work OK. My original description of the problem was not clear. One digit is missing the center horiz segment, another digit is missing the top horiz segment. The other 3

You don't generally need impedance matching.? The 'scope input won't load a 50 Ohm source much.? I use a 50 Ohm termination without attenuation and the high impedance of the oscilloscope has

If those low profile socket elements are the ones I am thinking of, they are called Miniserts. I have had at least two incidents now where a Minisert was open and reseating the lead at least

So, I've had the idea of building a 50 ohm fixed 10x attenuator to use inline with a 50 ohm cable. What kind of impedance matching should I use for the 1meg ohm on the scope?

If it ever comes up to the top again, it would be really interesting to see the board and hear more about the problems you ran into. It sounds like you were trying to achieve similar performance to

cleyson@... wrote: Yep, although going the other way and plugging a right angle -07 into a 7D01 would likely not be so successful. -ls-

I know I've let this thread go cold, but I assure members it wasn't out of neglect. For one thing, I was advised to read the manual, and I have been doing so. In the meantime, I had been monitoring

It should be 9 Meg ohms. Then 90% of the signal is dropped across the probes 9 Meg and 10% across the scope's 1 Meg input impedance, giving 10:1 ratio. The compensating capacitors across them are

wrote: I get almost exactly 9.00 MOhms on each of several different x10 probes within reach.

There are some on e bay

Hi David Fair comment, maybe you could make your own probes but I don't think you could build a 10 channel 1Meg 5pF FET probe for less than the $100 asking price. You need the 25 way micro D

The publication on scope probes mentioned earlier is good and I am working my way through it. I already had it in my document collection and it was on my reading list. If I ohm out a 10x 10Mohm probe

I have to disagree, the price of $100 per probe is not viable. The Tek 308 is a primitive 20MHz logic analyzer, it would make no sense at all to spend $200 to get it going. You could get a much better

These people seem to sell the ECI line, maybe they can help you? http://val-tec.tripod.com/

Hi http://www.ebay.com/itm/Tektronix-P6451-Data-Acquisition-Probe-Accessories-new-old-stock-/130818471576? Unused new old stock and comes with a full set of leads. Price might be more than you want to

Hi, Thanks to everybody that replied, and for the tips, had wondered about applying some oil but I am worried that in time it might get through to the pot track and damage it? I should say that the