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Re: DM501A Input Leakage Source
Roman, I¡¯m seeing somewhat less compared to what you see on the 200 mV DC range. And it varies between plug-ins with one being ~6 mV highest and the lowest being ~2 mV. Of course shorting the input
By Greg Muir · #192778 ·
Re: Tektronix P6021Current Probe Termination
That's too expensive for me.? It's nothing more than the ring and BNC from a standard tektronix probe with the ID pin shorted to ground.? I need to get around to making one. Harvey
By Harvey White · #192777 ·
Re: Tektronix P6021Current Probe Termination
If you are going to use the P6021 with a 7A14 the part number of the adapter is 131-0750-00. There is a guy peddling the adapter in new condition on ePay. The 7A14 can also use the P6019, P6020 and
By Greg Muir · #192776 ·
Re: 524D RCA customized scope on the big sales platform
Steve, You are correct. While working in Denver television at the ripe old age of 18 I worked with RCA TR-3, TR-4 and TR-70 machines and all had built-in video monitors and scopes. The scopes were
By Greg Muir · #192775 ·
Re: 524D RCA customized scope on the big sales platform
In almost every case, studio VTRs used Tektronix waveform and vector scopes. B&W picture monitors in VTRs tended to be Conrac, but most color picture monitors in Ampex VTRs were Tektronix 650 series.
By greenboxmaven · #192774 ·
Re: 524D RCA customized scope on the big sales platform
If I am not mistaken, the big RCA 2¡± quad video recorders used by most studios had both a Tektronix waveform monitor and vector scope built into them. [email protected]> wrote:
By stevenhorii · #192773 ·
Re: 524D RCA customized scope on the big sales platform
The 524 series scope was designed specifically for measuring video signals. A later model ¨C the 524AD ¨C was included as part of the RCA station ¡°package¡± (RCA demanded stations buy only RCA
By Greg Muir · #192772 ·
Re: 524D RCA customized scope on the big sales platform
Until Tek starting building their own CRT's in 1953, they were purchasing CRT's from RCA and Dumont, who were competitors. Tek wasn't getting the best quality tubes, so they made a point of putting
By Bob Haas · #192771 ·
Re: 524D RCA customized scope on the big sales platform
It is the standard graticle used to read a NTSC video waveform: the zero is, well, zero - the transition between video and sync the sync pulses are displayed below the line - ideally down to 40 the
By Richard Loken · #192770 ·
Re: 524D RCA customized scope on the big sales platform
Jeff, https://thediagram.com/17_3/waveform.html https://www.broadcaststore.com/pdf/model/793698/TT148%20-%204053.pdf https://download.tek.com/document/25W_7247_1_rfs.pdf These should help. I will
By Mark Vincent · #192769 ·
Re: 524D RCA customized scope on the big sales platform
Video signal is coded as black ~ 10% (dashed line is at 7.5%, probably black level spec) white is 100%, sync pulses are at -40% (bottom half graticule). The reason for 0 to 100% and -40 to 0% ranges,
By Ozan · #192768 ·
Re: 524D RCA customized scope on the big sales platform
I couldn't find the listing. Can you make the pics available somewhere? Is it an ordinary vectorscope graticule? e.g. Tek 1720, etc. --Toby >
By toby@... · #192767 ·
Re: Tektronix P6021Current Probe Termination
The probe and its termination (passive, 134, or 7A14) are designed as a system. As you can see in the P6021 manual, the Passive Termination box is a complex RLC network with several calibration
By Dave Wise · #192766 ·
Re: 524D RCA customized scope on the big sales platform
I'm not interested in this specific scope, but I grabbed the pictures for both the RCA affiliation, and the visible graticule, which I don't see mentioned on the TekWiki. I am almost completely
By Jeff Dutky · #192765 ·
Re: Tektronix P6021Current Probe Termination
Will it work better with no termination box if I use a 50 ohm oscope input? What termination is it looking for?
By Jimbert · #192764 ·
Re: Tektronix P6021Current Probe Termination
You can also use a 7A14 plugin, IIRC.? It switches between probe types based on a ring, which is in a small adaptor that you attach to the probe. Compensation for both probe types is different.
By Harvey White · #192763 ·
Re: Tektronix P6021Current Probe Termination
The P6019/P6020/P6021/P6022 current probes MUST use either the appropriate termination box, or a Type 134 Current Probe Amplifier. Otherwise the frequency response will be poor since the probe portion
By Dave Wise · #192762 ·
524D RCA customized scope on the big sales platform
While searching, I stumbled over a kind of rare (I guess) item: a Tek 524D made for RCA: https://www.ebay.com/itm/175251862529 Not affiliated with the seller... Chris
By ChrisBeee · #192761 ·
Tektronix P6021Current Probe Termination
I have a P6021 current probe but no termination box for it. Is the termination box necessary to use it and what are the consequences of not using it? What is the impedance of the probe output without
By Jimbert · #192760 ·
Re: 2445 EPROMs
OOPS! Make that replaced with an MC68A02. My bad.
By Jimbert · #192759 ·