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Looking to ID a diode in a 1S1 sampling plug-in
Ah, thank you, I'll look in to replacing it with a FET and will see what I have in stock. I presume I'll have to do some modifications to keep the heater chain current right: it looks like that intera
Ah, thank you, I'll look in to replacing it with a FET and will see what I have in stock. I presume I'll have to do some modifications to keep the heater chain current right: it looks like that intera
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cmjones01
· #179693
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Looking to ID a diode in a 1S1 sampling plug-in
I've had a look in my 1S1 and the tunnel diodes seem to be a mix of tiny beads like the ones in the OP's photo, and the gold "top-hat" style package I've always associated with Tek tunnel diodes. One
I've had a look in my 1S1 and the tunnel diodes seem to be a mix of tiny beads like the ones in the OP's photo, and the gold "top-hat" style package I've always associated with Tek tunnel diodes. One
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cmjones01
· #179691
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Seeking attenuator heads for P6032 cathode follower probe for 1S1 etc
I've recently bought a P6032 with most of its accessories (the probe-to-BNC and probe-to-GR adapters are missing) from a seller in Germany. I know he has another P6032 set for sale right now, with man
I've recently bought a P6032 with most of its accessories (the probe-to-BNC and probe-to-GR adapters are missing) from a seller in Germany. I know he has another P6032 set for sale right now, with man
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cmjones01
· #179681
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Looking for P6042 current probe transformer/hall-sensor replacement instructions
Is this anything like the procedure for the A6302 current probe? I've got a couple of those here and seem to remember that there is an adjustment for the offset voltage of the hall effect sensor. In e
Is this anything like the procedure for the A6302 current probe? I've got a couple of those here and seem to remember that there is an adjustment for the offset voltage of the hall effect sensor. In e
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cmjones01
· #179642
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Looking to ID a diode in a 1S1 sampling plug-in
I don't know about the diode, but I'm following this thread with interest. I also have a 1S1 in good physical shape, but it's Heerenveen-manufactured serial number 700183. It also has the trace perman
I don't know about the diode, but I'm following this thread with interest. I also have a 1S1 in good physical shape, but it's Heerenveen-manufactured serial number 700183. It also has the trace perman
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cmjones01
· #179487
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P6021 Noise Problem?
This. It does sound like external interference may be the problem. For a while I had an office from whose window the tower of the infamous "Palace of Culture and Science" building in Warsaw was visibl
This. It does sound like external interference may be the problem. For a while I had an office from whose window the tower of the infamous "Palace of Culture and Science" building in Warsaw was visibl
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cmjones01
· #179118
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[UK] 545A on eBay - Wigan
As well as the modified mains voltage switch arrangements, I note that it's had a different mains connector fitted. These mods are presumably part of its military history - looks like it's served time
As well as the modified mains voltage switch arrangements, I note that it's had a different mains connector fitted. These mods are presumably part of its military history - looks like it's served time
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cmjones01
· #178905
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Selenium rectifiers in Tek equipment
I'm looking forward to starting to use the 127, so I guess I'd better order some rectifiers. I have experienced a selenium rectifier expiring before, and it's not something I want to repeat... Chris
I'm looking forward to starting to use the 127, so I guess I'd better order some rectifiers. I have experienced a selenium rectifier expiring before, and it's not something I want to repeat... Chris
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cmjones01
· #178056
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Selenium rectifiers in Tek equipment
I've just taken delivery of a very tidy example of the Tek 127 Preamplifier Power Supply. I've often wished that my 535A had more horizontal bays, and now it can have them. I note that it has selenium
I've just taken delivery of a very tidy example of the Tek 127 Preamplifier Power Supply. I've often wished that my 535A had more horizontal bays, and now it can have them. I note that it has selenium
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cmjones01
· #178016
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The reason for Tek delay lines
The Tek 7912AD here on my desk uses a coax delay line. It really is just two pieces of coax (one blue, one blue with a black stripe, if I remember correctly) coiled up at one side of the instrument. I
The Tek 7912AD here on my desk uses a coax delay line. It really is just two pieces of coax (one blue, one blue with a black stripe, if I remember correctly) coiled up at one side of the instrument. I
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cmjones01
· #177835
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User Experience of Sampling Scopes
yahoo.com@groups.io> wrote: I have a confession to make. I am "that guy". The one who commits sacrilege by using cheap Chinese SMA connectors and cables with his 20GHz wonder-scope. And they're just f
yahoo.com@groups.io> wrote: I have a confession to make. I am "that guy". The one who commits sacrilege by using cheap Chinese SMA connectors and cables with his 20GHz wonder-scope. And they're just f
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cmjones01
· #177591
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User Experience of Sampling Scopes
I'm a big fan of my CSA803A (which is best thought of as an 11803A). Even though it's really old, it does things that would need crazy amounts of money to achieve with modern gear. I can look at the i
I'm a big fan of my CSA803A (which is best thought of as an 11803A). Even though it's really old, it does things that would need crazy amounts of money to achieve with modern gear. I can look at the i
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cmjones01
· #177576
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What are the differences between the P6302 and A6302 current probes?
I have a small collection of these probes in various states of disrepair. My one "known good" one is an A6303. I find it really handy when working on power supplies and motor drivers - the fast respon
I have a small collection of these probes in various states of disrepair. My one "known good" one is an A6303. I find it really handy when working on power supplies and motor drivers - the fast respon
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cmjones01
· #177447
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Tektronix 7L12
Also, on my 7L12, the MHz dial is really very approximate: it's usually within about 20MHz of the correct value, drifting somewhat as it warms up. Mine might be broken, of course, but it's always been
Also, on my 7L12, the MHz dial is really very approximate: it's usually within about 20MHz of the correct value, drifting somewhat as it warms up. Mine might be broken, of course, but it's always been
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cmjones01
· #177258
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1S2 plugin wanted in Europe
Tek fans, I'm afraid I haven't been active on the list for a while because emails started bouncing for some reason and groups.io cut me off. I think I've fixed that now, though, so can join in again.
Tek fans, I'm afraid I haven't been active on the list for a while because emails started bouncing for some reason and groups.io cut me off. I think I've fixed that now, though, so can join in again.
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cmjones01
· #176414
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A6302/6303 current probe Amphenol 165 connector
I cheated and removed the o-rings in the end. I have no requirement for environmental sealing for this connector, and nothing around it is sealed, so I decided they were just going to make assembly mo
I cheated and removed the o-rings in the end. I have no requirement for environmental sealing for this connector, and nothing around it is sealed, so I decided they were just going to make assembly mo
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cmjones01
· #166798
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A6302/6303 current probe Amphenol 165 connector
Thank you, Albert, that was exactly what I needed. I'd removed the outer nut which secures the cable strain relief sleeve, and then the aluminium sleeve with the flats which seemed to be part of the c
Thank you, Albert, that was exactly what I needed. I'd removed the outer nut which secures the cable strain relief sleeve, and then the aluminium sleeve with the flats which seemed to be part of the c
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cmjones01
· #166771
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A6302/6303 current probe Amphenol 165 connector
I'm wrestling with an A6303 current probe which has a broken wire inside the plug, but I can't figure out how to get the plug apart. I've managed to remove the cord grip at the rear (breaking several
I'm wrestling with an A6303 current probe which has a broken wire inside the plug, but I can't figure out how to get the plug apart. I've managed to remove the cord grip at the rear (breaking several
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cmjones01
· #166764
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Delayed trigger jitter on 535A
Rajesh and Nicolas, thank you for the responses. I've just discovered that the problem may actually be a phantom one: the signal I was measuring was derived from an Atmel XMega microcontroller running
Rajesh and Nicolas, thank you for the responses. I've just discovered that the problem may actually be a phantom one: the signal I was measuring was derived from an Atmel XMega microcontroller running
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cmjones01
· #165782
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Delayed trigger jitter on 535A
Tek fans, My much-loved 535A has been getting a lot of use over the last few weeks. It lives in my home lab which is where I'm now working due to the coronavirus situation. Generally it's been a delig
Tek fans, My much-loved 535A has been getting a lot of use over the last few weeks. It lives in my home lab which is where I'm now working due to the coronavirus situation. Generally it's been a delig
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By
cmjones01
· #165745
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