Scope Z Mod socket.

[erasmo0]

Hello,I have a female plug on the back of my oscilloscope near “z-mod”... it is used to give GND to a circuit powered by a stabilizer or batteries ?

[Cobaltblue]

Z Mod is to modulate the Beam current to vary the brightness.

Sorry re reading this I don't know if this is a question? If its not actually to do with Z Mod we need to know the Make and model of the Scope.

Cheers

Mike T

[erasmo0]

Ah,yes I have another socket near it”GND” what’s the use of it?

[Dave Moll]

I would assume it is for the "earthy" or "grounded" return side of the signal fed into the z-mod socket. Incidentally, modulating the brightness on a 'scope is deemed to be the Z axis (at right-angles to the X and Y axes) i.e. moving towards or away from the viewer.

[erasmo0]

Hi,and ths for reply...so "z-mod" is grounded like the oscilloscope clip? I noticed another parallel socket to "z-mod" with a "gnd" symbol ... what's the use? I think, but I am not sure that it is used to connect the kit circuits to “ground” to measure them with the oscilloscope?

[Herald1360]

Is the Z-mod socket coaxial with its own shield ground? If so, no idea what the GND socket is for.

If the Z-mod socket is a single pole connector, then as Dave said, the GND socket is simply for the 0V or shield side of the cable(s) connected to operate the Z-mod circuit.

Once more..... what is the make and model of the oscilloscope?

[erasmo0]

Originally Posted by Cobaltblue

Z Mod is to modulate the Beam current to vary the brightness.

Sorry re reading this I don't know if this is a question? If its not actually to do with Z Mod we need to know the Make and model of the Scope.

Cheers

Mike T

...the scope is a GouldAdvance_os-250...the socket “z-mod axis” is an out or input? I can measure it witch tester? ...another socket “GND” and “Ramp” are output socket?

[Diabolical Artificer]

Z mod axis = input. Gnd = ground or chassis, try meter continuity. Ramp = output of timebase probably. Leave all alone for now. These only for advanced use.

Forgive the strangled English, trying to keep things very simple as there's a bit of a language barrier here.

Andy.

[erasmo0]

okay, I leave aside for the moment "z-mod" and "Ramp" ... but ramp can I measure it with another oscilloscope? ... "gnd" is used to give "0v" to "z-mod" or can it also be used for other purposes? for example in the measures of an integrated on a perforated base, ok?!

[Diabolical Artificer]

but ramp can I measure it with another oscilloscope?

Probably, try it.

Gnd = ground for all functions, check continuity between grounds to confirm.

for example in the measures of an integrated on a perforated base, ok?!

Not sure what you mean here.

[erasmo0]

excuse me, for my primitive, English ... oh, I mean a measurement with the oscilloscope to a circuit under test, that is on a "millefori" base I don't know what you call it ... in practice a circuit with one or more transistors in the air and powered not by batteries but by a stabilized dc power supply ... I don't know if it is enough to ground it 0volt with the probe (clip) or if I don't have to use the clip but only the unipolar gnd socket of the oscilloscope .. .thank you all for the advice received

[Diabolical Artificer]

excuse me, for my primitive, English

It's better than my primitive Italian, so no worries.

millefori? A glassware technique, wildflower, candle or honey?

I'll try and answer what I think your question is. An oscilloscope socket outer is tied to the oscilloscope's various circuit grounds but it is also connected to mains earth. If you are probing a circuit that uses a DC power supply and the thing (device under test = DUT) in question has an earth connection, you must only clip black scope lead to DUT (Device Under Test) ground or gnd. If you clip it elsewhere, things will go BANG.

I've drawn a picture to show what I mean, hope it answers your question. Andy.

[DMcMahon]

Maybe he means glass fiber/fibre (fibra di vetro) as some PCB boards can have a glass fiber substrate.

David

[Cobaltblue]

Originally Posted by erasmo0

I mean a measurement with the oscilloscope to a circuit under test, that is on a "millefori" base I don't know what you call it ... in practice a circuit with one or more transistors in the air and powered not by batteries but by a stabilized dc power supply .

I wonder if you mean a prototyping system where parts are plugged into a prototyping board just one example below.

Cheers Mike T

[erasmo0]

Originally Posted by DMcMahon

Maybe he means glass fiber/fibre (fibra di vetro) as some PCB boards can have a glass fiber substrate.

David

no,is similiar but noto fibre_glass...schedule nave many hole on the plastique board

[Station X]

How about posting some pictures? As we say "they're worth a thousand words".

[erasmo0]

Originally Posted by Diabolical Artificer

It's better than my primitive Italian, so no worries.

millefori? A glassware technique, wildflower, candle or honey?

I'll try and answer what I think your question is. An oscilloscope socket outer is tied to the oscilloscope's various circuit grounds but it is also connected to mains earth. If you are probing a circuit that uses a DC power supply and the thing (device under test = DUT) in question has an earth connection, you must only clip black scope lead to DUT (Device Under Test) ground or gnd. If you clip it elsewhere, things will go BANG.

I've drawn a picture to show what I mean, hope it answers your question. Andy.

...ah,understand Mr...the circuito on "millefiori" (hole)
Get the GND from the socket on rear of oscilloscopi,if copy correct answer

[erasmo0]

Hi,stationX ...the pic nave posted,cobaltblue for me...if i see correct is a "millefiori" boards

[erasmo0]

Ths to scheme,diabolical_artificer ...thanks, to all of you ... I really appreciated your advice

[Diabolical Artificer]

Some good guesses there, having read post #11 again on another day I think erasmo means do you have to ground a circuit under test with another ground from the scope as well as from the probe ground. millefori is a bit of a rabbit hole.

The answer ( I think) is only use probe ground. The probe ground also acts as shield or screen. The terminals on a scope (broadly speaking) are there to input signals into the scope such as Z mod, this is advanced stuff, don't worry about them.

The best way to find out how to use your oscilloscope is to use it often. In the manual there should be a section, something like "first time use of scope - first time operation", see attached. For first time use set the scope to these settings and start there.

Andy.