20 Dec
2002
20 Dec
'02
3:56 p.m.
On Fri, 20 Dec 2002, Gunther Schadow wrote:
Hehe, you must have very special probe connectors.
Here's what I
did as the cheapie that I am: I took an old Ethernet BNC cable,
cut it in half and behold I had two scope probes :-). As an added
value that I still haven't gotten around doing, I will add some
cable-shoes at the end. Works for my purposes.
-Gunther
Add a 453 Ohm non-inductive series resistor on the end of the cable (and a 50
Ohm terminator on the scope end if you do not have 50 Ohm inputs) and you will
have a 10/1 probe with 500 Ohm input impedance and at least a couple hundred
MHz bandwidth...
If the 500 Ohm impedance bothers you just remember that a standard 20 pF input
impedance scope probe has about the same capacitive reactance at 16 MHz...
Tothwolf wrote:
Peter Wallace
I *finally* managed to get probes for my
Tektronix 2213 scopes late this
last week. I still can't quite decide which project to tackle first ;P
Unfortunately, most of the P6120 probes are missing the slip-on clip and
ground leads, so I appear to have some more searching ahead of me. Only
one probe has a ground lead, which has obviously been damaged and repaired
by a previous owner. I suspect and hope that the ground leads and clips
will be easier to find than the rest of the probe. Does anyone know
offhand of a source for these parts? I don't expect Tektronix to have the
parts still available, since they told me that they sold off all parts and
spares for the 2213 series to GTE. The last time I talked to someone at
GTE about 2213 parts, they were less than helpful, and suggested I either
send them the scope for repairs (it just needs the plastic front panel) or
go buy a new scope.
-Toth