Differences

This shows you the differences between two versions of the page.

--- equipment:oscilloscopeprobes [2019/05/12 23:12]
felix.h ↷ Page moved from oscilloscopeprobes to equipment:oscilloscopeprobes
+++ equipment:oscilloscopeprobes [2020/05/30 11:13] (current)
tggzzz
@@ Line 1: / Line 1: @@
 ===== Oscilloscope Probes =====
+Probes must be used with oscilloscopes, so it is necessary to understand //and apply// the information on the [[equipment:oscilloscopes|oscilloscopes]] page. If in doubt (particularly about safety), please ask before damaging equipment or people.
 ==== Safety ====
@@ Line 7: / Line 8: @@
 ==== Types of Probe ====
-There are many types of scope probe, including *1, *10 "high" impedance, *10 "low" impedance Z0 resistive divider, current, EHV, envelope, active, differential, isolated. Each has advantages and disadvantages, and some are essential in some situations. Hackspace only has the common-or-garden *1 and *10 "high" impedance probes, but it may be possible to borrow others from members.
+There are many types of scope probe, including *1, *10 "high" impedance, *10 "low" impedance Z0 resistive divider, current, EHV, envelope, active, differential, isolated. Each has advantages and disadvantages, and **some are essential in some situations**. See [[https://download.tek.com/document/60W_14232_9_MR_Letter.pdf|Tektronix' Probes and Accessories, Your Guide to Selecting the Right Probe]]
+Hackspace only has the common-or-garden *1 and *10 "high" impedance probes, but it may be possible to borrow others from members.
 Clearly scope probes are much //much// more than "bits of wire". They are surprisingly sophisticated pieces of technology containing very thin wires and precision components:
@@ Line 35: / Line 38: @@
 For more pointers about safety, choosing and using probes, plus when and how to make your own probes, see [[https://entertaininghacks.wordpress.com/library-2/scope-probe-reference-material/|Scope Probe Reference Material]].
+There are some unused probes in plastic bags on or near the scopes. //Those should **not be used** routinely.// Why? See the warnings below about probes' fragility and ease of damage - and how expensive they are to replace. Instead **use the probes hanging on the equipment rack**. If it is necessary to use one of the probes in the plastic bags, please //put a message on the mailing list// noting why it was necessary. That will enable people to ensure we have the right equipment when members need it.
+Note: a scope without a working probe is as useful a bandsaw without a band: i.e. it is junk!
+{{ :equipment:oscilloscope_probes.jpg?nolink |}}
 ==== Probes with Scopes ====