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FAQ's - Technical & General

Frequently Asked Questions
 Technical & General

General Questions
Q. Do you have a minimum order?
A. No... Every order, large or small, is important to us.

Q. Can you ship the same day I order?
A. 95% of our products are in stock and can be shipped the same day. 

Q. Can I try a probe and return it if I'm not satisfied?

A. Yes... If one of our products does not meet your expectations, call us first, then return it within two weeks. If the product is in new condition we will replace it or refund your money.

Q. Do you have manufacturing plants in other countries?

A. No... We need the jobs here in El Cajon, California.

Q. Will Probe Master make special probes & kits for our company?
A. Yes... We are always pleased to quote on special requirements.

Technical Questions

Q. What Probe Master probe is equivalent to the probe I am using now?
A. You can go to our home page and click on our Probe Cross Reference page or call us toll free and we will be happy to search our cross reference data base for an exact replacement.

Q. What specifications are most important when selecting an oscilloscope probe?

A. The first consideration should be to match the bandwidth and input capacitance of your scope. Secondly, choose a probe with a signal attenuation and cable length that best serves your needs. Keep in mind that the high input capacitance of a 1x probe will load your circuit the most. Also, the shorter the cable, the better the performance.
We find that our PM4901-2. switchable 1x/10x, 5 foot long probe is the most popular.

Q. Will Probe Master probes perform correctly on my Tektronix and Hewlett Packard scopes?
A. Yes... Probe Master has been manufacturing quality replacement probes for many years.

Q. Why do oscilloscope probes have a compensation adjustment?
A. The input circuit of every oscilloscope is different. When connecting a 10X or 100X probe for the first time it must be compensated to match the capacitance of your scope. If the probe is not compensated, the amplitude as well as the wave shape of the signal being tested can be distorted. Instructions for making this adjustment is provided with each new probe.

Q. Will Probe Master test leads fit my multimeter?
A. Yes... The 8000 and 9100 series test leads have been designed to fit Fluke, Wavetek, Hewlett Packard, Tektronix and other major brand multimeters.