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"Skogsgurra (Electrical) 24 Oct 10 16:04 WROTE: About calibration: You do not need to calibrate x1. The reason is that since there is no series resistor, there is no parallel capacitor, and hence no need (or possibility) to calibrate it. So, calibrating x10 is fine. Nothing more needs to be...

I found the PROBLEM with the low reading Generic China made probe. With help of the Tektronix Yahoo group, I checked the celebration. I did calibrate the generic China probe on the new scope, BUT I had the switch in X1 not X10. I recalibrate it the probe with the switch in X10. It is fine now...

No the 22XX series don't have any on screen cursors or data. They are basic scopes. The confusion was that the Generic probes are reading different in X10. I did some more A B comparison and the Tek Probe is fine and the China made probe is reading low in X10. It has nothing to do with the...

Thanks. SO with the Tektronix scope I have, it does nothing since there is no automatic switching. However it does give different X10 results from the cheap China made X10 probe. Either that probe is off or that readout pin does something else. I was thinking it's a resistor to ground and does...

I have a Tektronix 2235A Oscilloscope that came with P6109 150KHz probes. Tektronix probes have that ground pin at the collar of the BNC. My generic China made X1/X10 probes that I had before don't have the ground pin. There is no automatic switching from X1/X10 range, the selector dial for...

Thanks MacGyverS2000, I assume you are talking microcontrollers. I did not consider that. I wad hoping to do it was a handful of discrete component, comparator IC's and so on. However if you have some simple Micocontrollers let me know... pixaxe-08 is something to look at.

This is what I want to do. Input: sawtooth from 0-8 volts with freq of 30 Hz to 60 Hz Output: a pulse when input is at a user set voltage between 1-7 volts. The pulse output is adjustable voltage (3-9v) and duration (5uS to 2mS) I'm flexible, it is not super critical. I just need a stable...

Thanks VE1BLL. How late are we talking? If the sweep rate is say 60 Hz Sweep is 1 mhz wide I'd like to keep the error to 100 Hz so that is 0.0001 of the sweep the time per sweep is 0.0166 So trigger time is 1.66 uS You think it can trigger in that time? I wounder if it will trigger at all? The...

Thanks benta that is a great suggestion.

NEED IC/circuit compares 2 RF FREQS, one fix and one sweeping. When they are same I want a trigger to send a 5 volt pulse. See picture below. Is there a IC chip for RF comparison detecting between two signals. The idea is compare a FIXED RF signal (any where from 455Khz to 12 Mhz at least...

Hi, New guy, mech engineer degree, airline pilot and experimental aircraft builder RV-4 & RV-7. Regarding thread 1-61524: key words, vent, outlet, scoop, exit. The question is about the so called NACA scoop, working in reverse, ie, for an exit air scoop, not as an inlet air scoop. Yes it...