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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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test equipment
Hi all,
I have a signal which I need to measure during fabrication. The signal is a 2.88 MHz crystal and I need to know the signal level and frequency. A scope is a great device to do this but I really only need a display with frequency and signal level. A frequency counter would do the trick for the frequency measurement but can not locate one of these with a signal level indication. Any thoughts? pdrunen |
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test equipment
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#4
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test equipment
PDRUNEN
You could use a shortwave receiver locked onto or near the frequency, use the BFO or SSB mode to beat against the signal. A PC soundcard could measure the frequency error. If you need to know what direction the error is, tune lower by 1.0 KHz and measure the difference frequency, if it goes below 1 KHz the crystal is drifting low, higher than 1 KHz, it is drifting high etc. Some receivers have software signal strength meters that can be calibrated to give you a signal level indication. Look at some of the ICOM receivers for PC CIV control. Joe wrote: Hi all, I have a signal which I need to measure during fabrication. The signal is a 2.88 MHz crystal and I need to know the signal level and frequency. A scope is a great device to do this but I really only need a display with frequency and signal level. A frequency counter would do the trick for the frequency measurement but can not locate one of these with a signal level indication. Any thoughts? pdrunen -- Joe Leikhim K4SAT "The RFI-EMI-GUY" "Follow The Money" ;-P |
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