------------------------ From: [email protected] Subject: ? on EN 50140 - help! Date: Tue, 6 Apr 1999 13:58:41 -0400 To: [email protected]
> > > Could someone please clarify the following : the test procedure for EN 50140 > states "the frequency range is swept from 80 MHz to 1000MHz, using the power > levels established during the calibration process, and with the signal 80% > amplitude modulated with a 1 kHz sinewave pausing to adjust the RF signal > level > or to switch oscillators and antennas as necessary" > > Does this mean that the modulation is to be turned on and off during the > stepping or sweeping of frequency? I have never heard of doing this but I > have > been asked to respond to the question. Let's re-write that thought: 1. The RF signal will be 80% amplitude modulated by a 1 KHz sine wave. 2. The RF signal power level will be that established during the calibration process. 3. The RF signal will be swept from 80 MHz to 1000 MHz. You may pause during this sweep to allow changes of test equipment. 4. If you pause during the frequency sweep, remember to reduce the power level to zero before entering the chamber or changing any test equipment. This protects your equipment and personnel. You may then re-apply the RF power and proceed with the remainder of the frequency sweep. > Can anyone shed some light as to why > someone would interpret it that way?? > > > thank you!!! > > Lisa I believe that some parts of the world still suffer from a critical lack of commas. This leads to an overdependence on compound sentences, with the subsequent inability to delineate dependent clauses. How I wish that we could recycle our surplus of semicolons; thus liberating the bound commas. And we could keep all the leftover free periods! ;-) Regards, Ed -------------------------- Ed Price [email protected] Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 List-Post: [email protected] Date: 04/06/1999 Time: 12:19:24 Military & Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -------------------------- --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
