1. G E N E R A L 2. F E A T U R E S Dual power differential input a m p l i f i e r s used in the Y o u r K E N W O O D ' S Electronic V o l t m e t e r , Model V T - 1 7 1 , entire circuit provide a high reliability and good r"VT-171EJ , is a voltmeter of absolute-mean value...
3. S P E C I F I C A T I O N S The input attenuators are switched by a so-called " logic control c i r c u i t " so t h a t a desired range can [Meter Section] be selected w i t h use of a remote control device Messurable voltages :...
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S t a b i l i t y : W i t h i n ± 0 . 5 % of f u l l scale for R e l a t i v e humidity : Less than 80% ±...
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(3) dBm Scale How to Use Relative Reference Control In general, voltmeters have a reference level division The R E L A T I V E R E F control is kept a t " C A L " in of OdBm equal to 0.775V (1 mV power) induced across general cases of reading calibrated, absolute values on a 600O resistance load.
point A b e + 1 . 5 d B in the - 6 0 d B range and that of 6. A P P L I C A T I O N S point B - 4 d B in the +10dB range. The gain f r o m point A to B is The basic use of your V T - 1 7 1 ["VT-171EJ is to measure ( + l 0 d B - 4 d B ) - ( - 6 0 d B + 1.5dB) = 64.5dB.
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Root-Mean-Square and Peak Value Calculations F o r sawtooth waves, their f o r m f a c t o r is 2 / v Y o u r V T - 1 7 1 F V T - 1 7 1 E J , an voltmeter of absolute-mean the crest \ / 3 "...
new fuse f o r a specified value a s f o l l o w s : MAINTENANCE A C 100V, 120 : 0,2A A C 2 2 0 V , 240 V : 0.1 A (1) Removing the casing ( s e e F i g u r e 7 ) C H A N G E O V E R O F V O L T A G E IN S W I T C H I N G 1.
8. A L I G N M E N T Y o u r V T - 1 7 1 w a s precisely preset a t the f a c t o r y . How- ever, it can be aligned through the adjust holes located on the right-hand side w i t h leaving it housed in the casing, if required.