‰  NOW 30 WPM  ‰  TEXT IS FROM OCTOBER 2017 QST  PAGE 40‰

THE READING, BUT THE NUMBERS WOULD BE CORRECT.  THIS IS FAR DIFFERENT FROM
AN ANALOG METER, WHERE CONNECTING THE LEADS BACKWARDS MIGHT DAMAGE THE
METER WHEN THE MOVING NEEDLE HITS THE RETAINING PIN ON THE METER FACE.
THERE IS ONE MORE PROBLEM WITH THE METER ACCURACY, AS WITH ANY DIGITAL
DEVICE DISPLAYING NUMBERS.  THE METER IN FIGURE 10 IS DISPLAYING 9R21 V.
THE LAST DIGIT IS ROUNDED OFF, JUST AS YOU MIGHT DO WHEN CALCULATING WITH
PENCIL AND PAPER.  THE ACTUAL VALUE MIGHT BE 9R210 OR PERHAPS 9R213, OR
EVEN R208, BUT IS ROUNDED TO 9R21 V.  WHILE THIS CAN SIMPLY BE AN ANNOYING
PROBLEM, IT CAN ALSO BE A VERY SERIOUS ERROR IF THE METER SELECTS THE
LOWEST POSSIBLE RANGE AND ONLY ONE SIGNIFICANT DECIMAL DIGIT IS SHOWING FOR
EXAMPLE, 0R03 V.  THEN YOU ARE NOT SURE IF THE TRUE NUMBER IS 0R02, 0R03,
OR 0R04 V.  OTHER FUNCTIONS  THE MODEL SHOWN HERE HAS A BUILT IN BATTERY
TESTER.  SELECTING ONE OF THE FOUR BATTERY SCALES ALLOWS YOU TO PLACE THE
LEADS ACROSS THE BATTERY UNDER ITS INSTALLED AND WORKING CONDITION, AND GET
AN INDICATION OF THE BATTERYS CONDITION BY LOOKING AT THE THREE LEDS.
GREEN MEANS OKAY, YELLOW MEANS QUESTIONABLE, AND RED MEANS FULLY
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ