Preliminary Adjustments - Kopp GMT-12A Manuel D'utilisation

AC Voltage AC Voltage
Scale

Preliminary Adjustments

Fully seat the test leads in the correct input jacks. If necessary,
using a small fl at tip screwdriver, slowly turn the mechanical
zero adjustment screw clockwise or counterclockwise until the
needle indicator is directly over the three black zeros at the
left end of the scale.
Analog Meter:
Reading the Scale General
Resistance (Ohms - Ω)
Use the top scale for reading the resistance. If the meter is set
to X1k, multiply the resistance value by 1000Ω.
DC Voltage (V DC)
Use the middle scale directly below the mirror. Match the dial
setting to the highest number on the scale. If the setting does
not match one of the numbers, use a scale that can be easily
multiplied to give the setting (i.e. - for 500V, use the 50V scale
and multiply the reading by 10).
AC Voltage (V AC)
Use the same numbers and procedures as used for the DC
voltage setting, but use the scale directly below the numbers.
DC Milliamps
Use the same scale and procedure as used for the DC voltage
setting.
Decibel Gain (dB)
Use the scale marked dB to read decibels. Use the chart at the
right of the scale for proper conversion.
Resistance
(Ohms) Scale
dB Scale for Transis-
tor Gain Measure-
ment
10
DC Voltage &
Milliamps Scale
Common Mar-
kings for both
the AC & DC
Voltage Scales