TELE-audiovision International —
6. How does a meter perform in extreme
cold or heat? To find out, they are put in
a cold chamber for two hours. Once they
are cooled down to -10°C they have to
undergo a measurement test cycle.
7. This employee places DEVISER pro-
ducts in the heat chamber, where they are
heated up to 50°C for two hours.
8. After both the cold chamber and the
heat chamber meters must survive a ten-
minute frequency response test without
showing any malfunctions. Shown here
are DS2400Q meters put to that strenuous