Iwatsu SS-623S Instruction Manual page 25

c) Turn the screwdriver while watching the monitoring device to
perform zero point adjustment.
CAUTION
(6) Energize the object to be measured, and then observe and measure
the output with the monitoring device.
・
When adjusting the DC offset voltage (zero
point), use
Adjustment Screwdriver, align the tip of the
screwdriver with the adjustment slot, and turn
it without applying excessive pressure. The
required rotation torque is less than 20 mN･m
If using a screwdriver other than the accessories or
applying excessive pressure to ZERO ADJ of the main
unit while you don't align the included accessory
Adjustment Screwdriver with the adjustment slot, you
may damage the main unit or the tip of the screwdriver.
Chapter 4 Measurement
the included accessory
.
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