MEASURING
INSTRUMENTS
Page 5 of 6
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1.1.1 Operation keys
ON/OFF: On and off switch
IN/mm: Inch / mm conversion key.
ABS/zero: Conversion key between absolute measurement / relative measurement.
Absolute measurement: This is performed when the characters "INC" are not displayed on the
screen. The closed measurement jaws, are usually taken as the starting point of the
measurement. For external measurements such as measuring the diameter of a tree, the
starting value must be zero. For internal measurements, such as a hole, the preset value
should be "K" mm/inch. The absolute value measured corresponds to the preset value, plus
the movement of the cursor from the starting point of relative measurement (positive
numbers to the right, negative numbers to the left.
Relative measurement: with the characters "INC" display on the screen. Set the zero point by
pressing the "ABS/zero" button. The measured value corresponds to the movement of the
cursor from the relative zero point (negative numbers to the left, positive numbers to the
right).
SET: Pre-adjustment button.
When pressing this button, the preset value will be displayed (The factory default value is
zero). Press the SET button and at the same time the
▲
▼
or
button, at the top of the screen
the letters "SET" will appear on the screen, the instrument is ready for the entry of the
absolute value. Press and hold down the
▲
▼
or
button, the numeric value will decrease or
increase when the desired value is displayed, release the button, press the "SET" button
again and the word "SET" will disappear from the screen. Presetting is performed.
1.1.2 Data output
The data can be transferred to a computer or compatible printer thanks to an optional
interface (ART I001)
Working method of the interface: synchronous series.
Data:
binary code, 24 bit. Each datum will be sent twice
The transmitting cycle is 300ms (20ms in fast reading state)
Transmitting time: 0.5 ms.
The four contacts (L -> R):
positive power supply (+); Data (D); Pulse frequency (CP);
negative power supply (-).
Pulse range of data:
data level ≤ 0.2 V, level "1" ≥ 1.3 V.
Pulse frequency CP:
90KHz, effective for high electrical levels.
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