KYORITSU 1009 - Manual (Page 11)

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● Current function (uA, mA, A)
When setting the instrument to any function of the "uA", "mA", and "A", DC Current Measuring mode has been selected in the initial condition.
By pressing "SELECT" Key, measuring mode changes.
"DC" → "AC"
7-2 RESET Key
By pressing "RESET" Key, all functions can be reset to their initial conditions.
Range setting, Mode setting and Data hold are all released and every function is back to its initial condition.
7-3 RANGE Key
At each "ACV", "DCV", "Ω", "uA", "mA" and "A" function, setting for the measuring ranges can be done manually by pressing "RANGE" Key. ("AUTO" symbol
disappears from the display.)
Every time when pressing "RANGE" Key, range moves.
In order to change from manual mode to Auto-ranging, there are following 3ways.
1) Press "RANGE" Key for 2seconds
2) Change to the other functions.
3) Press "RESET" Key
7-4 REL Key
The difference between measured values can be indicated on the display at each "ACV", "DCV", "Ω", "Capacitance", "ACA" and "DCA" function.
When pressing "REL" Key, "REL△"symbol lights up and the value under measuring is stored.
After that, the difference between stored value and measuring value is indicated on the display.
It can be released by pressing the "REL" Key again, changing to the other functions or pressing the "RESET" Key.
7-5 HOLD Key
The measured value can be hold at all functions.
By pressing "HOLD" Key, "H" symbol indicated on the display and the indicated value can be held.
By pressing "HOLD" Key again, "H" symbol disappears from the display and held data is released.
7-6 Hz/DUTY Key
Making measurement for frequency of input signal and DUTY(Pulse width / Pulse period).
(1) Change from normal measurement to "Frequency Measurement" and "DUTY Measurement".
Every time when pressing "Hz/DUTY" Key, it changes in the following sequence from normal measurement.
"Frequency" → "DUTY" → "Normal measurement"
To measure a frequency, measure the voltage on the electrical circuit in advance. Then press the "Hz/DUTY" Key to enter into frequency measurement.
Readings of frequency may fluctuate or be influenced under noisy environment.
Caution: Frequency measuring range at ACV, DCV, ACA, DCA Functions by pressing the Hz/DUTY Key is as follows.
Measurable frequency range: 1 to 10kHz
(2) Change Frequency and DUTY at "Hz/DUTY" function.
By pressing "Hz/DUTY" Key, it changes in the sequence : "Frequency" → "DUTY".