― 24 ―
― 23 ―
Contact us for repair.
START
Meter/Test leads damaged?
①
Connect the red plug of the test lead to measuring
terminal and the black one to the COM terminal.
②
Set the function selector to .
③
Press the SELECT button to select the continuity check ( ).
④
Short-circuit between the red and black test pins.
Ω turns on?
Beeper sounds?
Finished
Does not turn on.
Does not sound.
Turns on. Sounds
Looks OK
Damaged
*In the case nothing is displayed, check for the battery.
5-2
「 」
(Max. rated input voltage: 1,000V dc/ac,
Initial impedance: 3 kΩ)
• Automatic measurement for Ω
・
V under Low Impedance
This AutoΩ
・
V function automatically selects measurement
function of DCV, ACV or Ω (Resistance) based on the input
between the test leads.
•
With no input, the meter displays “Auto” when it is ready.
•
When a signal out of -1.0 to 1.5V dc or 3V ac up to the rated
1,000V is present, the meter displays the voltage value in
appropriate DC or AC, whichever larger in peak magnitude.
• With no voltage signal but a resistance below 60MΩ is
present, the meter displays the resistance value. When below
the continuity threshold (20Ω to 300Ω) is present, the meter
further gives a continuity beep tone.
Auto Ω
・
V mode input impedance increases abruptly from initial 3kΩ
to a few hundred kΩ’s on high voltage hard signals. “LoZ” displays on
the LCD to remind the users of being in such low impedance mode.
Peak initial load current, while probing 1000V ac for example, can
be up to 471mA (1000V x 1.414 / 3kΩ), decreasing abruptly to approx.
3.1mA (1000V x 1.414 / 460kΩ) within a fraction of a second.
Do not use AutoΩV mode on circuits that could be damaged by
such low input impedance. Instead, use function selector or
high input impedance voltage modes to minimize loading for such
circuits.
WARNING
Summary of Contents for DMM PC720M
Page 1: ...PC720M DIGITAL MULTIMETER 取扱説明書 INSTRUCTION MANUAL ...
Page 18: ... 32 31 備 考 時 に は バ ー グ ラ フ は 表 示 さ れ ま せ ん ...
Page 20: ...m m D 36 35 備 考 m m m m D 時にはバーグ ラフは表示されません ...
Page 24: ...T1 T1 T2 T1 T2 44 43 ...
Page 29: ...μ μ μ μ μ μ Hz 54 53 ...
Page 42: ...PC720M DIGITAL MULTIMETER INSTRUCTION MANUAL ...
Page 59: ... 32 31 Note The display style of or does not show the bar graph ...
Page 61: ...m m D 36 35 Note The display style of m m m m or D does not show the bar graph ...
Page 65: ...T1 T1 T2 T1 T2 44 43 ...
Page 70: ...μ μ μ μ μ μ Hz 54 53 ...