Amprobe 15XP-A Podręcznik użytkownika - Strona 9

Przeglądaj online lub pobierz pdf Podręcznik użytkownika dla Multimetr Amprobe 15XP-A. Amprobe 15XP-A 19 stron. Compact digital multimeters

Testing Logic Levels (15XP-A only)

The 15XP-A tests logic levels for TTL logic. The meter displays 0o plus a ∧ for a

high-level (true) condition. The meter beeps and displays an 0o and a ∨ for a

low-level (false) condition. See Specifications for the logic 1 and logic 0 voltage

limits. Out-of-limits indications are displayed as 0o only, no ∧, ∨ or beep occur.

1. Set the Function Switch to LOGIC.

2. Connect the test leads: Red to E, Black to COM.

3. Connect the black lead to logic common.

4. Connect the red lead to the logic test point.

5. Read the display.

The meter emits a continuous tone when a test lead is placed in the mA or A input

jack and the Function/Range Switch is not set to a correct current position. (If the

meter is connected to a voltage source with leads connected for current, very high

current could result). All current ranges are protected by fast acting fuses.

The MIN MAX feature reads and updates the display to show the maximum or

minimum value measured after you press the MIN MAX button.

Pressing the MIN MAX button for less than 1 second will put the meter into a mode

of displaying the maximum or minimum readings. Each time the button is pressed,

the meter will cycle to the next display mode. Press the MIN MAX button for more

than 1 second to disable this feature.

Auto Power Off is a battery saving feature that puts the meter into a sleep mode if

the Function/Range Switch has not changed position in the last 10 minutes. To

wake the meter turn the Function/Range Switch to another position.

The Auto Power Off feature can be disabled to keep the meter from going to sleep.

To disable the Auto Power Off feature use the following procedure:

1. Set the Function Switch to OFF.

2. Press and hold the Range button while turning the Function Switch from OFF

to the desired function.

3. Release the Range button. The Auto Power Off feature will remain disabled until

the meter is turned off and then on.

The HOLD button causes the meter to capture and continuously display a

measurement reading. To use the HOLD feature make a measurement, and then,

after the reading has stabilized, momentarily press the HOLD button. You can

remove the test leads and the reading will remain on the display. Pressing the

HOLD button again releases the display.

See Figure

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