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5.8 Measuring frequencies
1. Plug the black lead into the "COM" input terminal and the red lead into the "V -Ω-
2. Turn the function switch to "Hz ADP" and use the function button to select frequency measurement (Hz).
3. Apply the probes to the signal source.
Note: The two lowest digits on the display may not be stable at frequencies of less than 1kHz or more than 20kHz.
5.9 ADAPT measurement
1. Plug the black lead into the "COM" input terminal and the red lead into the "V-Ω- " input terminal.
2. Turn the function switch to "Hz ADP" and use the function button to select ADP measurement (ADP).
3. Apply the probes to the signal source.
6. Changing batteries
This meter is powered by batteries. To change the batteries, see Fig.2 and follow the instructions given below.
1. Remove the probes from the item from which measurements are being taken and switch the meter off.
2. Unplug the leads from the jacks.
3. Lay the meter front-face-down on a work surface which will not damage its front face.
4. Unscrew the three screws in the bottom half of the case.
5. Carefully lever up the end of the bottom half of the case closest to the LCD display until it unclick from the bottom half.
6. Withdraw the battery holder from the top half of the case and carefully take the batteries out of it.
7. Fit new batteries into the battery holder and fit the battery holder back into the top half of the case.
8. Fit the bottom half of the case back onto the top half, making sure as you do so that you do not catch the lead from the
holder between the two halves of the case. See that all the seals are properly seated and that the two hooked lugs are
correctly engaged in the top half of the case.
9. Screw the three screws back in.
" input terminal.
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