Amprobe PM51A Manuale d'uso - Pagina 6

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Frequency Function

Turn the rotary switch to the Hz position to select the frequency function.

This function is set only at the highest input sensitivity mainly for measuring small electronic signals

below 20 V ac rms.

1. Connect the test probes to the signal source.

2. Read the display.

Additional Features

HOLD and 30 ms MAX HOLD Modes

HOLD mode freezes the display for later viewing. Press the HOLD button momentarily to activate or

to exit the Hold feature.

MAX mode captures voltage signals that have durations as short as 30 ms (milliseconds) within a

single range, and has automatic up range capability. This feature is available in V dc and V ac

functions. Press the HOLD button for 1 second or more to activate or exit MAX mode.

Hazardous voltages present at test leads may not be displayed when in HOLD

mode.

Auto-ranging

If the function selected has more than one range, the meter will auto-range to the best range and

resolution.

Product Maintenance

Maintenance

Do not attempt to repair this meter. It contains no user serviceable parts. Repair or servicing should

only be performed by qualified personnel.

Cleaning

Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or solvents. If

the meter is not to be used for periods of longer than 60 days, remove the battery and store it

separately

If the instrument fails to operate, check battery, leads, and replace as necessary. Double check

operating procedure as described earlier in this manual. Refer to the LIMITED WARRANTY section

for obtaining warranty or repairing service.

XWWARNING