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382357 Datasheet, PDF (7/12 Pages) Extech Instruments Corporation. – Ground Resistance Clamp-On Tester | |||
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High and Low Alarm
1. Turn the meter on by moving the rotary switch to the â¢))) position.
2. Press the FUNC button to view and adjust the âHIâ alarm value..
3. Press â² or the â¼ button to increase or decrease the value. Hold down the button to
increase the speed of adjustment. The value can be incremented from 0 to 1500 ohms
and then OL (overload). The value will roll over to 0 after OL is displayed.
4. Once the desired value is set, press the FUNC button a second time to view and
adjust the âLOâ alarm value.
5. Press the FUNC button three more times to exit the setting mode.
6. The meter will now compare the measured resistance value with the high and low
limits when the meter is set to the â¢))) position. If the reading is larger than the HI
value, the meter will beep and display âHIâ on the LCD. If the reading is lower than the
LO value, the meter will beep and display âLOâ on the LCD.
Data Logging
Setting the Sampling Time
1. Press the FUNC button three times until the âSECâ symbol appears in the LCD
display.
2. The sampling rate is now displayed in seconds.
3. Press theâ² or the â¼ button to increase or decrease the value. The value can be
incremented from 0 to 255 seconds.
4. Once the desired value is set, press the FUNC button several times until the
characters in the upper row of the LCD disappear.
Recording Data
1. Press the REC button to start recording data at the specified sampling rate. The
âRECâ symbol will appear on the top of the LCD display. To stop recording, press the
REC button. The âRECâ symbol will no longer be displayed on the LCD.
NOTE: Data logging will automatically stop if the memory is filled (116 records), or if the
meter detects a low battery condition.
NOTE: If the sampling interval is set to 0, only one sample will be recorded. To record
another sample, press REC again.
Recalling Stored Data
1. Press the FUNC button four times until the âNO.â symbol is displayed on the LCD. The
current record number will be displayed in the top row and the data will be displayed
below it.
2. Press the â² or the â¼ button to step through and read the data in the next memory
location. Holding down the button will increase the speed of the incrementing value.
Clearing Data Memory
1. With the meter powered off, press and hold down the REC button while turning the
meter on. The âCLâ symbol will appear on the display indicating that memory has been
cleared.
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382357 V1.1 03/09
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