isweek M9803R - RS232 C Communication; Buzzer Output; Low Battery Indication

10. RS232CButton(Thefunctionofcommunicationisoptionalbyuser.)
Press      buttontoenterthecommunication.YouwillfindthattheRS232Csignbeitlitonthedisplay.
Fixedonesideofcabletothemeterandconnectthe9pin?sterminalof cable to communicationport1or
port2ofpersonalcomputer. 
Executethesoftwaretotakethedataforyounecessary.
BuzzerOutput
2kHzbuzzersoundisoutputinfollowingcases:
1.  Whenoperatethekey.
2.  Whenoccurtheover-range.Except the measurement mode of Resistance(Ω),Frequency( Hz ),
Continuity(    )andDiode( ).
3.  Whenthecontinuitymeasurementresultislessthan40Ω.
4.  Whentherelativemodeisreleased.
5. When the mode is changed from manual to autor ange by operating the . Please refer the
timingchartforthetiming.
LowBatteryIndication
The "" markisdisplayedwhenthebattery load voltage dropsbelowaccurateoperatinglevel.
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