KYORITSU 4140 - Manual (Page 19)

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Fig.7-5
7.3. Operating instructions for LOOP and PSC/PFC
7.3.1 Initial Checks: to be carried out before any testing
1. Preparation
Always inspect your test instrument and lead accessories for
abnormality or damage: If abnormal conditions exist DO NOT
PROCEED WITHTESTING. Have the instrument checked by
your distributor.
(1)OperatethePowerswitchandturnontheinstrument.(Pressthe
Powerswitchforatleast1sec.)
Pressanyofthefollowingswitchestoselectafunction.
・ L-PEATTON:forLine–Earthloopimpedancetests(withATTon)
・L-PEATTOFF:forLine–Earthloopimpedancetests
・L-N/L-L:forline-neutralorline–lineloopimpedancetests
●ATT enables a measurement without tripping the RCDs with the
rated residual current of 30mA or more.
(2)InserttheTestLeadintotheinstrument.(Fig.7-6)
Fig.7-6
2. Wiring Check
Aftertheconnection,ensurethatthesymbolsforWiringcheckon
theLCDareinthestatusindicatedinFig.7-6beforepressingthe
test switch.
If the status of the symbols for Wiring check differ from Fig.7-6