GEK-45 464
I NSTRUCT I ON S :
BTJ I
G TS2
0 133
G IJ"4
RIJ"5
P I
I . APP LY RATED DC TO RELAY TERvl i N ALS
1 7
( + ) AN D
1 8 ( - ) .
2 . CH ECK TH AT TH E CT CU RRENTS I NTO TH E RELAY C I RCU I TS EQU AL
ZERO .
( PULL L0\1/ER CONN ECT I ON P LUG) .
3.
SET UP OSC I LLOSCOP E AND CONTACT C I RCU I TS AS SHOwN BELOW .
4 .
BE SU RE THAT THE OSC I LLOSCOP E POWER CORD I S UNGROUN DED .
POT
22K
I /2W
NO
T
CONTACT
T I M I NG PROCEDURE
I
-=: CH ANNEL
I
-, REF .
I
EXTERNAL
1
TR I GGER
PLACE TH E SCOP E I N A N EGAT I VE SLOP E EXTERN AL
TR I GGER I NG MODE.
DEP RESS TH E N . 0 . CONTACT AND NOTE TH AT UPON
RELEAS I NG TH E CONTACT TH E SCOPE TRACE I N I T I ATES .
FROM FACTORY CAL I BRAT I ON , A POS I T I VE S I GN AL AT
TP4
SHOULD
GO
N EGAT I VE I N
8
.
5
-
9 M I LL I SECONDS
AFTER TRACE I N I T I AT I ON
"A" CARD
TO ALTER OR READJU ST TH I S SETT I NG TURN TH E POT .
AT TH E BOTTOM OF THE "A" CARD CW TO I NCREASE
F I LL- I N T I ME OR CCW TO DECREASE TH E T I ME .
Fi g u re 3 4 ( 0246A2203- l ) Fi l l - i n Timer Setti ng Te st C i rcui t for the SBC Rel ay
5 6
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