eXact 240 - Page 9

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240-0664
SECT IO
-- - ---- - ------- ---~---------------------- --~----OPERATION
1. 2 .2 . OU FUT (CONTINUED
"! DC
LEVE:L
( s) 1A IN OUT PU T
(1) A PLiTUDE
(2) DC COMPON E
T • "
(3) STABILITY
(4)
IMPEDANCE
+
300 V T O AT LEAST 25v pp
Ftxto AT ZERO VOLTS OR VARI A BLE
FROM -13v T O +13v (MINIMUM RANGE)
50MV SHORT TERM '
150M V LONG TERM
INT i
I =
AP PRO'X ZOO ..Cl.
J5MA MAX
3MA AT -J3V
DC L.EVEl..
(c) PO L ARJTY
CiRCUI T ~ ROU O CA N BE I SOLATED FROM CAB I NET GROUNO BY
REMO ING TH ~ NTERCONNECTING ST~AP . T HE O UTPUT WILL
NOW BE rLOATI G• I F YOU DO NO T LOAD THE OUTPUT, TH fRE
WILL SE S O~ E HUM P ICK UP A ND A 1 µ FD CAPACITOR SHOULC BE
P L AC ED · BE TW EE TH E TWO GRO U ND POST S a
MA't1UM ELE VA T ION POTENTIAL -- 50 V
(o) DC LEVEL
THE ABOVE K ETC H t LLU STRATES THE OP~R TION ~NO RAN G£
o~ THE~ DC LEVEL POTENTIOMETER. WHEN THIS POTE NTIO-
MET ER IS JN HE "S\,,IIT 8 H£0 1f OR ll(,II P OSITION , THE WAVE-
FORMS SH OULD HA VE A CE NTER O DC L EVE L . INTERN AL AD-
J~ST M ENT S ON LL WAV EFORM E ASSURE THI T THIS CAN ALWAYS
B E TR UE. : THE SINE ANO SQ UA RE OFFSETS ARE SIMILAR TO
THE ABOVE TRIANGLE OFFSETS.