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Konstante mA-Ausgabe
Wenn sich der Drehknopf auf Position OUTPUT mA [
befindet und die Anschlüsse OUTPUT mit einer
angemessenen Last verbunden sind, erzeugt das
Messgerät konstanten (mA) Gleichstrom. Das Messgerät
beginnt die Stromausgabe oder Transmittersimulation bei
0 %. Die Anpassung der Stromstärke erfolgt mit den
Druckknöpfen - siehe Tabelle 8.
Die Wahl der Funktion (Stromausgabe oder
Transmittersimulation) erfolgt indirekt, indem die
Messleitungen entweder an den Messgerätanschlüssen
SOURCE oder SIMULATE eingesteckt werden.
Wenn das Messgerät die eingestellte Stromstärke nicht
liefern kann, da die Last zu hoch oder die
Schleifenspannung zu niedrig ist, werden an Stelle der
numerischen Anzeige Bindestriche (-----) eingeblendet.
Sobald die Impedanz zwischen den SOURCE-
Anschlüssen niedrig genug ist, nimmt das Messgerät die
Stromausgabe wieder auf.
Hinweis
Die in Tabelle 9 beschriebenen STEP-Tasten
können benutzt werden, wenn das Messgerät
konstanten Strom ausgibt. Die STEP-Tasten
schreiten zum jeweils nächsten 25 %-fachen
Wert.
Tabelle 8. mA-Ausgabe: Tastenfunktionen
Drucktaste Funktion
X
R
COARSE
Erhöhen um 0,1 mA
X
M
FINE
Erhöhen um 0,001 mA
FINE
h
W
Verringern um 0,001 mA
COARSE
r
W
Verringern um 0,1 mA
28


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