Direct Voltage Measurements In Relative Reference Mode (Zero Set) - Philips pm2521 Operating Manual

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D I R E C T V O L T A G E M E A S U R E M E N T S I N R E L A T I V E R E F E R E N C E M O D E ( Z E R O S E T )
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M e a s u r e t h e d i r e c t v o l t a g e a s d e s c r i b e d a b o v e .
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D e p r e s s p u s h b u t t o n Z E R O S E T .
R e m a r k :
T h e d i s p l a y w i l l b e h e l d f o r o n e s e c o n d a n d a Z w i l l a p p e a r o n t h e r i g h t - h a n d s i d e o f t h e d i s p l a y . T h e v a l u e
which is on the display during this one second is the relative reference value. After this one second the
display jumps to zero and the indication ZS (ZE RO SET) will appear on the display. The PM 2521 has now
been switched to the relative reference (ZERO SET) mode. In the relative reference mode the PM2521
switches to manual ranging*. Each subsequent reading will indicate the positive or negative deviation from the
relative reference value.
- T o l e a v e t h e r e l a t i v e r e f e r e n c e m o d e , d e p r e s s p u s h b u t t o n Z E R O S E T a g a i n '
R e m a r k :
o v e r l o a d i s i n d i c a t e d w i t h o L o n t h e d i s p l a Y ( l r r p u t s i g n a l ) 2 1 0 0 0 ) '
In range 2000 V overload is also indicated at 2100.0 V-
H o w e v e r , t h e m a x i m u m i n p u t v o l t a g e i s 1 0 0 0 V - ,
1 4 0 0 V p e a k .
T h e m a x i m u m r e a d i n g o n t h e d i s p l a y i s 4 0 0 0 0 .
6.4. 1.2. Alternating voltage measurements (V- rms)
G E N E R A L
T h e P M 2 5 2 1 m e a s u r e s t h e R M S v a l u e o f t h e A C i n p u t s i g n a l . A s t h e A C Í u n c t i o n o f t h e P M 2 5 2 1 i s A C c o u p l e d
a D C c o m p o n e n t i n t h e A C i n p u t s i g n a l i s b l o c k e d . T h e D C c o m p o n e n t i s n o t i n c l u d e d i n t h e m e a s u r i n g r e s u l t .
A L T E R N A T I N G V O L T A G E M E A S U R E M E N T S
S e l e c t f u n c t i o n V - r m s w i t h t h e f u n c t i o n s e l e c t o r .
S e l e c t t h e m a n u a l o r a u t o m a t i c r a n g i n g m o d e w i t h p u s h b u t t o n A U T O i M A N - .
R e m a r k :
M a n u a l r a n g i n g i s i n d i c a t e d w i t h a * o n t h e d i s p l a y . I n a u t o m a t i c r a n g i n g m o d e t h e U P l e v e l i s 2 0 2 0 0 a n d t h e
D O W N l e v e l i s 0 1 8 0 0 .
- S e l e c t i n m a n u a l r a n g i n g m o d e t h e c o r r e c t r a n g e w i t h p u s h b u t t o n U P o r D O W N .
R e m a r k :
Available ranges are: 200.00 mV
2.0000 v
20.000 v
200.00 v
2000.0 v
Overload is indicated with OL on the display (Display > 21000). ln range 2000 V overload is also indicated at
2 1 0 0 0 V . H o w e v e r , t h e m a x i m u m i n p u t v o l t a g e i s 6 0 0 V r m s .
f f the display is ( 0.5 Y" oÍ end of range (100 digits) the display will indicate zero.
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C o n n e c t t h e v o l t a g e s o u r c e t o t h e 0 a n d V t e r m i n a l .