REFERENCE =
A l t e r n a t e ( A L T ) and Chop (CHOP) Modes
When u s i n g t h e s e modes d u r i n g m u l t i - t r a c e o p e r a t i o n , t h e d i s p l a y I s d i v i d e d up
a c c o r d i n g to time.
I n the chop mode, each channel i s s u b d i v i d e d a c c o r d i n g to time w i t h i n each sweep.
N o r m a l l y , t h i s k i n d of measurement i s c a r r i e d out w i t h s i g n a l s of e i t h e r s l o w e r
sweep r a t e from 1 ms/div or low r e p e t i t i o n r a t e s where f l i c k e r i s q u i t e n o t i c e a b l e ,
I n t h e a l t e r n a t e mode, each c h a n n e l i s d i s p l a y e d one a f t e r a n o t h e r . T h e r e f o r e ,
each channel d i s p l a y appears much c l e a r e r . Normally, a f a s t e r sweep i s employed.
© VOLTS/DIV control
The v e r t i c a l a x i s s e n s i t i v i t y i s c o n t r o l l e d w i t h t h e CHI v e r t i c a l a x i s a t t e n u a t o r .
The V O L T S / D I V c o n t r o l s w i t c h e s i t i n 1-2-5 s t e p s . C a l i b r a t e d v e r t i c a l a x i s
s e n s i t i v i t y i s obtained by s e t t i n g V. VARI to the CAL p o s i t i o n .
I n X-Y o p e r a t i o n , the VOLTS/DIV c o n t r o l s e r v e s as a Y - a x i s a t t e n u a t o r .
Figure 1-2
13