Trio CS-2100A, Инструкция по эксплуатации

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APPLICATION
A d j u s t V O L T S / D I V and V A R I A B L E so t h a t the signal
coincides w i t h t h e CRT face's g r a d u a t i o n lines. After
adjusting, be sure not to disturb the setting of t h e
V A R I A B L E c o n t r o l .
2. The vertical calibration coefficient is n o w the reference
signal's a m p l i t u d e (in volts) divided by the product of
the vertical a m p l i t u d e set in step 1 and the V O L T S / D I V
setting.
Using t h e f o r m u l a :
Vertical coefficient
Voltage of the reference signal (V)
Vertical a m p l i t u d e (div) x V O L T S / D I V setting
3. R e m o v e the reference signal and apply the u n k n o w n
signal t o the INPUT, using the V O L T S / D I V c o n t r a l t o
adjust t h e display for easy observation. Measure the
a m p l i t u d e of the displayed w a v e f o r m and use the f o l -
l o w i n g relationship to calculate the actual a m p l i t u d e of
t h e u n k n o w n w a v e f o r m .
A m p l i t u d e of t h e u n k n o w n signal (V)
= Vertical distance (div) x Vertical coefficient
x V O L T S / D I V setting
[ E X A M P L E ]
For the e x a m p l e t h e V O L T S / D I V is 1V.
The reference signal is 2 V r m s . Using the V A R I A B L E , adjust
so that the a m p l i t u d e of the reference signal is 4 divisions.
Substituting the given value:
Vertical coefficient =
A
, ^
V R M S =
Q .5
4 (div) x 1 (V)
Then, measure the u n k n o w n signal and V O L T S / D I V is 2 V
and vertical a m p l i t u d e is 3 divisions.
Substituting the given value:
Effective value of u n k n o w n signal = 3 (div) x 0.5 x 5(V)
= 7.5 V rms
• PERIOD
Setting the relative s w e e p coefficient w i t h respect to a
reference frequency signal.
1. A p p l y t h e reference signal to the INPUT, using
V O L T S / D I V a n d V A R I A B L E t o o b t a i n an e a s i l y
observed w a v e f o r m display.
Using S W E E P T I M E / D I V and V A R I A B L E adjust one
cycle of t h e reference signal t o o c c u p y a fixed n u m b e r of
scale divisions accurately. After this is done be sure not
to disturb the setting of the A V A R control.
2. The S w e e p (horizontal) calibration coefficient is then
the period of t h e reference signal divided by the p r o d u c t
of the n u m b e r of divisions used in step 1 for setup of the
reference and the setting of the S W E E P T I M E / D I V
control.
Using the f o r m u l a :
S w e e p coefficient
Period of the reference signal (sec)
~~ Horizontal w i d t h (div) x S W E E P T I M E / D I V setting
3. Remove the reference signal and input the u n k n o w n
signal, adjusting the S W E E P T I M E / D I V control for easy
observation.
M e a s u r e the w i d t h of one cycle in divisions and use the
f o l l o w i n g relationship t o calculate t h e actual period.
Using t h e f o r m u l a :
Period of u n k n o w n signal - W i d t h of 1 cycle (div)
X s w e e p
coefficient x S W E E P T I M E / D I V setting
5-7
Unknown Signal
Refence signal
Adjusted reference signal
Reference signal
Adjusted reference signal