Phase Difference Measurements 2 - Kenwood CS-5170 Instruction Manual

Phase difference = Horizontal distance of new s w e e p range
( d i v ) x 4 5 ° / d i v
New S W E E P T I M E / D I V setting
x
Original S W E E P T I M E / D I V setting
Another simple method of obtaining more accuracy quick-
ly is to simply use x 10 M A G for a scale of 4 . 5 ° / d i v .
Phase difference
One cycle adjusted to occupy 8 div.
Fig. 34
Phase difference
Expanded s w e e p w a v e f o r m display.
Fig. 3 5
(2) Cursor m e a s u r e m e n t (only C S - 5 1 7 0 )
1. In ordinary procedures 1 and 2 , adjust w a v e f o r m s to be
measured to an easy-to-observe position.
2. Adjust 1 c y c l e ' s waveform to 5 divisions with the S W E E P
T I M E / D I V . V A R I A B L E controller. Then move t w o w a v e -
forms to the center of the scale with the • POSITION
s w i t c h e s .
3 . Set the cursor mode to 1 /AT.
NOTE: W h e n the S W E E P T I M E V A R I A B L E s w i t c h is set
to U N C A L , the unit is set to P H A S E measurement
mode.
4 . Bring the A R E F cursor to the intersection of the
phaseleading signal and center line of the horizontal scale,
and bring the A cursor to the intersection of the phase-
lagging signal and center line of the horizontal scale.
2 8
5. Measured value is displayed in the upper right part on
the s c r e e n .
5 —
REF cursor
1 0 . T I M E R A T I O
C U R S O R S
Duty ratio of square w a v e s can be measured as follows:
1. Supply signal into the INPUT terminal. Set the V . MODE
s w i t c h to the channel to be used, the A C - G N D - D C selec-
tor switch to D C , and each switch so that ordinary sweep
is displayed. Then adjust the V O L T S / D I V and S W E E P
T I M E / D I V for easy waveform observation.
2. Turn the S W E E P T I M E V A R I A B L E s w i t c h on to adjust 1
c y c l e ' s w a v e f o r m to 5 divisions on the screen with the
M • POSITION s w i t c h e s as necessity requires.
NOTE: W h e n the S W E E P T I M E V A R I A B L E s w i t c h is set
to U N C A L , the unit is set to RATIO measurement
mode.
3 . Set the cursor mode to AT.
4 . Adjust the A R E F cursor to the left of the t w o points to
be measured, and the A cursor to the right.
5. Duty ratio with respect to the 5 div ( 1 0 0 % ) point is dis-
played percentagewise in the upper right part on the
screen.
R E F cursor
Measured value
cursor
3 6
Fig.
M E A S U R E M E N T U S I N G
Measured value
i cursor
Fig. 37