(1)
F r e q u e n c y r e s p o n s e
S T E R E O A M P
W a y s To Better Dual-Channel Voltmeter Operation
The t w o input channels and t w o meter pointers arranged
specifically in V o l t m e t e r are most useful f o r measuring
an electronic equipment having t w o signal sources.
F o r example, V o l t m e t e r is f a r more convenient f o r
measuring stereo left and right channel c h a r a c t e r i s t i c s
than using t w o units units of usual single-channel
voltmeter.
C H 2 S E L E C T O R s w i t c h to pressed (interlock position)
a s most stereo a m p l i f i e r s are not deviated v e r t u a l l y in
the left and right channel levels.
Set the G N D M O D E s w i t c h to " G N D . " If the given stereo
a m p l i f i e r output has no connector common to the left
and right channels, then t u r n the s w i t c h to " O P E N " and
connect the G N D post on the rear panel of voltmeter to
t h a t of the stereo a m p l i f i e r .
- 1 2 -
2
A
/ 2
• Absolute-mean v a l u e = x = 0 . 9 x .
71
2V2
2
• Root-mean-square value = x — - — x =
71
<s/3
4
A
/ 2
— x = 1.04x
7U
\/o
4V2 ^
AV2
• Peak v a l u e = - x
v
/
3 x = x ^ 1.8x .
71 V
3
71
Figure 6 - Stereo Amplitier Frequency
Response Measurement
