• How to Use R e m o t e Control
6. A P P L I C A T I O N S
The R T - 6 1 option, a remarkable feature of the V T - 1 7 5 ,
provides a remote control c a p a b i l i t y . T o use the option,
remove the case and the rear-panel blind plate, i n s t a l l
the connector supplied w i t h the R T - 6 1 , then plug the
R T - 6 1 into the 16-pin connector on the p r i n t c i r c u i t
board. F o r d e t a i l s , refer to the R T - 6 1 Instruction
M a n u a l .
The basic use of your voltmeter is to measure sinusoidal
w a v e voltages a s an A C voltmeter. In a d d i t i o n , it
provides a wide v a r i e t y of applications a s described
below.
Amplifier G a i n Measurement
V o l t m e t e r is capable of measuring a n a m p l i f i e r g a i n ,
which is a signal m a g n i f i c a t i o n f r o m point A to B in
F i g u r e 4 w i t h a signal generator connected to the a m p l i f i e r
input. If the measured signal levels a t points A and B
are a and b d B , respectively, then the gain is ( b - a ) d B .
Figure 4 - Amplifier Gain Measurement
A l s o the method is applicable f o r measuring a n open
l o o p gain o f each a m p l i f i e r circuit w i t h the negative-
feedback signal leaves applied. F u r t h e r , the method c
be used f o r m e a s i " t h e frequency responses of giv
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