1. G E N E R A L
2. F E A T U R E S
The Model V T - 1 7 5 is dual-channel electronic voltmeter
sets having t w o independent A C v o l t m e t e r s in a single
cabinet. Two-pointer meter a l l o w s easy dual measurements
and inter-channel comparisons.
M O D E L V T - 1 7 5 is wideband, high sensitive voltmeter for
use anywhere voltage measurements are made, w i t h a
remote control unit. The easy-to-use voltmeter provides
frequency response a s wide a s 5Hz to 1 M H z , measurable
range f r o m 1mV to 300V, and input impedance of
1 0 M O .
a . T w o power source c i r c u i t s , positive and negative,
are provided for very stable D C bias and recover
f r o m any overload in a very short t i m e .
b. Small-sized compact construction is easy to c a r r y
and large-sized two-pointer meter is easy to read.
c. Four-scale dial plate and red and black pointers
a l l o w quick, and accurate voltage reading.
d. Number of adjusting t r i m m e r s are minimized w i t h
a m p l i f i e r s t h a t are precisely calculated in open loop
gains and a r e negative feedbacked through m e t a l -
f i l m resistors a s accurate a s 1%
A m p l i f i e r c h a r a c t e r i s t i c s therefore are f r o m secular
change.
e. Input impedance is a s high a s 10 M O on a l l ranges
and i t s parallel capacitance less than 45 p F
f. Indirect attenuator switching by relay and F E T
(field-effect t r a n s i s t o r ) s w i t c h provides higher
r e l i a b i l i t y , signal-to-noise r a t i o , and inter-channel
c r o s s t a l k than most previous direct method of r o t a r y
s w i t c h .
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