X
o
.1 SINGLE- ENDED
VOLTAGE INPUTS
Single-ended inputs
may be used
where the
signals to be
measured are referred
to a
general ground, such
as the main
chassis
of the
item under test. A typical
application
is shown in Fig 6.1. The
connections
shown will allow the
combined
performance
of
amplifiers A1 and
A2 to be
measured. Alternatively, INPUT
VI
Hi could
be
connected to test point
TP2 to measure
amplifier A2 only,
or
INPUT
V2
Hi could
be
connected to TP2 to measure
amplifier
A1 only.
Fig 6.1
Typical use
of
single -ended
voltage inputs.
The connections made at
the analyzer input for single-ended inputs,
floating or
grounded screen, are shown
in Fig 6.2.
These
connections are
made within the
instrument and are
selected from the INPUT VI and
INPUT
V2
menu pages.
A
floating screen can
accommodate a limited
common mode signal from the item under
test.
Fig 6.2 Single-ended input
configuration, with
a)
floating screen and
b)
grounded
screen.
6.6 JWS/1
260/1