Solartron 1260 - Page 124

1
INTRODUCTION
2.1
2.1.1
Connections to
the
item
under
test
are
made from BNC
sockets
on the
instrument
front
panel. The GENERATOR
output
is connected to
the input
of the item
under
test,
and three input channels,
VOLTAGE
1,
VOLTAGE
2,
and CURRENT,
are
available
for measuring the test
response.
Connections
can be made directly
to the front
panel connectors,
using
suitably
terminated
screened
leads.
Or, for
impedance measurements,
connections
can
be
made
via
a
test
module which
fits over
the
connectors.
THE TEST
MODULES
Two types
of
impedance
test module are
available: the
12601 module,
for
testing loose
components, and the
12603
module, for
measuring
components
in-circuit. Both
types
are
available as
options. A
FIXTURE
facility (in the
ANALYZER
menu) allows
the
analyzer Voltage 1
inputs
to be set for
use
with
either
test module,
with
one control
setting (see page
5.9).
12601 COMPONENT
TEST
MODULE
The
12601 component test module
makes it
easy to connect
loose
components
to the
instrument front panel terminals.
Component Clamps
Two
types of
component clamps are
supplied with
the module:
M.
1
T26Q 1
COMPONENT TEST MODULE
LO
HI
One type
of clamp is suitable
for
components
with
axial
leads. To insert
the
component under
test,
simply grasp the leads
firmly
at either
end
and
push them into the
clamps.
Note
that the
component clamps are
labelled
HI
and
LO. These labels
refer
to the Hi
and Lo
connectors
of
the Voltage 1 analyzer
input.
As
shown
in Section
2.1.3,
the
generator
output is
applied
to the HI side of the
item under
test.
When testing
polarized
components,
make
sure
that you insert
them
the right way
round.
(Remember,
the bias can be
set either
positive
or
negative.)
Axial lead
component clamps
can
be inserted
into the
test module
either way
round.
This
allows
connections
to
be made near
to the lead
entry points
on both large
and small
components
and minimizes
errors
due to lead
impedance.
The
other
type of clamp
may
be fitted for
components
with radial
leads.
JWS/1
260/1 6.3