Agilent Technologies 4395A - Page 143

Rear
P
anel
Features
and Connectors
11.
T
est
Set I/O
Interface
Y
ou
can
use
this interface
to establish
a connection
between the
4395A and
the test
set using
the
cable
included
in
the S-parameter
test set
package to
control the
test set
from the
4395A.
See Chapter
12 for
the test
set that
can be
connected. This
interface is
not
used
for
the
87512A/B
transmission/reection
test
set.
Caution
Do
not
connect
a
printer
to
this
interface
.
Doing
so
could
damage
the
printer.
12.
Gate
Output
(Option
1D6
Only)
Outputs
a
signal
that
indicates
the
status
of
the
gate
when
the
4395A
is
performing
gate
trigger
in
EDGE
mode
.
The
signal
is
TTL-compatible;
high
indicates
gate
on
,
low
indicates
gate
off .
13.
External
Trigger
Input
Triggers
a measurement
sweep.
The
positive
(or
negative)
edge
of
a
signal
in
the
lo
w
(or
high
state)
starts a
measurement. The
signal is
TTL-compatible
.
T
o
use
this
connector
,
set
the
trigger
mode
to external
using softkey
functions.
14. Reference
Oven Output
(Option
1D5
Only)
Connects
to
the EXT
REF
INPUT
connector
when
Option
1D5
is
installed.
Option
1D5
improves
the
frequency
accuracy
and stability
of
the
4395A
.
Front and Rear Panels 4-13