Agilent Technologies 8504B - Page 210

FINAL TRIM SIZE : 7.5 in x 9.0 in
Reference
Keys,
Softkeys,
and
Connectors
EXT
TRIGGER
connector
This
rear-panel connection
is used
to
connect
an
external
negative-going
TTL-compatible
signal to
trigger a
measurement
sweep
.
The
trigger
can
be
set
to
external using
the
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
EXT
TRIG
on OFF
softkey.
EXTERNAL
Turns
o the
internal sources
so that
an external
source
can
be
used.
This
feature is
provided as
a convenience
for users
with
very
advanced
applications
. Note
that normal
calibration and
correction features
are
not
available
with an
external source
.
Use
the
entry
keys
to
enter
the
wavelength
of
the external
source.
Connect
the external
source to
the
rear-panel
SOURCE
ARM
INPUT
connector
.
This
connector
is
located
behind
a
cover plate
on
the
lightwave
section's
rear
panel.
The
cover
plate
is
located
just left
of
the
I.O.
INTERCONNECT
cable
.
The
green
ber-optic
cable
supplies
the
internal sources
and should
normally
remain
connected
to
this
connector
.
Refer to
\Block Diagram
"in
this chapter
.
K
ey
P
ath:
4
MENU
5
,
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
EXTERNAL
FIXED
MKR
MENU
A
ctivates
the
xed-marker
menu,
where
the
time
,
distance
,
and
amplitude
values
for
a
xed
reference
marker
can
be
set.
The
marker
can
be
positioned
anywhere
on
the
display
,
and
need
not
be
on
the
trace
.
It
can
be
set to
the
current
active
marker
position,
using
the
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
MARKER
!
FIXED
MARKER
softkey
.
Other
markers
can
then be
activated and
their
values
referenced
to
the
xed
marker
.
When
this is
done,
the
marker
readings
in
the
top
right
corner
of
the
graticule
are
the distance
(or time)
and
amplitude
values
of
the
active
marker
minus
the
xed
marker.
Also displayed
in
the
top
right
corner
is
the notation
1
REF=FIXED
.
K
ey P
ath: 4
MKR
5
,
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
1
MENU ,
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
FIXED
MKR MENU
FIXED
MKR
POSITION
Allows
you to
set
a
marker
at
any
horizontal
position
(distance
or
time).
Separate
values are
not maintained
for logarithmic
magnitude
format
and
linear
magnitude
format.
K
ey Path: 4
MKR
5
,
NNNNNNNN
NNNNNNNNNNNN
1
MENU ,
NNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNN
FIXED
MKR MENU ,
NNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNN
FIXED
MKR POSITION
5-23
All manuals and user guides at all-guides.com