Tektronix 494A Water Dispenser User Manual


 
I
o
o
a
o
I
I
o
o
o
o
o
o
o
a
o
a
o
t
I
I
o
o
a
t
o
t
o
I
o
o
o
I
a
o
o
o
I
o
o
o
a
I
o
EXAMpLE:
R2090
on
assembly
A2O
becomss
420R2090.
EXAMpLE:
U1044
on
subassemblv
Al
of
assembly
A36
is
found
in
the
ejectrical
parts
tist
as
A3641U.t044.
Firmware
Version
and
Eror
Message
Readout
This
feature
of
the spectrum
analyzer
provides
readout
that identifies
th€ version
of
firmware
installed.
The
readout
is
momentarily
displayed
when
the
power
is
turned
on.
Ail front-panet
tights
ivitt
temporarily
flash
on
when
the
power
is
first
turned
on.
In
addition,
the
programmable
instrument
will
flash
that information
and
the
GplB
address
and
macro
status
when
RESET
TO
LOCAL
is
pressed.
lf
the spectrum
analyzer
faits
to comptete
any
rou-
tine or
function,
an
error
message
will
flash
on
th€
screen
explaining
the failure.
Accessories
The
Replaceable
Mechanical
parts
list
in
the
Service
Manual,
Volume
2,
contains
the
part
numbers,
descrip-
tions,
and
ordering
information
for
all
standard
and
optional
accessories
offered
for
the spectrum
analyzer
at
this
time.
The
following
list
includes
all
standard
accessories
currently
shipped
with
each
instrurnent.
Refer
to
the
Options
section
of
this
rnanual
for
alternate
information.
.
50
O coaxial
cable;
N
to
N
connector,
72
inch
.
50 O coaxial
cable;
bnc
to
bnc
connector,
1g
inch
.
Adapter;
N
male
to
bnc
female
o
44
fast-blow
fusesl;
2
each
o
Power
cordt
Generaf
Information
-
4g4Ll4g4Ap
Service,
Vol.
1
I
cord
clamp
.
Crt
light
filters;
2
-
one
each
arnber
and
grey
o
Crt
mesh
filter
.
R€ar
Connector
Shield
o
494A1494AP
Operators
Manual
.
494AP
Programrners
Manual;494Ap
Only
Table
1-1 lists
the Tektronix
waveguide
mixers
that
are
available
as optional
accessories.
Tabte
1-l
TEKTRONIX
WAVEGUIDE
MIXERS
Mlxer
Options
The
Options section
of
this
Manual
contains
infor-
mation
on
all of
the options
currently
available
for
the
spectrum
analyzer.
It the
insttument
It
wired
lor
22o'24o
v
ope.ation
(optiona.Al,
A2, 43,
44, A5)
or
it opfion
s2
lr Inrralled
(North
Arnerlc.n
conliguration
lot
zloy
*ilh
rtandsrd
powe.
cord),
2A
medium_blow
turerlr!
used.
18
to
26.5
to
4
33
to 50
490U
40
to
WM
49OV
wM
490E
490W
110
GHz
490F
GHz
wM4
| 10
to 170
GHz
ro
220
GHz
WM
490G
Option
01
1-3