Tektronix 494A Water Dispenser User Manual


 
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Performance
Check
procedurc
-
4g4Ll4g4Ap
Service
Vol.
l
Table
4-8
SENSITIVITY.
tN
dBm
(dBmV
for
75o
tNpUT)
21.
Gheck Residual
Spurious
Response
With
no
input
signat,
-100
dBm
oi
tessl
_a.
Remove
any
signal
connected
to
the
RF
lNpUT,
and
terminate
the RF
tNpUT
in
50O.
Set
the
Spectrum
Analyzer
controls
as
follows:
CENTER
FREQUENCY
50
MHz
SPAN/DIV
10
MHz
RESOLUTION
BANDWIDTH
10
kHz
REF
LEVEL
-50
dBm
b.
Press <Green-SHIFT>
STEP
SIZE to estabtish
a
center
frequency
step
size.
This
will allow
changing
center
frequency
in
50 MHz increments
by use of
the
+STEP
and
-STEP
pushbuttons.
c.
Scan the frequency range
of
bands
"1
,
Z, o(
S
in
100
MHz
increments.
Note
the amplitude
of any
spuri-
ous
response.
Spurious response
amplitudes
must not
exceecl
-1
00 dBm.
(Activating
A F after each
incre-
ment,
makes it easier
to determine
100
MHz
incre-
ments.)
MIN
RF
ATTEN
dB
VERTICAL
DISPLAY
TrME/DtV
0
10
dB/Dtv
AUTO
a
Equivalent
maximum
inPut
noise
(average
nois€
{or
€sch
resolution
bandwidth
with int€rnal
mixer
and
rEKTRoNtx
waveguide
Mixers),
b
Option 07
reptaces
the
100
kHz
filter
with
a 300
kHz filter.
c
TEKTRONIX
Waveguide
Mixers.
Band/Frequency
I MHz
1
MHz
300
kHzb
100
kHz
10
kHz
1 kHz
100
Hz
10
Hz
eanQ
| (cut,
Input)
10 kHz-l.8
GHz
-80
-85
-90
-95
-105
-115
-12s
-134
\rPuon
u/ (/5{r
Input)
5 MHz-l
GHz
-31
-36
-41
NA
-56
-66
-76
-85
E anss
z
6(
U
(5U{1,
Input)
1.7
GHz-7.1
GHz
-74
-79
-u
-89
-99
-109
-119
-125
E
ano
4 (curl
tnput)
5.4-12
GHz
-60
-65
-70
-75
-85
-95
-105
-111
Band
4
(50o
Input)
12-18
GHz
-55
-60
-65
-70
-80
-90
-l
00
-107
uano
]
(5utr
tnput)
15-21
GHz
-55
-60
-oc
-70
-80
-90
-100
-'t07
bano
bs (5o{}
Input)
78-27
GHz
-65
-70
-75
-80
-90
-100
-108
-116
E anos
/
ar
ue
(5uo
Input)
26-60
GHz
Band
9c
(50O
Input)
50-90
GHz
Band
10c
(50o
Input)
7$-140
GHz
-
Band
11c
(50O
Input)
110-220
GHz
Bandl2c (50O
fnput)
170-325
GHz
-60
|
-65
-74
-75
-85
-9s
|
-103
|
-trr
ypically
-95
dBm for
1 kHz
resolution
bandwidth
at
50
GHz, degrading
to
-g5
oam at
g0
iHz
ypically
-90
dBm
for
1 kHz
resolution
bandwidth
at zs
aHz, oegrading
to
-7s
oam ai
40
GHz
ypically
-80
dBm for
1
kHz
resolution
bandwidth
at 110
enr,
o"graoing
to
-65
dBm
at
20
GHz
ypically
-70
dBm for
1
kHz
resolution
bandwidth
at 170
GHz, degrading
to
-55
dBm at
25
GHz
4-27