Theory
of
Operation
-
494A1494Ap
Sewice,
Vot.
.t
DATA
ENTRY
kHz/-dBX
5
1
6
I
HzldB
MHz/+dBX
ROW
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
a
o
o
o
o
o
o
o
2
4
3
7
X1
X1
X1
x1
X1
X1
X1
xl
x1
X1
,<2
,<2
x2
x2
><2
x2
x2
)<2
x2
x3
x3
x3
x3
x3
x3
X3
x3
X3
x3
x4
x4
X4
x4
x4
x4
X4
x4
x4
x4
X5
X5
x5
X5
X5
x5
x5
X5
x5
X5
Table
7-24
FRONT
PANEL
SWTTCH
MATRTX
CODE/FUNCT|ON
TABLE
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Yl0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
00
01
02
03
04
05
06
07
08
09
OA
OB
0c
OD
OE
OF
10
11
12
13
20
ps
TIME/DIV
50
ps
TIME/DIV
0.1
ms
TIME/D|V
0.2
ms
TIME/DIV
0.5
ms
TtME/D|V
1
ms
TIME/D|V
2
ms
T|ME/D|V
5
ms TIMEID|V
10
ms
TIME/D|V
20
ms
TIMEID|V
50
ms
TIME/DIV
0.1 s
TIME/D|V
0.2 s
TIME/DIV
0.5
s
TIME/DIV
1 s
nME/DtV
2 s
TIME/O|V
5 s TIME/D|V
AUTO
MNL
EXT
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Yl0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Yl0
2F
1C
1D
1E
1F
u
21
18
29
2A
25
26
1B
28
29
28
30
2C
24
20
27
2E
31
EXT
TRIGGER
SINGLE
SWP
SAVE
A
2
dBl
B-SAVE
A
10
dB/
<Green>
SHIFT
MAX
SPAN
-
STEP
FINE
INT
TRIG
FREE
RUN
NARROW
LIN
VIEW
B
WIDE
ZERO
SPAN
AUTO
RES
+
STEP
MrN
NOTSE/DISTORT|ON
HELP
GRAT
ILLUM
MAX
HOLD
PULSE
STRETCHER
MARKER
MENU
VIEW
A
<Blue>
SHTFT
IDENT
TUNE
CF/MKR
75f,}a
RUN/STOP
RESET
(Select
plotter)
(Plotter
B-A
offset entry)
(Disable
corrections)
(Green
shift/
Blue
shift
cancel)
REFLVL
ENTRY
CAL
BASELINE
CLIP
STEP
ENTRY
(Cal
factor
display)
RECALL (display)
(Special
Modes
Menu)
dB/Dtv
SPANiDTV
REF
LEVEL
UNITS
(Blue
shift
help)
READOUT
(Display
errors)
(Diagnostic
menu)
FREQ
START
STOP
STORE DISP
(Blue
shift
cancel)
FREQ
MKR
OFF
ASSIGN
2
SIGNAL
TRACK
(Green
shift
cancel)
STEP
SIZE
MKR
*
REF
LVL
BW
MODE
PEAK
FIND
MKR
1
+2
dBlHz
(Green
shift
hetp)
A MKR
MKR
START
STOP
(Blue
shift/
Green shift
cancel)
e
Option
07
onty.
7-101