Table of Contents
Advertisement
18.3 DECODING FOR
DISPLAY,
FUNCTION AND
MODULATION LEOs
Table
18-2
shows which
LED
is
selected for each
state
of
the
AF
DATA BUS
when the
appropriate
latch-select
(LSO,
LSl,
or
LS2)
is strobed
low.
Table
18-2. Decoding
for
Display, Function,
and
Modulation
LEDs
C'unlll(uration
of
AF DATA
BUSSES
Display
LED
Selected
Function LED Selected
Modulation
LED
Selected
I)
I
2
:l
(LSO
strobed
low)
(LSI strohed low)
(LS2
strobed
low)
I)
()
0
0
Gen/Mon Mtr
FM
PL/D
PL
0
()
0
I
Modulation
cw
PL/OPLINV
I)
()
I
0
Spect Analyzer
AM
Tone
A
I)
()
I
I
Duplex Gen
SSB/
DSBSC
ToneB
0
I
0
0
RF Memory
SWP
1-
IOMHz
Tone
Seq.
II
I
(l
I
Signaling
Seq
SWPO.OI·
I
MHz
Tone
Remote
II
I
I
0
Freq
Counter
Not Allowed
Nut
Allowed
0
I
I
I
DVM/DIST
Not Allowed
Not
Allowed
I
()
0
0
Ext Wattmeter
Nut Allowed
Not
Allowed
I
0
0
I
IF
Not Allowed
Not
Allowed
I
0
I
0
Scope
AC
Not Allowed
Not
Allowed
I
0
I
I
Scope DC
Not Allowed
Not
Allowed
I
I
0
0
Not Allowed
Not Allowed
Not Allowed
I
I
0
I
Not Allowed
Not Allowed
Not
Allowed
I
I
I
0
Not Allowed
Not Allowed
Not
Allowed
I
I
I
1
Not Allowed
Not Allowed
Not Allowed
18-4
Advertisement
Table of Contents
Troubleshooting
