Af Add And Data Bus - Motorola R-20010 Maintenance Manual

Table 15-1. AF ADD and DATA BUS
AFADDBUS
AFBUS
Lin e~
INPUT/ LSX
EN2
3
2
1
0 OUTPUT ASSERTED AFDATA BUS 3 AFDATABUS2 AF DATA BUS 1 AFDATABUS O NOTE
0 0 0 0 0
I 0 DISPLAY 3 DISPLAY 2 DISPLAY 1 DISPLAYO
.
0 0 0
0 I I 1 FUNCTION 3 FUNCTION2 FUNCTION! FUNCTIONO
•
0 ()
0
I
0 I 2 MODE 3 MODE 2
MODEl MODEO
•
() () 0
1 I I
3
ATTEN X 0.001 ATTEN X 0.01 ATTENX0.1 ATTENX I
0 () 1
0
0
I
4
Not Used Not Used EXT INPUT DC SELECT
S ELECT
0
()
1 () I
0
5 RFATTEN 3 RFATTEN2
RF ATTEN I RFATTENO
0 0
1 1
0
0
6 RFOVER WBSIG PRES ANTSEL
SPARE
TEMP
(} () 1 1 I
0
7
IF OVERLOAD S IC PRES
OFFSET ON/ WB/NB
OFF
0 I
0 0 0
0
B CSSGCONTEN CSSG BURST
IMAGEH I/LO MON/GEN
EN
() I (} 0
I 0 9 IOV/DIV RNG IV/DIV RNG
O.IV/DIV RNG O.OlV/DIV RNG
SEL SEL
SEL SEL
0
I 0 1 0
0
10
SPARE BIT SWPSEL2 SWPSEL 1 SWPSELO
0
I
0 I I X
N X X X X
() I
I X X X
N X X X X
I
X
X X X X N X X X
X
*LSO-LS2 are decoded and sent to AlB. Decoding of data shown is done on AlB.
Table 15-2. Decoding for Display, Function, and Modulation LEDs
AF DATA BUS Lines
Display LED Selected Function LED Selected Modulation LED Selected
0 I
2
a
(LSO Strobed Low) (LSl Strobed Low)
(LS2 Strobed Low)
0 (}
0 0
Gen/Mon Mtr FM
PL/DPL
0 (} 0
I Modulation
cw
PLIDPL I NV
0 ()
I 0 Spect Analyzer
AM Tone A
0
0
I
I
Duplex Gen SSB/DSBSC Tone B
0 I
0 0 RFMemory
SWP 1-IOMHz Tone Seq
0 I 0
1
Signaling Seq
SWPO.OI-1 MHz Tone Remote ·
0
I I
0
Freq Counter Not Allowed
Not Allowed
0 I I
I DVM/DIST
Not Allowed Not Allowed
I 0 0 0
Ext Wattmeter
Not Allowed Not Allowed
I () 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
Not Allowed Not Allowed
Not Allowed
I
I
(}
I
Not Allowed
Not Allowed
Not Allowed
I I
I
0 Not Allowed
Not Allowed
Not Allowed
I I
I I
Not Allowed
Not Allowed
Not Allowed
15-2