Ca T System Computer Control - Yaesu FT-767GX Operating Manual

CAT System Computer C ontrol
4. 1 8
The CAT ( Co m puter-Aided Tuning ) System in the
FT-767GX a l lows con t ro l of V FO/memory data
e n t r y, s e l e c t io n a n d t u ni ng ;
CTC S S tone selection by the operator' s exter ­
n a l p e r so n a l co m p u t e r.
d a t a i s p a s s e d vi a t h e C A T j a c k o n t h e r e a r
p a n e l o f t h e t r a n s ceiv e r, i n t h e fo r m a t b e lo w :
DATA RATE : 4 800 bi t s/ s e c
START B I T :
DATA B I T S :
STOP B I T S :
PAR I TY :
The chart at the bo t to m of this page shows the
e n tire d a t a s e q u e n c e fo r o n e CAT co m m a n d .
D a t a is t r a n s mi t t e d f ro m
for example, Para m e t e r ( Parm ) 4 of the Co m m and
B lock i s s e n t fi r s t .
' S O ' ( S e ri a l O u t p u t ) a r e t h e s e r i a l d a t a b u s
li n e s a t pi n s 3 a n d 2 ,
CAT j ack.
No t e : A l l d a t a b lo c k s s e n t to t h e 767
m u s t b e fi ve b y t e s lo ng.
The I nstruction Code sen t by the external co m ­
puter at the end o f each 5 - byte Co m m and Block
is t h e 'o p co d e ' t h a t i n s t r u c t s t h e F T -767GX
w h a t a c tio n is to b e p e r fo r m ed.
tio n C o d e C h a r t o n t h e n ex t p age d e s c ri b e s
each valid I nst ruction
Data Byte
5 - bvte C o m m and
Block
·
SJ ( Computer -to-76 7 )
( one com m an d cyc l e )
so ( 7 6 7 - to - C o m p u t e r )
( one co mm and cyc l e )
I F s hi f t a n d
Bi - di r e c tio n a l s e ri a l
l
8
2
no ne
l e f t t o rig h t, so,
' S I ' ( S e ri a l I n p u t ) a n d
r e s p e c tiv e l y, o n t h e
The I n s t r u c ­
Code.
CAT SYSTEM
TART
D O D I
B I T
Parrr 1 4
Parm 3
( L S D )
5 - byte C m d
Block
5 - byte E c h o 1--- -- --1
Block
� f.-
5ms
No ti c e t h a t mo s t I ns t r u c tio n s r e q ui r e f ew o r
no arguments in the Parameter Bytes.
every Com m and Block sent to t he 767 must a l ­
w ay s co n si s t o f fiv e b y t e s.
a m e t e r b y t e s wi l l b e i g no r e d w h e n s u c h
s t ru c tio n s a r e
i r r e l e v a n t ( t hey n e e d no t b e z e ro ed ) .
A f t e r t h e co m p u t e r s e n d s t h e fir s t C o m m a n d
Block the 767 should echo the same Block back
to the co m pu t e r ( w i t h i n 5 to 20m s ) , a l l ow i n g
your com puter so ftware to check that the B lock
w a s r e c eived pro p e r l y,
desired ) . I f the echoed b lock does not m atch,
a n e r ro r h a s occu r r e d i n t h e s e r i a l i n t e r f a c e,
and t he Com m and Block must be resent un t i l the
e c ho fro m t h e 767 m a t ch e s
shou l d ti m e o u t a n d p ro c e s s t h e e r ror a f t e r
t h r e e t ri e s ) .
When the echo from the 767 m atches the Co m m and
Block, the com puter nex t sends the 5 - byte A CK
B l o c k, w hi c h is m e r e l y fo u r d u m m y p a r a m e t e r
b y t e s a n d a s p e ci a l
w hi c h i s no t e c ho e d .
between the return o f the echo by the 767 and
sending of the A CK Block by your co m puter.
U pon receiving the A CK B lock, the 767 p roces ­
ses the com m and, and responds on the CAT SO
line ( within 5 to 20m s ) wit h the Status Update
d a t a, which is ei t h e r 5,
lo ng, a c co r di ng
Code ( see the fol lo wing C h arts and Tables ) .
T I M I NG C HART
02 0 3 05
D4
P a rm 2 Parm I
A C K
Blo ck
S ta tus Upda t e
( 5 to 8 6 by t e s )
� f.-
5 m s
- 3 4 -
T h e u n u s e d p a r ­
ex e c u t e d, so t h eir
( i f e r ro r c h e ck i n g i s
( your so f tw a r e
I n s t r u c tio n Code ( O B h ) ,
T h e r e i s no ti m e li mit
8, 26 o r 86 b y t e s
to t h e o rigi n a l I n s t r u c tio n
t
STOP B I T S
D6 D 7
( 2 )
I n s t ruction
C ode ( M S D )
However,
I n ­
v a l u e i s