7 2 0 0 OPERA TIO N
5 - 2 4
Tab
l
e 5-3 descr
i
bes the
St
e
pt
r
ack
parameters, and Tab
l
es 5-5, 5-7, 5-8, and 5-9
descr
i
be the
Sp
acec
r
a
ft p
a
r
a
m
e
t
e
r
s...
and
O
P
T p
a
r
a
m
e
t
e
r
s...
. Refer to paragraph
5.8.2.3.3 for
i
nformat
i
on on the
Re
s
e
t O
P
T t
a
r
g
e
t
funct
i
on.
TAB
L
E 5-5 S
P
ACEC
R
AFT
P
A
R
AMETE
R
S
P
A
R
AMETE
R
DESC
R
I
P
T
I
ON
Box center
l
ong
i
tude [deg.East]
East
l
ong
i
tude w here the spacecraft
i
s at
i
ts box center.
Long
i
tude range
[deg]
Used for the box
li
m
i
t and orb
i
t scan. Th
i
s sets the
l
ong
i
tude range of
mot
i
on from the box center
l
ong
i
tude. Nom
i
na
l
va
l
ue
i
s 0.1 , w h
i
ch means
the spacecraft
i
s constra
i
ned to box center
l
ong
i
tude – 0.1 .
Est
i
mated
i
nc
li
nat
i
on [deg]
Used to determ
i
ne the box
li
m
i
t a
l
ong w
i
th the
l
ong
i
tude range. A
l
so used
for the orb
i
t scan,
i
f
i
t
i
s enab
l
ed.
Box
li
m
i
t
The A C U’s box
li
m
i
t generates a
l
at
i
tude/
l
ong
i
tude box us
i
ng the box center
l
ong
i
tude,
l
ong
i
tude range, and est
i
mated
i
nc
li
nat
i
on. The box
li
m
i
t shou
l
d
usua
ll
y be EN A BLED, as
i
t prov
i
des OPT w
i
th
i
nformat
i
on about the
spacecraft’s range of mot
i
on, w h
i
ch he
l
ps prevent track
i
ng the wrong
spacecraft. W hen box
li
m
i
t
i
s EN A BLED and a ne w or erased OPT target
i
s
started,
i
t f
i
rst checks to see
i
f the antenna
i
s w
i
th
i
n the box
li
m
i
t. If not,
OPT w
ill
move to the target’s box center
l
ong
i
tude before do
i
ng anyth
i
ng
e
l
se, even
i
f
i
t
i
s see
i
ng a usab
l
e track
i
ng s
i
gna
l
(from the wrong spacecraft)
at the start
i
ng po
i
nt. If box
li
m
i
t
i
s d
i
sab
l
ed, OPT cannot detect that
i
t
i
s on
the wrong target. W h
il
e OPT
i
s track
i
ng,
i
f
i
t ever moves the antenna
outs
i
de of the box, a " Box
li
m
i
t " error occurs, and OPT w
ill
not track unt
il
the error
i
s c
l
eared.
Orb
i
t scan
Used
i
f OPT has no s
i
gna
l
and no orb
i
t mode
l
w
i
th w h
i
ch to w ork. A
c
i
rcu
l
ar geosynchronous orb
i
t
i
s generated pass
i
ng through the box center
l
ong
i
tude w
i
th an
i
nc
li
nat
i
on g
i
ven by the
Est
i
m
a
t
e
d
i
n
c
li
n
a
t
i
on
parameter.
The scan then runs the antenna around th
i
s tra
j
ectory
l
ook
i
ng for a s
i
gna
l
that
i
s at
l
east 0.5 dB above the
L
ow t
r
ack
i
ng s
i
gn
a
l
l
e
v
e
l
. If
i
t f
i
nds such a
s
i
gna
l
, OPT beg
i
ns at that po
i
nt. If one orb
i
t
i
s s w ept w
i
thout f
i
nd
i
ng a
s
i
gna
l
, OPT stops. If d
i
sab
l
ed, OPT stops w
i
thout try
i
ng a scan f
i
rst.
The
Sp
acec
r
a
ft p
a
r
a
m
e
t
e
r
s...
menu conta
i
ns t w o menus:
T
r
ack
i
ng s
i
gn
a
l
p
a
r
a
m
e
t
e
r
s...
(refer to paragraph 5.8.2.3.2) and
C
a
li
b
r
a
t
e
t
r
ack
i
ng s
i
gn
a
l
...
. The
C
a
li
b
r
a
t
e
t
r
ack
i
ng s
i
gn
a
l
...
menu conta
i
ns the parameters
li
sted
i
n Tab
l
e 5-6, and
i
t
a
l
so conta
i
ns the
M
a
nu
a
l
a
nt
e
nn
a
c
ont
r
o
l
funct
i
on descr
i
bed
i
n paragraph 5.8.2.5.
TAB
L
E 5-6 CA
L
I
B
R
ATE T
R
ACK
I
NG S
I
GNA
L
P
A
R
AMETE
R
DESC
R
I
P
T
I
ON
Set 0 dB po
i
nt
Se
l
ect
i
ng th
i
s causes the 0 dB po
i
nt to be set at the current A/D read
i
ng. The
ne w va
l
ue
i
s d
i
sp
l
ayed
i
n
0 dB s
e
tt
i
ng
. To set th
i
s va
l
ue, peak up the antenna on
a
ll
axes and ad
j
ust the
i
ncom
i
ng vo
l
tage bet w een 6 V and 8 V . Th
i
s va
l
ue a
l
so
affects the dB d
i
sp
l
ay on the front pane
l
and the OPT/Steptrack track
i
ng modes.
Set -3 dB
po
i
nt
Se
l
ect
i
ng th
i
s w
ill
set the -3 dB po
i
nt at the current A /D read
i
ng. Th
i
s w
ill
comp
l
ete the ca
li
brat
i
on of the vo
l
ts/dB s
l
ope for the track
i
ng s
i
gna
l
. To set the
-3 dB po
i
nt, f
i
rst set the
0 dB po
i
nt
, then run the antenna off the target by 3 dB
and se
l
ect th
i
s
i
tem. If the antenna cannot be run off of the target, a -3 dB
attenuator may be used at the track
i
ng rece
i
ver
i
nput.
0 dB sett
i
ng
Th
i
s va
l
ue
i
s generated by execut
i
ng the
S
e
t 0 dB po
i
nt
.
A/D s
l
ope
Th
i
s va
l
ue
i
s generated by execut
i
ng the
S
e
t -3 dB po
i
nt
.
Summary of Contents for VertexRSI 7200
Page 15: ...INTRODUCTION 1 4 THIS PA GE INTENTIONALLY LEFT BLANK...
Page 21: ...O VERVIEW 2 6 Figure 2 3 7200 A CU Functional Block Diagram...
Page 41: ...O VERVIEW 2 26 THIS PAGE INTENTIONALLY LEFT BLANK...
Page 46: ...THEORY 3 5...
Page 138: ...7200 OPERA TION 5 70 THIS PA GE INTENTIONALLY LEFT BLANK...
Page 154: ...7200 M AINTENANCE 7 2 THIS PA GE INTENTIONALLY LEFT BLANK...
Page 156: ...7200 DRA WINGS 8 2 THIS PAGE INTENTIONALLY LEFT BLANK...
Page 160: ...A CRONYMS ABBREVIATIONS A 4 THIS PA GE INTENTIONALLY LEFT BLANK...
Page 164: ...7200 PASSW ORD PROTECTION B 4 THIS PA GE INTENTIONALLY LEFT BLANK...
Page 258: ...7200 TROUBLESHOOTING G 12 THIS PA GE INTENTIONALLY LEFT BLANK...
Page 260: ...7200 VENDOR DA T A H 2 THIS PAGE INTENTIONALLY LEFT BLANK...
Page 262: ...7200 MENU TREE I 2 THIS PA GE INTENTIONALLY LEFT BLANK...
Page 264: ...Technical Support J 2 THIS PAGE INTENTIONALLY LEFT BLANK...
Page 266: ...Technical Support J 4 THIS PAGE INTENTIONALLY LEFT BLANK...