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This 
product 
provides 
the 
AIS
Radar 
series.
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Introduction
information 
display 
function, which is 
available 
on the 
JMA-9900
ORead 
this operation manual 
carefully before use.
OThis 
manual 
describes 
operations 
of the AIS display function only.
Please refer 
to 
JMA-9900 series operation manual for operation of other 
radar 
functions.
Please keep 
this operation manual for 
reference.
OThere 
are lvvo 
types 
of 
AIS 
interfaces 
for JMA-9900 Series Radar as follows.
' 
NQA4172 : Base Kil 
(Common 
unit for 
both 
types 
of 
JMA-9900 
radar.)
Note
This 
AIS 
kit was 
checked 
the 
operation only 
by 
the connection with JRC 
AIS 
(JHS-182) 
.
JMA-9900 
TYPE
AIS l/F 
Type
Self-standing 
type
NQA-4172., 
7ZCRD0967
Desktop 
type
NQA-4172", 
NQA4172-6
The 
capacitv and 
limitations of the svstem 
and 
operational limitations
1. 
Vectors 
of ARPA target 
are displayed by dashed 
lines 
instead 
of solid 
lines 
to keep
consistency 
with those 
of 
AIS targets.
2. 
Maximum 
50 
AIS targets 
are displayed 
in 
this system. 
Three kinds 
of 
AIS target 
filter 
are
provide 
to 
prioritize 
on 
displaying AIS targets effectively. See 1 
-10 
in this 
manual.
3. 
Note 
that 
following 
operational restrictions in 
this 
system 
before 
using.
1) An 
AIS function 
cannot turn ON
. 
When 
"MANUAL" was 
selected as a speed 
input 
source.
. 
When 
SET 
and 
DRIFT was set in 
"LOG" 
speed 
mode
2) 
"LOG" 
speed 
mode 
cannot 
be 
chosen as 
a speed 
source.
. 
When 
an 
AIS 
function 
was 
ON and SET and 
DRIFT 
were 
set.
3) "MANUAL" speed 
mode cannot be selected.
. 
When 
an AIS 
function 
was ON.
4l SET/DRIFT 
(Current 
correction) function 
cannot 
turn 
ON.
. 
When 
an 
AIS 
function 
was 
ON and speed 
was 
set as 
"LOG".
A-23