AE–1800 Instruction Manual
Specifications
9. Specifications
(
continued
–
2 / 4
)
(14) Text Display:
･
NAVTEX Messages:
40 characters per line, 18 lines per screen. A forced
carriage return symbol
*
2
(
) divides the last word at
40th character position if the number of character in a
line exceeds 40.
Maximum capacity of characters/line: 4096
*
2
Hex 5F ( _ ) is output to RS–232C or RS–422 port.
･
Statuses & Prompts:
1 line
(
40 characters maximum
) at screen’s upper and
lower edges
(15) Indication of Message Reception and Storage
･
Message Reception:
Tag
i
NEW MESSAGE
i
is attached to message ID.
･
Storage:
Indication “
STORED
”
is turned on at the end of each
satisfactorily received message together with a
character error rate (
CER
= XX%) readout
(16) Message Scrolling:
･
Live Messages:
Automatic, except for new SAR messages
･
Stored Messages:
Manual, line–by–line or page–by–page scrolling
(17) Message Storage:
･
Capacity:
200 messages (
average
500
characters per message)
for
each of 518 kHz, 490 kHz and 4209.5 kHz receivers. Up
to an additional 50 messages can be stored (for 518
kHz and 490 kHz or 4209.5 kHz) if stored messages are
protected.
Maximum storage of characters: 106,496 /
frequency
Maximum characters/message: More than 8000
If the equipment receives a message with a character
error rate (
CER
) of > 4% and
≦
33%, it will store the
message but will receive the same message to be
transmitted subsequently. If the subsequent message
has a lower CER, it will automatically replace the
previously stored one. If a message is received with a
CER > 33%, it will not be stored.
･
Duration:
60 hours 20 minutes from successful reception of each
message, or until the storage limit is reached, after
which old messages will be automatically erased from
memory on a first–in–first–out basis except for
user–protected messages that cannot be erased from
memory until their protection tags are removed
manually. Time source is derived from the CPU clock
(
24.00 MHz
) to compute message aging.
・
Storage without Power:
Protected messages are stored for at least 10 days after
power is removed continuously.
(18) Message Protection:
Up to 50 messages on each receiver screen can be
protected against automatic erasure, and are saved in a
separate area of the non–volatile message memory.
Protection of a user–selected message can be cancelled
to allow automatic erasure after a 60–hour time
passage
.
Protected messages are indicated with
*
3
tag
i
PROTECTED
i
attached to the message ID.
*
3
Removing the tag requires user confirmation.
(
continued on next page
)
