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NT-2000 REF Manual
Specifications
9-3
9. Specifications
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3 / 4
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(18) Message
Protection:
Up to 50 messages 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 tag
i
PROTECTED
i
attached to the message ID.
*
Removing the tag requires user confirmation.
(19) Message ID Storage:
・
Capacity:
200 IDs of successfully received messages on each of
518 kHz, 490 kHz and 4209.5 kHz
・
Duration:
60 hours
(20) Stored Message Outputs:
The following messages can be selectively output via
rear panel
RS–422
,
RS–232C
and
I / O DATA
ports:
・
All currently displayed messages or currently
displayed messages of user’s choice
・
All stored messages
・
Stored messages of user’s choice by specifying
frequency, transmitter or message type
(21) External I/O Interfaces:
・
Printer Interface:
RS–232C
port (
M A X 3 2 3 2
transceiver)
・
IBS/INS:
RS–422
port (
M A X 3 4 9 0
transceiver) with input
lines optically isolated
・
NMEA–0183/IEC 61162–1: 8–pin connector (
I / O DATA
port)
・
Alarm Activation Output: 2 isolated pairs of relay contacts (
ALARM
port)
(22) Message Alarm Specifications:
・
Audible Indication:
Beeping from front–facing piezoelectric buzzer
- 1–second intervals: Type D messages
- 3–second intervals: Types, A, B and L messages
・
Visual Indication:
Red tag i
ALARM !
i attached to ID
ID and message text displayed in red color for type D
messages (SAR).
・
Acknowledgement/Muting: Manually with front panel button or by means of
IEC61162–format command (IEC 61162–1 compliant
$
--ACK command) via
RS–422
input port.
・
Alarm Conditions Output: IEC 61162–1 compliant
$
CRALR sentences
containing local alarm numbers and alarm text via
RS–422
output port. See paragraph 7.4.3 for details.
NOTE: See section 10 (List of Alarms) for additional information on alarms.
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