References - JRC JMA-9832-SA Instruction Manual

Marine radar equipment
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3.

REFERENCES

Pre-heat Time after Pattern Selection
After switching over the interswitch patterns, it is necessary to wait for the time as mentioned
below because the pre-heat time is different from the previous interconnection between the MTR
and the display unit. This measure is taken for protecting the electronic tube emitting radar pulses.
(a) Not changed to the new interconnection condition:.............................No preheat time
(b) Changed to the new interconnection condition.
(c) Changed to the new interconnection condition.
Notes on Pattern Selection
Immediately after switching over the patterns, the try to select another pattern may fail. This means
that even If the pattern switchover is completed, it takes some time to prepare for the next
interswitch operation. In this case, "ISW BUSY" will be indicated in the message area on the
display lower right, and the interswitch operation is not available.
Alarm Sound Control
The interswitch alarm continues to sound for about 5 seconds. In setting the alarm sound level,
open the Sub1 Menu, press [2] switch to select the "5.BUZZER" in LEVEL Menu. (Refer to page
3 - 61)
When stopping the alarm sound immediately after it sounds, press [ALARM ACK] switch. Even
when the alarm sound stops, a certain message will remain in the message area.
Notes on Master/Slave Connection
The Master/Slave connection is a configuration in which the Display Unit connected to the Scanner
Unit is the Master Unit, while the Display Unit connected to the Master Unit is a Slave Unit. Of the
interswitch patterns, the following pattern numbers includes the Master/Slave connection:
a) 2-unit System: No.3, No.4, No.5 and No.6
b) 3-unit System: No.4, No.5, No.6, No.7, No.8, No.9, No.10 and No.11
If the Master Display Unit is not in the transmission state, it is impossible to set the Slave Display
Unit to the transmission state. If the Master Display Unit is changed from the transmission to the
standby mode, the Slave Display Unit will also be set to the standby mode forcibly. In this status,
"MTR ST-BY" will be indicated in the message area and the alarm will beep.
However, the MTR was used before change: ..............................................30 seconds
However, the MTR was not used before change: ..........................................3 minutes
A – 19

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