Simrad argus - Tuning Adjustment; Magnetron Timer Reset; Digital Potentiometers Reset

Argus Radar - RADAR CONFIGURATION
988-10187-004 3.15
3.8.4 Tuning Adjustment
Pressing the D button of fig. 3.8.1. page 3.12, it is possible to adjust the Tuning. The
range scale is automatically set to 24 NM, the performance monitor activated, the tuning
control set to the middle position. The right placed label with "M.B." written indicates the
Main Bang value and the procedure for the adjustment is described in detail in the
transceiver technical manual.
There are 2 possibilities to adjust the tuning on Argus displays: Automatic or Manual.
Press "Auto Adjust" to run the procedure automatically. The M.B. label content will change
indicating the following possible steps of the adjusting:
• Init Off Decreases the Tune Offset potentiometer down to 0;
• Scan n Increases the potentiometer until it reaches the maximum (99);
• Set Off Decreases again the potentiometer to the optimal Tune Offset found
in the previous step;
• Adjust n Decreases the tune indication potentiometer down to 0 and increases
it until the main bang value (n) reaches 128;
• M.B. n Display the actual main band value.
3.8.5 Magnetron timer reset
When the magnetron is replaced and only when it is replaced, the Service Engineer
should reset the timers of the transceiver so that at the next service it will be possible to
check how many hours the new magnetron has been transmitting, and at which pulse and
PRF, and thereby see if it is really still new or needs to be changed.
The magnetron timers can be reset by pressing the "F" button of fig. 3.8.1, page 3.12, and
accepting the action, pressing "Yes" to the asked question "Are You Sure?".
The Argus system gives a System Warning if the magnetron is close to the expected
lifetime. A "Magnetron EOL" (End Of Life) will be displayed under the TXRX field in the
System Status Display Menu.
Everything described in this paragraph is valid only in case of RTM Control B PCB
on board of the transceiver (TXRX software version 54 or higher). If this is not the
case, when the magnetron is replaced, it is kindly requested to write down the value
of the Main TX timer (which is placed on the Transformer assy of the transceiver) on
a sticker and attach it on the chassis of the transceiver.
3.8.6 Digital potentiometers reset
This button (password protected) should be used when it is necessary to restore the
default presets of the transceiver when the service engineer is no longer able to return it to
a working condition.