Seiwa SWRx series - Manual (Page 16)

18 User Manual
HDG 000 T O
RNG
1 Nm
Rings
4 Nm
Motion Heading
Relative Head Up
Gain STC/FTC
55 59/Off
Exp Int. Rej.
Off Off
G.Z Trails
Off Off
SOG 1.0 Kts
COG 000 T O
DST 9.468
BRG 000 T
nm
O
SENSITIVITY
GAIN 055
STC 059
FTC Off
INTERF. REJECTION Off
Fig. 1.7.4.4g - Transmission Trigger Delay tuning (VIII)
Once the calibration has been performed, the calibration data is retained. How-
ever if a Clear RAM operation is performed it may be necessary to repeat the
calibration.
1.7.4.5 Automatic and Manual Tune
N
OT
N
ECESSARY
A
T
F
IRST
I
NSTALLATION
The Tune control is used to tune the receiver in the Radar antenna for maximum
target returns on the display. The Radar comes from the factory already tuned so
this operation is not necessary at first installation. In general Radar Tuning may
be necessary if any component of the Radar is replaced for maintenance.
The Radar receiver can be tuned in Automatic or Manual mode. In Automatic Tune
mode, the Radar tunes itself automatically on all range scales. It is recom-
mended to execute the Tune function in Automatic mode. This generally
ensures that the Radar receiver is always tuned to receive the maximum signal.
If you choose the Manual Tune, you will need to adjust it again after 10 minutes,
after you have turned on the Radar, since the required setting will change after
the magnetron has warmed.
NOTE The Manual Tune function should be made only by professional operators.
Manual Tune
To execute manual tuning follow the procedure:
[MENU] + "Tuning" + [ENTER] + "Manual Tune" + [ENTER]
♦
The following Warning message is displayed:
HDG 007 T O
RNG
4 Nm
Rings
24 Nm
Motion Heading
Relative Head Up
Gain STC/FTC
82 67/Off
Exp Int. Rej.
Off Off
G.Z Trails
Off Off
SOG 1.0 Kts
COG 007 T O
DST 0.518
BRG 072 T
nm
O
43 33.715N
010 17.199E
O
O
Fig. 1.7.4.5 - Manual Tune Warning message
♦
Press [ENTER] to proceed, the Manual Tuning page is displayed: