Furuno FR-1500 MARK-3 Series - Manual (Page 17)

-1.3-
1.4 CRT Brilliance
Operate the BRILL control on the control panel of the display unit to adjust the entire screen
brightness. Note that the optimum point of adjustment varies with ambient lighting conditions,
especially between daytime and nighttime.
1.5 Control Panel Backlighting
Operate the [DIMMER] key to adjust control panel backlighting.
1.6 Tuning the Receiver
1.6.1 Automatic tuning
The radar is set for automatic tuning at the factory. The radar receiver is tuned automatically each
time the power is turned on. The tuning indicator and the label AUTO at the top right corner of the
display unit show the tuning circuit is working. The receiver may become detuned, in automatic
tuning, if own ship’s radar receives the radar signal of another shipborne radar. To return, press
the [STBY/TX] key twice.
1.6.2 Manual tuning
Press the GAIN control (Push for HL OFF) and adjust the VRM control after setting as below:
1. Press the [MENU] key.
MENU
1. VIDEO PLOT*/ AIS
2. TGT TRAIL
3. TGT ALARM
4. WATCH TIME
5. ECHO SIG
6. FUNC
7. PLOT
8. MARK
9. BRILL
0. OTHERS
OTHERS
1. HDG SET
2. SPD MODE
MAN LOG
LOG (S-BT)
LOG (S-WT)
3. MAN SPD
4. SET & DRIFT
5. DISPLAY
6. MARK/LINE
7. TUNE
8. NAV DATA
9. EBL/+/PI
0.
↓
TUNE
1.
↑
2. MODE AUTO MAN
* Requires RP-17 or RP-180. AIS not shown on RP-17.
(a) Main menu (b) OTHERS menu (c) TUNE menu
2. Press the [0] key twice to display the OTHERS menu. (b)
3. Press the [7] key to display the TUNE menu. (c)
4. Press the [2] key to select the option MAN from the MODE field.
5. Press the [ENTER/SELECT] key. While observing the picture on the 48-mile scale, slowly
adjust the VRM rotary control while holding down the GAIN control to find the best tuning
point. Make sure that the radar has been set to the best tuning point. This condition is
where the tuning indicator lights to about 80% of its total length. Note that the tuning
indication will never extend to full length.
6. Press the [MENU] key to close the menu.