Beep Adjustment; Front Unit (Ic-F410/F420) - Icom IC-F410 Service Manual

5-4 BEEP ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITION
BEEP AUDIO 1 • Operating frequency: Any
• Connect an audio generator to
pin 25 (MAIN unit; J2) and set
as:
1 kHz / 550 mV
• Squelch
• Volume level : 1
• Receiving
• MAIN unit
SINAD
meter
AC
millivoltmeter
Speaker
4 Ω
1
J4
30 25
+
Audio
–
generator
J4, pin 25
Audio input point
• FRONT unit
R60
Beep level
adjustment
: OPEN
15
16
MEASUREMENT
UNIT LOCATION
Rear Connect an AC mil-
livoltmeter with 4 Ω
panel
load to the [SP]
jack.
DC power supply
13.2 (13.6) V / 15 A
5 - 6
ADJUSTMENT
VALUE
UNIT
62.5 mV FRONT
POINT
ADJUST
R60