Icom IC-U82 Service Manual page 15

ADJUSTMENT
DTCS WAVE
FORM
(other than USA)
(USA version)
DIGITAL
REFERENCE
FREQUENCY
DEVIATION
(other than USA)
(USA version)
SENSITIVITY
SQUELCH
(other than USA)
(USA version)
S-METER
(other than USA)
(USA version)
QUITING ADJUSTMENT MODE
*; This output level of the standard signal generator (SSG) is indicated as SSG's terminated circuit.
ADJUSTMENT CONDITION
• Mode : Wide
Connect an oscilloscope and
•
the FM deviation meter to the
antenna connector.
• Set the FM deviation meter as;
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector : (P–P)/2
No audio input
•
Transmitting
1 • Set the FM deviation meter as;
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector : (P–P)/2
• No audio input
Transmitting
•
1 • Connect an SSG to the antenna
connector and set as;
Frequency : 400.020 MHz
Level : 0 dBµ*
Modulation : 1 kHz
Deviation : ± 3.5 kHz
• Receiving
2 • Set the SSG as;
Frequency : 449.980 MHz
Level : 0 dBµ*
Modulation : 1 kHz
Deviation : ± 3.5 kHz
• Receiving
3 • Set the SSG as;
Frequency : 478.980 MHz
Level : 0 dBµ*
Modulation : 1 kHz
Deviation : ± 3.5 kHz
• Receiving
1 • Set the SSG as;
Frequency : 435.020 MHz
: 445.020 MHz
(USA version)
Level : −19 dBµ*
Modulation : 1 kHz
Deviation : ± 3.5 kHz
• Receiving
1 • Set the SSG as;
Frequency : 435.020 MHz
: 445.020 MHz
(USA version)
Level : −6 dBµ*
Modulation : 1 kHz
Deviation : ± 3.5 kHz
• Receiving
1 • Turn power OFF.
2 • Disconnect the JIG from [SP] jack.
3 • While pushing [MONI] and [D•CLR] keys, turn power ON.
5 - 3
OPERATION
• Rotate [VOL] to set to square wave form as
shown below.
• Push [D•CLR] key.
• Rotate [VOL] to set to ±1.20 kHz deviation.
• Push [D•CLR] key.
• Push [D•CLR] key.
• Push [D•CLR] key.
• Push [D•CLR] key.
• Close the squelch once, then set the squelch
level at the point where the audio signals
just appears.
• Push [D•CLR] key.