5 - 8
*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.
5-4 RECEIVER ADJUSTMENTS
Receiver total gain adjustment must perform after transmitter total gain adjustment.
RECEIVER
TOTAL GAIN
NOISE
BLANKER
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1
2
1
2
• R2701 (MAIN unit): Center
• Turn R1614 (MAIN unit) to 90
˚
counter clockwise from center posi-
tion.
• Display frequency: 14.10000 MHz
• Mode
: USB
• [RIT]
: OFF (Center)
• [NB]
: OFF
• [P.AMP]
: ON
• [ATT]
: OFF
• Connect an SSG to [ANT] connec-
tor and set as:
Frequency : 14.10150 MHz
Level
: 1.0 µV* (–107 dBm)
Modulation : OFF
• Receiving
• [P.AMP]
: OFF
• [ATT]
: OFF
• Set an SSG as:
Level
: 1.0 mV* (–47 dBm)
and OFF
• Receiving
• Display frequency: 14.10000 MHz
• Mode
: USB
• [P.AMP]
: ON
• [NB]
: OFF
• Connect an SSG to [ANT] connec-
tor and set as:
Frequency : 14.10150 MHz
Level
: 3.2 µV* (–97 dBm)
Modulation : OFF
and apply following signal to [ANT]
connector.
• Receiving
• [NB]
: ON
• Receiving
Rear
panel
MAIN
Connect an AC milli-
volt meter to [EXT
SP] connector with
an 8
Ω
load.
Connect an oscillo-
scope to check point
CP1501.
Maximum audio output
level
30 dB of AF level differ-
ence
Maximum noise wave-
form
The noise must be
blanked
MAIN
MAIN
MAIN
L1103,
L1201,
L1202,
L1621,
R1614
L1501,
L1502
Verify
100 msec.
1 msec.
Summary of Contents for IC-718
Page 1: ...HF TRANCEIVER iC 718 iC 718 ...
Page 54: ...Count on us iC 718 ...
