Icom IC-F2721 Service Manual page 22

SOFTWARE ADJUSTMENT (continued)
• Select an operation using [↑] / [↓] keys, then set specifi ed value using [←] / [→] keys on the connected computer keyboard.
ADJUSTMENT ADJUSTMENT CONDITION
NOTE:
Adjust all the adjustment items as follows throughly in sequence.
RX 1 • Operating CH
SENSITIVITY
• Connect the SSG to the antenna connec-
[BPF T1]
tor and set as:
[BPF T2]
Frequency
Level
Modulation
Deviation
• Receiving
CONVENIENT:
The BPF T1, BPF T2 can be adjustment automatically.
q-1: Set the cursor to "BPF ALL" and then push [ENTER] key.
q-2: The connected PC tunes BPF T1, T2 to peak levels.
w-1: Set the cursor to one of BPF T1, T2 as desired.
w-2: Push [ENTER] key to start tuning.
w-3: Repeat w-1 and w-2 to perform additional BPF tuning.
Digital RSSI 1 • Operating CH
[Dig RSSI] • Connect the SSG to the antenna connec-
(IC-F2721D/ tor and set as:
F2821D only) Frequency
Level
Modulation
• Receiving
S-METER 1 • Operating CH
[RSSI] • Connect the SSG to the antenna connec-
tor and set as:
Frequency
Level
Modulation
• Receiving
2
• Set the SSG as:
Level
• Receiving
SQUELCH 1 • Operating CH.
LEVEL
• Connect the SSG to the antenna connec-
[SQL]
tor and set as:
Frequency
Level
Modulation
• Receiving
*The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
UNIT
: CH 8 [L] PC
screen
CH 1 [H]
: 435.000 MHz [L]
450.000 MHz [H]
: 10 µV* (–87 dBm)
: 1 kHz
: ±3.5 kHz
or
: CH 3 Push the [ENTER] key on the connected computer's keyboard
to set "Dig RSSI" level.
: 400.000 MHz [L]
450.000 MHz [H]
: 0.16 µV* (–123 dBm)
: OFF
: CH 1 Push the [ENTER] key on the connected computer's keyboard
to set "S3" level.
: 400.000 MHz [L]
450.000 MHz [H]
: 14 µV* (–84 dBm)
: OFF
Push the [ENTER] key on the connected computer's keyboard
: 0.45 µV* (–114 dBm) to set "S1" level.
: CH 11 [L] Rear
CH 2 [H] panel
: 435.000 MHz
450.000 MHz
: 0.18 µV* (–122 dBm)
: OFF
5 - 8
MEASUREMENT
LOCATION
Connect the SINAD meter with
a 4 Ω load to the [EXT SP] jack.
Connect speaker to the [EXT
SP] jack.
VALUE
Minimum distortion
level
Set SQL level to
close squelch.
Then set SQL level
at the point where
the audio signals
just appears.