Software Adjustment - Icom IC-F80DS Service Manual

5-2 SOFT WARE ADJUSTMENT
Select an operation using [↑] / [↓] keys, then set specifi ed value using [←] / [→] keys on the connected computer keyboard
ADJUSTMENT ADJUSTMENT CONDITION
PLL LOCK 1 • Operating CH.
VOLTAGE • Receiving
2 • Operating CH.
• Receiving
3 • Operating CH.
• Connect an RF power meter or 50 Ω
dummy load to the antenna connector.
• Transmitting
REFERENCE • Operating CH.
• Connect an RF power meter or 50 Ω
FREQUENCY
[REF]
dummy load to the antenna connector.
• Transmitting
DSP • Operating CH.
REFERENCE
• Receiving
FREQUENCY*
[Dig REF]
BASE BAND • Operating CH.
CENTER • Receiving
VOLTAGE*
[Dig DA]
*; IC-F80DT/DS only
MAIN UNIT
UNIT
: CH 1 PC Click [Reload (F5)] button, then
screen check the "LVIN" item on the
CS-F70/F1700 ADJ's screen.
: CH 2
: CH 3
: CH 3 Top Loosely couple a frequency
panel counter to the antenna connec-
tor.
: CH 8 DSP Connect a frequency counter
unit to the pin 4 of IC13 on the DSP
unit through a 1000 pF capacitor.
(see the illust below)
: CH 8 PC Set the "Dig DA" item to 70.
screen
DSP UNIT
5 - 4
MEASUREMENT
OPERATION
DSP REFERENCE FREQUENCY
CHECK POINT (
VALUE
0.75–1.45 V
(Verify)
0.55–1.35 V
(Verify)
0.55–1.15 V
(Verify)
470.000000 MHz [L]
520.000000 MHz [H]
±100 Hz
12.288000 MHz
IC-13, pin 4)