5 - 4
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
MEASUREMENT
VALUE
UNIT
OPERATION
PLL LOCK
VOLTAGE
[RX LVA1]
1 • Operating CH.
• Preset [LV (RX1)]
• Receiving
: CH 2
: 169 [3.30 V]
PC
screen
Click [Reload (F5)] button, then
check the "LVIN" item on the
CS-F70/F1700 ADJ's screen.
3.3 V
[RX LVA2]
2 • Operating CH.
• Preset [LV (RX2)]
• Receiving
: CH 1
: 179 [3.50 V]
3.5 V
[TX LVA]
3 • Operating CH.
• Preset [LV (TX)]
• Transmitting
: CH 2
: 179 [3.50 V]
3.5 V
CONVENIENT:
The PLL lock voltage can be adjusted automatically.
Put the cursor on each items "RX LVA1"/"RX LVA2"/"TX LVA" and then push [ENTER] key of the connected
PC's keyboard.
PLL LOCK
VOLTAGE
1 • Operating CH.
• Receiving
: CH 2
PC
screen
Click [Reload (F5)] button, then
check the "LVIN" item on the
CS-F70/F1700 ADJ's screen.
3.2–3.4 V
(Verify)
2 • Operating CH.
• Receiving
: CH 1
3.4–3.6 V
(Verify)
3 • Operating CH.
• Transmitting
: CH 2
3.4–3.6 V
(Verify)
REFERENCE
FREQUENCY
[REF]
• Operating CH.
: CH 2
Top
panel
Loosely couple a frequency
counter to the antenna connec-
tor.
174.000000 MHz
±100 Hz
• Connect an RF power meter or 50
Ω
dummy load to the antenna connector.
• Transmitting
DSP
REFERENCE
FREQUENCY*
[Dig REF]
• Operating CH.
: CH 9
DSP
unit
Connect a frequency counter
to the pin 4 of IC13 on the DSP
unit through a 1000 pF capacitor.
(see the illust below)
12.288000 MHz
• Receiving
BASE BAND
CENTER
VOLTAGE*
[Dig DA]
• Operating CH.
• Receiving
: CH 9
PC
screen
Set the "Dig DA" item to 70.
*; IC-F70DT/DS only
DSP REFERENCE FREQUENCY
CHECK POINT (
IC-13, pin 4)
DSP UNIT
MAIN UNIT
Summary of Contents for IC-F70DS
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Page 42: ...S 14124HZ C1 2005 Icom Inc ...
