Icom IC-R7100 - 6-2 PLL ADJUSTMENT; 6-3 LOCAL OSCILLATOR ADJUSTMENT

6·2 PLL ADJUSTMENT
MEASUREMENT
ADJUSTMENT
POINT
ADJUSTMENT
ADJUSTMENT CONDITIONS VALUE
UNIT LOCATION UNIT ADJUST
2nd
LO 1 • Dtsptayed frequency: 512.000 MHz
PLL Co nneet a spectr um Maximum value P LL
L36. L37
OUTPUT
analyzer or RF (More Ihan - adBm)
L3B. L39
LEVE L
vo lt meter to J5.
L47
2
• DtspIayed trequency: 511 .9999 MHz
Max imum value
L42 , l44
(More Ihan - 3dBm)
Nore : Walt a lew rninutes after power ON 10 pe rform eaeh adju stmenl.
2 nd LO 1 • Displayed trequency: 511.9999 MHz PLL Conneet a frequency 768.0000 MHz PL L
C69
OUTP UT
cou nter 10 JS.
FREOUE N CY
2 • Displayed frequency: 512.0000 MHz 256.0000 MHz Verity
±100 Hz
IF 1
• Displayed lrequency: 512. 0000 MHz Con nect a spec tru m Maximum value
L29. L2 5
an aly zer or RF
(More Ih an - 3dBm )
L26. L27
vo ltmeter to CP (L29
slde).
DIA ose
• Displayed frequency: 512.0000 MHz Conneet a spectrum
Maximum vafue
-
L11 .l1 2
1
FRE O UE NCY analyzer or RF
( Mo re Ihan -18dBm)
voltmeter la CP (L19
-
ste e) .
1 51 LO
1
• Displayed frequency: 145. 0000 MHz Conneet a frequency 923.7 000 MHz
R35
OUTP UT - M_
: FM c ou nter 10 J4.
FREOUENCY
2 - Disp lay frequency : 149.9999 MHz 923.6999 MHz R41
NOTE: Repeat steps 1. and 2 (several times).
•
6·3 LOCAL OSCILLATOR ADJUSTMENT
MEASUREMENT
ADJUSTMENT
POINT
ADJUSTMENT
ADJUSTMENT CONDITIONS
VALUE
UNIT LOCATION
UNIT ADJUST
3rd LO
1
- Displayed frequency: 145. 0000 MHz M AIN
Co n nect a trequen cy 10.2450 M Hz MAIN C 132
OUTPUT
-M ode
: U SB cou nter 10 R 21 7 (C93
FRE QUEN CY
slde).
BFO
1
- Displayed frequency: 145.0000 MHz
Conneet a freque ncy
456.5 kHz 114
F
RE OU ENCY - M_
: USB counter 10 W29.
2
453.5 kHz
C1Sl
6-2