Kenwood TS-990S Service Manual page 182

TS-990S
Item Condition
20. SUB RX 1) Sub Display f.:
Trap fre- 21.400000MHz
quency Mode: USB
P.AMP: ON
•11.3745MHz AGC: OFF
SSG f.: 11.3745MHz
SSG output: –30dBm
(7.07mV)
Disconnect the cable from
CN200 and connect the SSG
output to CN200.
21. SUB RX FM 1) Sub Display f.:
discriminator 29.200000MHz
Mode: FM
P.AMP: ON
AF output: 0.63V/8
SSG f.: 29.200MHz
SSG output: –53dBm
(0.501mV)
MOD: 1kHz
DEV: 3kHz
22. SUB RX 1) Menu No.: 37 (1.81MHz,
Carrier point USB)
P.AMP: OFF
• XF484 AGC: OFF
10.695M/ FIL/SEL(S): 10M 2.7kHz
2.7kHz SSG1 f.: 1.81010MHz
SSG2 f.: 1.81290MHz
SSG output: –33dBm
(5.01mV)
• XF485 2) Menu No.: 38 (1.81MHz,
11.374M/ USB)
2.7kHz P.AMP: OFF
AGC: OFF
FIL/SEL(S): 11M 2.7kHz
SSG1 f.: 1.81010MHz
SSG2 f.: 1.81290MHz
SSG output: –33dBm
(5.01mV)
• XF486 3) Menu No.: 39 (1.81MHz, CW)
11.374M/ P.AMP: OFF
500Hz AGC: OFF
FIL/SEL(S): 11M 500Hz
SSG1 f.: 1.809700MHz
SSG2 f.: 1.810300MHz
SSG output: –33dBm
(5.01mV)
182
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
AF VM TX-RX CN200 TX-RX
(A/2) (A/2)
Rear EXT.
panel SP2
SSG
Oscillo-
scope
AF VM
Distortion
meter
DM.SP
Audio
analyzer
SSG1 TX-RX CN200 Front
SSG2 (A/2) TP2 panel
2 signal (CAR)
pad
Oscillo-
scope
Adjustment
Parts Method
L352 AF output min.
L355 Repeat adjust for 2
to 3 times.
L608 Adjust the L103 to AF max.
get the AF maximum
output of 0.63V/ 8
ohms.
Check the distortion 2.3% or less
and the waveform is
a good sine wave.
[UP]/[+] Change the adjust-
(F5) or ment values to get
[DOWN] the waveform as
/[-](F4) shown.
Specifi cations/Remarks
OK
NG