Kenwood TS-990S Service Manual page 178

TS-990S
Item Condition
12. Carrier point 1) Menu No.: 6 (1.81MHz, USB)
P.AMP: OFF
• XF8/2.7kHz AGC: OFF
FIL/SEL(M): 2.7kHz
SSG1 f.: 1.813MHz
SSG2 f.: 1.810MHz
SSG output: –33dBm
(5.01mV)
• XF5/500Hz 2) Menu No.: 7 (1.81MHz, CW)
P.AMP: OFF
AGC: OFF
FIL/SEL(M): 500Hz
SSG1 f.: 1.810275MHz
SSG2 f.: 1.809725MHz
SSG output: –33dBm
(5.01mV)
• XF6/270Hz 3) Menu No.: 8 (1.81MHz, CW)
P.AMP: OFF
AGC: OFF
FIL/SEL(M): 270Hz
SSG1 f.: 1.810145MHz
SSG2 f.: 1.809855MHz
SSG output: –33dBm
(5.01mV)
13. SUB RX 1) Menu No.: 45 (100kHz, USB)
1st mixer bal- P.AMP: OFF
ance ANT: Open (X57-827 A/2
CN200 Open)
14. SUB RX 1) Sub display f.: 1.800000MHz
Trap fre- Mode: USB
quency P.AMP: ON
Spectrum analyzer setting
• 1MHz Start frequency: 0MHz
Stop frequency: 3MHz
TG level: -10dBm
Disconnect the cable from
CN200 and connect the
tracking generator output to
CN200.
Connect the spectrum ana-
lyzer input to CN230.
178
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
SSG1 RX CN1 Front
SSG2 (A/2) TP1 panel
2 signal
pad
Oscillo-
scope
AF VM Rear EXT. TX-RX
panel SP2 (A/2)
Tracking TX-RX CN200 TX-RX
generator (A/2) CN230 (A/2)
Spectrum
analyzer
Adjustment
Parts Method
[UP]/[+] Change the adjust-
(F5) or ment values to get
[DOWN] the waveform as
/[-](F4) shown.
VR401 Noise min. Note: When the noise level
minimum is not understood,
adjust the volume position of
VR401 as shown in the fi gure
below.
L208 Adjust the coil to get
a null point at 1MHz
as shown.
Specifi cations/Remarks
OK
NG
1.00MHz 1.705MHz