Kenwood TM-481A Service Manual page 27

Receiver Section (Refer to the Table 1 on page 22 for the frequencies which will apply in the adjustment mode.)
Item Condition
1. Band Pass 1) Adj item: [BPL.]
Tuning Adjust: [
[Low] 2) Spectrum analyzer setting
Center-f: 400.050MHz
Span: 200MHz
RBW: 100kHz
VBW: 100kHz
ATT: 5dB
3) Tracking generator output
: –30dBm
[Center] 4) Adj item: [BPC.]
Adjust: [
5) Spectrum analyzer setting
Center-f: 435.050MHz
Span: 200MHz
RBW: 100kHz
VBW: 100kHz
ATT: 5dB
6) Tracking generator output
: –30dBm
[High] 7) Adj item: [BPH.]
Adjust: [
8) Spectrum analyzer setting
Center-f: 469.950MHz
Span: 200MHz
RBW: 100kHz
VBW: 100kHz
ATT: 5dB
9) Tracking generator output
: –30dBm
2. Squelch 1) Adj item: [SQTL.]
Tight Adjust: [
2) SSG output
• Wide : –117dBm (0.32µV)
[Low] SSG MOD: 1kHz
SSG DEV: 3kHz
[Center] 3) Adj item: [SQTC.]
Adjust: [
4) SSG output
: –117dBm (0.32µV)
[High] 5) Adj item: [SQTH.]
Adjust: [
6) SSG output
: –117dBm (0.32µV)
• Narrow 7) Adj item: [SQTC.]
[Center] ("N" icon appear)
Adjust: [
8) SSG output
: –117dBm (0.32µV)
SSG MOD: 1kHz
SSG DEV: 1.5kHz
ADJUSTMENT
Measurement
Test-
Unit
equipment
Spectrum Rear
] analyzer panel
Tracking TX-RX
generator (A/2)
]
]
SSG Rear
] Oscilloscope panel
AF VM
Distortion
meter
]
]
]
Adjustment
Terminal Unit Parts
ANT Front Tuning By turning the Tun-
panel control ing control, adjust
the band-pass fi lter
BPF waveform as shown.
ANT Write
EXT.
SP
TM-481A
Specifi cations / Remarks
Method
Refer to Fig. 1 (page 23).
Refer to Fig. 2 (page 23).
Refer to Fig. 3 (page 23).
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