37
ADJUSTMENT
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
TK-6110
3. BPF
1) CH-SIG : 2-1
Spectrum
TX-RX
CN201
TX-RX
L202
Adjust the coils in
Adjust it so it is almost
Select _ _L
analyzer
(A/3)
(A/3)
L203
the following order
symmetrical, and so the gain
SENS_ _75 : K
L206
: L202, L203, L206,
is maximum.
SENS_ _50 : K2
Tracking
Rear
ANT
L207
L207
in tune mode
generator
panel
Spectrum analyzer
Span : 50MHz
K
K2
Scale : 10dB/div
Tracking generator
Output : –20dBm
4. MCF
1) CH-SIG : 1-1
Spectrum
TX-RX
CN203
TX-RX
L222
Adjust it so it is almost symmetrical, and so the
Spectrum analyzer
analyzer
(A/3)
(A/3)
L223
gain is maximum.
Span : 25kHz
L224
Adjust the coils in the following order : L222, L223,
Scale : 10dB/div
Tracking
CN204
L225
L224, L225.
Center frequency : 128.55MHz generator
Tracking generator
Output : –20dBm
5. Delay line
1) CH-SIG : 1-1
Spectrum
TX-RX
CN204
TX-RX
TC202 Adjust it so it is almost symmetrical, and so the
NB
Spectrum analyzer
analyzer
(A/3)
(A/3)
TC204 gain is maximum.
Span : 20MHz
Scale : 10dB/div
Tracking
CN202
Center frequency : 128.55MHz generator
Tracking generator
Output : –20dBm
6. Distortion
1) CH-SIG : 1-1
SSG
Rear
ANT
TX-RX
L237
Adjust it, and so
Distortion is minimum.
SSG output : –53dBm/501
µ
V
panel
(A/3)
the distortion is
AF output : 1V/4
Ω
Distortion
EXT.SP
minimum.
meter
AF VTVM
Oscilloscope
4
Ω
dummy
load
START 10.000,000MHz
STOP 60.000,000MHz
CH2 S21 log MAG 10dB / REF 0dB 1 : 15.40dB
1
Marker 1
: 29.7MHz
START 20.000,000MHz
STOP 70.000,000MHz
CH2 S21 log MAG 10dB / REF 0dB 1 : 16.288dB
1
Marker 1
: 35MHz
Center frequency
128.550,000MHz
SPAN 0.100,000MHz
CH2 S21 log MAG 10dB / REF –20dB 1 : –13.306dB
1
Marker 1
: 128.550MHz
Center frequency
128.550,000MHz
SPAN 20.000,000MHz
CH2 S21 log MAG 10dB / REF 0dB 1 : –23.286dB
1
Marker 1
: 128.55MHz