TK-190
TK-190
41
42
ADJUSTMENT
Adjustment Point
■
Foil side
■
Component side
3. BPF coil
Tracking
Panel
ANT
TX-RX
L201
generator
L202
L206
Spectrum
TX-RX
TP3
analyzer
4. MCF
1) Set panel test mode
Tracking
Panel
TP10
TX-RX
L302
Adjust the coil so that it becomes the Spectrum
adjustment
CH No. : 1
generator
L303
waveform shown in Fig. 2.
Signalling No. : 1
L304
Use this
Spectrum
TX-RX
TP11
adjustment
analyzer
procedure
after replace-
ing any of
the MCF
coils.
5. Sensitivity
1) Set panel test mode
SSG
Panel
ANT
Panel
TOP1/
Adjust for maximum 12dB SINAD or more
adjustment
CH No. : 3
TOP2
SINAD
and check
Signalling No. : 1
AF VTVM
Side
Universal
Select SNS
∗ ∗ ∗
Oscilloscope
in panel tuning mode
Distortion
Push Monitor to 3 point
meter
adjustment mode
Audio
Select SNS
∗ ∗ ∗
analyzer
L
SSG freq. : Low
output : –116dBm/0.35
µ
V
2) Push Tone2 to select
SNS
∗ ∗ ∗
M
SSG freq. : Center
3) Push Tone2 to select
SNS
∗ ∗ ∗
H
SSG freq. : Hi
6. Tight
1) Set panel test mode
Adjust to point of
squelch
CH No. : 3
opening squelch
adjustment
Signalling No. : 1
Select SQ T
∗ ∗ ∗
in panel tuning mode
SSG output : 6dB above to
12dB SINAD level
ADJUSTMENT
Fig. 1 :K2
ATT10dB
A_write B_blank
MKR
15.00 kHz
0.749 dB
TG LEVEL
REF -64.0 dBm
2dB/
RBW
1 kHz
VBW
1 kHz
SWP
500 ms
SPAN 50.0 kHz
CENTER 128.55000 MHz
-25 dBm
Fig. 2
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
7. Squelch
1) Set panel test mode
SSG
Panel
ANT
Panel
TOP1/
Adjust to point of
adjustment
CH No. : 3
TOP2
opening squelch
Signalling No. : 1
AF VTVM
Side
Universal
Select SQ O
∗ ∗ ∗
Oscilloscope
in panel tuning mode
Distortion
SSG output : 3dB below to
meter
12dB SINAD level
analyzer
8. Squelch
1) Set panel test mode
Check
Squelch must be opened
check
CH No. : 3
Signalling No. : 1
SSG output : –118dBm/0.28
µ
V
2) SSG output : –127dBm
Squelch must be closed
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
E
E
E
TP1
TP10
TP11
E
TP7
TP3
E
TP2
IC414
IC406
X101
L800
L302
L303
L304
L201
L202
L206
TP6
TP5
TP4
E
IC603
IC607
IC600