Adjustment - Kenwood UBZ-LJ8 Service Manual

Required Test Equipment
1. DC V.M and Tester (DVM)
1) High input impedance
2. RF VTVM (RF V.M)
1) Input impedance : 1MΩ min., 2pF max.
2) Voltage range : F.S = 10mV to 300V
3) Frequency range : 500MHz or more
3. Frequency Counter (f. counter)
1) Input sensitivity : Approx. 500mV
2) Frequency range : 500MHz or more
3) Measurement stability : 0.2ppm or less
4. DC Power Supply
1) Voltage : 0V to 10V, variable
2) Current : Approx. 1A
5. Power Meter
1) Measurement range : Approx. 1W
2) Input impedance : 50Ω
3) Frequency range : 500MHz or more
6. AF VTVM (AF V.M)
1) Input impedance : 1MΩ or more
2) Voltage range : F.S = 1mV to 3V
2) Frequency range : 50Hz to 10kHz
7. AF Generator (AG)
1) Output frequency : 100Hz to 10kHz
2) Output voltage : 0.5mV to 1V
8. Linear Detector or Deviation meter
1) Frequency range : 500MHz or more
9. Distortion Meter
1) Frequency range : 30Hz to 100kHz
2) Input level : 50mV to 10Vrms
3) Measurement stability : 3% or less at 1kHz
10. SSG
1) Frequency range : 30 to 500MHz
2) Modulation : FM
3) Output level : –133dBm (0.05µV) to –13dBm (50.1mV)
11. Oscilloscope
1) Measurement range : DC to 30MHz
12. Dummy Load
1) 8Ω, 1W

ADJUSTMENT

Setting
1. Power voltage : DC 4.5V
Current protection : Approx. 300mA
2. Frequency
• Channel frequency (12.5kHz step)
Channel
1
2
3
4
5
6
7
8
• Tone frequency (Hz)
No. Frequency
1
2
3
4
5
6
7
8
9
10
11
12
13
3. SSG standard modulation
(Mod : 1kHz, DEV : ± 1.5kHz)
UBZ-LJ8
TX frequency
446.00625
446.01875
446.03125
446.04375
446.05625
446.06875
446.08125
446.09375
No. Frequency
67.0 14 107.2
71.9 15 110.9
74.4 16 114.8
77.0 17 118.8
79.7 18 123.0
82.5 19 127.3
85.4 20 131.8
88.5 21 136.5
91.5 22 141.3
94.8 23 146.2
97.4 24 151.4
100.0 25 156.7
103.5 26 162.2
(MHz)
RX frequency
446.00625
446.01875
446.03125
446.04375
446.05625
446.06875
446.08125
446.09375
No. Frequency
27 167.9
28 173.8
29 179.9
30 186.2
31 192.8
32 203.5
33 210.7
34 218.1
35 225.7
36 233.6
37 241.8
38 250.3
15