Kenwood UBZ-LJ8, Руководство по обслуживанию

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UBZ-LJ8
19
Item Condition
Measurement Adjustment
Specifications/Remarks
Test-
equipment
Unit Terminal Parts Unit Method
ADJUSTMENT
PLL Section
1. VCO lock voltage 1) 4CH : 446.04375MHz DVM TX-RX LV Check 0.7~2.7V
RX (B/2)
TX 2) 4CH : 446.04375MHz
PTT : ON
2. Reference 1) 4CH : 446.04375MHz Power meter TX-RX ANT TX-RX VR3 446.04375MHz
±
100Hz
oscillator PTT : ON f. counter (B/2) (B/2)
frequency
Item Condition
Measurement Adjustment
Specifications/Remarks
Test-
equipment
Unit Terminal Parts Unit Method
Item Condition
Measurement Adjustment
Specifications/Remarks
Test-
equipment
Unit Terminal Parts Unit Method
1. TX power 1) 1CH : 446.00625MHz Power meter TX-RX ANT TX-RX VR4 500mW
±
10mW
and current PTT : ON Ammeter (B/2) (B/2) Current check 500mA or less
2. MAX 1) 1CH : 446.00625MHz Power meter TX-RX ANT VR1 2.0kHz
±
0.05kHz
deviation AG : 1kHz/100mV Linear (B/2) According to the
PTT : ON detector TX-RX MIC , –.
(A/2)
3. MIC 1) 1CH : 446.00625MHz AG Check 1.2~1.9kHz
sensitivity AG : 1kHz/5mV AF V.M
PTT : ON
4. CTCSS 1) Enter the adjustment mode, Linear TX-RX ANT [UP], Write the new 0.35kHz
±
0.05kHz
deviation then write the CTCSS detector (B/2) [DOWN] adjustment value
deviation level. by pushing [PTT].
1CH : 446.00625MHz
Tone No. : 24 (151.4Hz)
PTT : ON
2) Tone No. : 38 (250.3Hz) Check 0.25~0.40kHz
PTT : ON
1. Quad-coil 1) 4CH : 446.04375MHz SSG TX-RX ANT TX-RX L36 Maximum AC level 0.9V or more
adjustment SSG output : –53dBm (501
µ
V) (B/2) (B/2) (peak to peak) using
SSG MOD : 1kHz Oscilloscope TX-RX SP oscilloscope
SSG DEV : 1.5kHz DVM (A/2)
AF VOL : 10 o’clock position
2. Sensitivity 1) 4CH : 446.04375MHz SSG TX-RX ANT Check SINAD : 20dB or more
SSG output : –115dBm (0.398
µ
V) (B/2)
SSG MOD : 1kHz Distortion TX-RX SP
SSG DEV : 1.5kHz meter (A/2)
AF VOL : 0.63V/8
Ω
Oscilloscope
CCITT filter : ON AF V.M
3. Squelch 1) 4CH : 446.04375MHz SSG TX-RX ANT Check Squelch open
SSG output : –116dBm (0.35
µ
V) (B/2)
2) SSG output : –127dBm (0.1
µ
V) Oscilloscope TX-RX SP Squelch close
AF V.M (A/2)
4. BATT 1) BATT terminal DC power TX-RX VCC (+) LCD check or light on
: DC 3.35V
±
0.01V supply (A/2) GND (–)
2) BATT terminal DVM or lignt on
: DC 3.80V
±
0.01V
Transmitter Section
Receiver Section