Kenwood TK-385, Руководство по обслуживанию

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TK-385
30
ADJUSTMENT
Receiver Section [Panel Tuning Mode except when Panel TEST Mode is specified.]
Item Condition
Measurement Adjustment
Specifications/
Test equipment Unit Terminal Unit Parts Method
Remark
L C H f
→
440 455 470 MHz
(K)
1. Sensitivity 1) Adj item [SENS] Tracking Panel ANT Panel Encoder Adjustment
Adjust Adjust [
∗∗∗
] (K) generator knob Low-edge·f
(BPF Turn a knob
characteristic) 2) Low-edge frequency Specturm TX-RX TP (CN13) and make
Adj item [L SENS] analyzer Need couple peak point.
Spe-Ana setting capacitor
Center·f : 455MHz (1000PF) Adjustment
Span : 200MHz Center·f
RBW : 300kHz Turn a knob
VBW : 10kHz and make
REF level : -10dBm peak point.
ATT : 0dB
Tra-G setting
Input level:-30dBm
3) Center frequency Adjustment
Adj item [C SENS] High-edge·f
4) High-edge frequency Turn a knob
Adj item [H SENS] and make
peak point.
2. Sensitivity [Panel Test Mode] SSG Panel ANT
Check 1) CH-Sig:1-1 AF VTVM Universal Check 12dB SINAD or
SSG OUT Oscilloscope connector more
-117dBm (0.316
µ
V)
(MOD:1kHz /
±
1.5kHz)
3. Squelch 1) Adj item [SQL] Encoder Adjust to point
(Preset) Adjust [
∗∗∗
] knob of opening
Adjust SSG OUT: squelch.
12dB SINAD level
2) Adj item
[L SQL]
➞
[C SQL]
➞
[H SQL]
Adjust [
∗∗∗
]
4. RSSI 1) Adj item [LRSI] After input
(Low) Adjust [
∗∗∗
] signal from
Adjust SSG OUT: SSG,press
12dB SINAD level [D] key.
2) Adj item That
[L LRSI]
➞
[C LRSI]
➞
[H LRSI] numeric will
Adjust [
∗∗∗
] be stored
in memory.
5. Squelch [Panel Test Mode] Check Squelch must
(Preset) 1) CH-Sig:1-1 be opened.
Check SSG OUT:
12dB SINAD level
2) SSG OUT:OFF Squelch must
be closed.
Band Pass Filter Characteristic (K)