Kenwood TK-372G, Руководство по обслуживанию

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TK-372G
41
ADJUSTMENT
Item Condition
Measurement Adjustment
Specifications/
Test equipment Terminal Parts Method
Remark
Fig. 1 Fig. 2
K4 type
1. Sensitivity Adj item [SENS] DVM Encoder knob f
L
: ([S
.
E N S]) : [55]
Adjustment Adjust [
∗∗∗
] f
C
: (S
.
E
.
N
.
S) : [125]
f
L
f
c
f
H
[S
.
E N S]
➞
[S
.
E
.
N
.
S]
➞
[S
.
E
.
N
.
S
. .
] f
H
: (S
.
E
.
N
.
S
. .
) : [190]
2. BPF (PANEL TEST MODE) Tracking generator ANT TC301, TC302, Adjust wave form
CH-Sig 2-1 spectrum analyzer TC303 to figure 1.(f
L
)
Tra-G setting -40dBm BPF
CH-Sig 1-1 Check wave form to figure 2.(f
C
)
CH-Sig 3-1 Check wave form to figure 2.(f
H
)
3. Sensitivity [Panel Test Mode] SSG ANT
Check 1) CH-Sig:1-1 AF VTVM Check 12dB SINAD or
SSG OUT Oscilloscope more
Wide:-118dBm (0.28
µ
V)
(MOD:1kHz /
±
3kHz)
Narrow:-116dBm (0.35
µ
V)
(MOD:1kHz /
±
1.5kHz)
4. Squelch (Open) 1) Adj item [SQL3] Encoder Adjust to the
Adjust Adjust [
∗∗∗
] knob squelch
[Wide] SSG OUT squelch. threshold point
Wide:-123dBm
[Narrow] 2) Adj item [SQL3.]
Adjust [
∗∗∗
]
SSG OUT
Narrow:-126dBm
5. Squelch(Tight) 1) Adj item [SQL9] Adjust to the
Adjust Adjust [
∗∗∗
] squelch
[Narrow] 2) Adj item [SQL9.] threshold point
SSG OUT:-115dBm (0.4
µ
V)
6. Squelch [Panel Test Mode] Check Squelch must
Check 1) CH-Sig:1-1 be opened.
SQ Level : [SQL5]
SSG OUT:
-118dBm (0.28
µ
V)
2) SSG OUT:OFF Squelch must
be closed.