Kenwood NX-5900, Service Manual

Page: 49 / 120

(No.RA032<Rev.001>)1-49
4.9 Transmitter Section
Item Condition Measurement Adjustment Specifica-
tions
/Remarks
Panel tuning
mode
PC test mode Test-
equip-
ment
Unit Ter-
minal
Unit Parts Method
1.
Ramp
up
Offset 1) Adj item:
[RAMPU]
Adjust:[****]
2) Adj item:
[700M RX/TA
Low]
→
[700M RX/TA
High]
→
[700M TX Low]
→
[700M TX
High]
→
[800M TX Low]
→
[800M TX
High]
→
[800M RX/TA
Low]
→
[800M RX/TA
High]
PTT : ON
Press [ ] key to
store the adjust-
ment value.
1) Adj item:
[Ramp Up Offset]
2) Adj item:
[Frequency:
700MHz Band]
[RX/TA Low]
→
[RX/TA High]
→
[TX Low]
→
[TX High]
[Frequency:
800MHz Band]
[TX Low]
→
[TX High]
→
[RX/TA Low]
→
[RX/TA High]
Press [Transmit]
button.
Press [Apply All]
button to store the
adjustment value.
Power
meter
Ammeter Panel ANT Panel [Panel
tuning
mode]
[
],
[ ]
[PC
test
mode]
[
←
],
[
→
]
[PC test mode]
[Automatic Adjust-
ment]
1) Press [Tune Rump
Offset] button.
2) Press [Apply All] but-
ton to store the adjust-
ment value after the
automatic adjustment
has finished.
3) Check Ramp UP Off-
set Monitor Value Over
45.
[Manual Adjustment]
1) Set the adjustment
value to “1”.
2) Increase the adjust-
ment value slowly while
monitoring the offset
monitor value.
3) Set the adjustment
value when the offset
monitor value exceed
“50”.
2.
Ramp
down
Offset 1) Adj item:
[RAMPD]
Adjust:[****]
2) Adj item:
[700M RX/TA
Low]
→
[700M RX/TA
High]
→
[700M TX Low]
→
[700M TX
High]
→
[800M TX Low]
→
[800M TX
High]
→
[800M RX/TA
Low]
→
[800M RX/TA
High]
PTT : ON
Press [ ] key to
store the adjust-
ment value.
1) Adj item:
[Ramp Down
Offset ]
2) Adj item:
[Frequency:
700MHz Band]
[RX/TA Low]
→
[RX/TA High]
→
[TX Low]
→
[TX High]
[Frequency:
800MHz Band]
[TX Low]
→
[TX High]
→
[RX/TA Low]
→
[RX/TA High]
Press [Transmit]
button.
Press [Apply All]
button to store the
adjustment value.
Power
meter
Ammeter Panel ANT Panel [Panel
tuning
mode]
[
],
[ ]
[PC
test
mode]
[
←
],
[
→
]
[PC test mode]
[Automatic Adjust-
ment]
1) If "Automatic Adjust-
ment" is completed in
the item of "Ramp up
Offset", this item is Com-
pleted in addition.
2) Check ''Ramp Down
Offset'' monitor value
under ''50'' with PTT ON
[Manual Adjustment]
1) Set the following val-
ue with reference to the
value that you applied in
the item of "Ramp up
Offset"
2)Write calcurated Val-
ue "Ramp up Offset-70".
3)If the subtraction re-
sult is less than "1", ap-
ply"1".