Analog Mode Signaling; Nxdn Mode Signaling; Preparations For Tuning The Transceiver; Transceiver Tuning (To Enter Tuning Mode) - Kenwood NX-200 K2 Service Manual

NX-200

• Analog mode signaling

No. RX
1 None
2 None
LTR Data:
AREA=0, GOTO=12
3
HOME=12
ID=47, FREE=25
4 QT: 67.0Hz
5 QT: 151.4Hz
6 QT: 210.7Hz
7 QT: 254.1Hz
8 DQT: D023N
9 DQT: D754I
10 DTMF: 159D
11 None
2-tone:
12 A: 304.7Hz
B: 3106.0Hz
13 Single Tone: 979.9Hz
14 None
15 None
16 MSK

• NXDN mode signaling

No. RX
1 RAN1
2 None
3 RAN1
RAN: Radio Access Number
PN9: Pseudo-Random Pattern (for production only)
Panel Tuning Mode

■ Preparations for tuning the transceiver

Before attempting to tune the transceiver, connect the
unit to a suitable power supply.
Whenever the transmitter is turned, the unit must be
connected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with
a 8Ω dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during tuning.

■ Transceiver tuning (To enter tuning mode)

To enter tuning mode, press the [ ] key while the trans-
ceiver is in test mode. Use the [ ] key to write tuning data
through tuning modes, and the [
requirements (1 to 4096 appears on the LCD).
Use the [ ] key to select the adjustment item through
tuning modes. Use the [ ] key to adjust 5 reference level
adjustments, and use the [Side2] key to switch between
Wide/Narrow/Very narrow.
38
ADJUSTMENT
TX
None
100Hz Square Wave
LTR Data:
AREA=0, GOTO=12
HOME=12
ID=47, FREE=25
QT: 67.0Hz
QT: 151.4Hz
QT: 210.7Hz
QT: 254.1Hz
DQT: D023N
DQT: D754I
DTMF: 159D
DTMF Code 9
2-tone:
A: 304.7Hz
B: 3106.0Hz
Single Tone: 979.9Hz
Single Tone: 1000Hz
MSK
MSK
TX
RAN1
PN9
Maximum deviation pattern
]/[ ] key to adjust tuning
• LCD display in panel tuning mode
CV voltage, AD value, etc
Sub LCD display 2.6
An
Main LCD display
Adjustment
point
L,L',C,H',H
An: Analog narrow mode
Aw: Analog wide mode
Nn: NXDN narrow mode
Nv: NXDN very narrow mode
■ Key operation
Key
Push
[Selector]
[ ] Adjustment value up
[ ] Adjustment value down
[Side1] Auto adjustment start
[Side2] Wide/Narrow/Very narrow -
[ ] Shift to panel test mode
To enter 5 reference level
[ ]
adjustments
Writes the adjustment
[ ]
value
Go to next adjustment
[ ]
item
[Orange]
[PTT]
[0] to [9]
and
[#], [ ]
■ 5 reference level adjustments frequency
Tuning point RX (MHz)
Low 136.05000
Low' 145.55000
Center 155.05000
High' 164.55000
High 173.95000
CNTR 256
Adjustment value
(1~4096)
Proper value guide
(When the frequency
adjustment is necessary,
▼ or ▲ is displayed.)
Adjustment item
Function
Hold (1 second)
-
Continuation up
Continuation down
-
-
-
-
Back to last adjustment
item
-
Transmit
-
TX (MHz)
136.10000
145.60000
155.10000
164.60000
173.90000