Adjustment - Kenwood NX-300S Service Manual

NX-300(S)
PC Test Mode
Used to check the transceiver using the PC.
This feature is included in the FPU.
■ Frequency and Signaling
The transceiver has been adjusted for the frequencies
shown in the following table. When required, readjust them
following the adjustment procedure to obtain the frequencies
you want in actual operation.
• Test frequency
CH
1
2
3
4
5
6
7~16
• 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
36

ADJUSTMENT

RX (MHz) TX (MHz)
435.05000 435.10000
400.05000 400.10000
469.95000 469.90000
435.00000 435.00000
435.20000 435.20000
435.40000 435.40000
- -
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
• NXDN mode signaling
No. RX
1 RAN1
2 None
3 RAN1
7 None
RAN: Radio Access Number
PN9: Pseudo-Random Pattern (for production only)
PC 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 con-
nected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
8 dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during tuning.
■ 5 reference level adjustments frequency
Tuning point RX (MHz)
Low 400.05000
Low' 417.55000
Center 435.05000
High' 452.55000
High 469.95000
TX
RAN1
PN9
Maximum deviation pattern
FSW+PN9
TX (MHz)
400.10000
417.60000
435.10000
452.60000
469.90000