Adjustment / 调整; Test Equipment Required For Alignment; Test Channel; Test Signaling - Kenwood NXR-1800 Service Manual

4.1

Test Equipment Required for Alignment

Test Equipment
1. Standard Signal
Generator (SSG)
2. Power Meter
3. Deviation Meter
4. Digital Volt Meter
(DVM)
5. Oscilloscope
6. High Sensitivity Frequency
Counter
7. Ammeter
8. Audio Analyzer
9. Audio Generator (AG)
10. Voltmeter
4.2

Test Channel

E
No.
RX (MHz) TX (MHz)
1 485.050000 485.100000
2 450.050000 450.100000
3 519.950000 519.900000
4 485.000000 485.000000
5 485.200000 485.200000
6 485.400000 485.400000
7~16 -
4.3

Test Signaling

Analog
No. RX
1 None
2 None
3 QT:67.0Hz
4 QT:151.4Hz
5 QT:210.7Hz
6 QT:254.1Hz
7 DQT:D023N
8 DQT:D754I
9 None
10 None
1-56 (No.RA094<Rev.002>)
ADJUSTMENT / 调整
Frequency Range
Modulation
Output
When performing the Frequency adjustment, the following accuracy is necessary.
t0.001ppm
Use a standard oscillator for adjustments, if necessary.
Input Impedance
Operation Frequency
Measurement Capability
Frequency Range
Measuring Range
Input Impedance
Frequency Range
Frequency Stability
Frequency Range
Voltage Range
Frequency Range
Output
Measuring Range
Input Impedance
E2
RX (MHz) TX (MHz)
435.050000 435.100000
400.050000 400.100000
469.950000 469.900000
435.000000 435.000000
435.200000 435.200000
435.400000 435.400000
- -
TX
None
100Hz Square Wave
QT:67.0Hz
QT:151.4Hz
QT:210.7Hz
QT:254.1Hz
DQT:D023N
DQT:D754I
Test Tone Encode
CW ID Encode (ID:VVV)
SECTION 4
Major Specifications
400 to 520MHz
Frequency modulation and external modulation
-127dBm/0.1uV to greater than -20dBm/22.4mV
50
400 to 520MHz or more
Vicinity of 100W
400 to 520MHz
1V to 20V DC
High input impedance for minimum circuit loading
DC through 30MHz
10Hz to 600MHz
0.2ppm or less
15A or more
50Hz to 10kHz Capability
3mV to 3V Input Level
50Hz to 5kHz
0 to 1V
10V to 1.5V DC or less
50k/V or greater
No.
11 None
DMR
No. RX
1 CC 00 Burst
2 None
3 None
6 None
-
· Signaling number 2 is used for TX modulation signal quality
test. i.e., TX adjacent channel power, FSK error, Occupied
bandwidth, Emission mask, etc.
· Signaling number 3 is used for TX deviation test.
NXDN
No. RX
1 RAN 1
2 RAN 1
3 RAN 1
RAN: Radio Access Number
PN9: Pseudo-Random Pattern
2% or less at 1kHz
50mV to 10Vrms
RX
Courtesy Tone
TX
CC 00 Burst
PN 9 Continuous Pattern
Maximum Deviation Continuous
Pattern
SYNC (Each Slot)+PN9 Burst
Pattern
TX
RAN 1
PN9
Maximum Deviation Pattern
TX