Vertex Standard HX280S, Руководство пользователя

Страница: 2 / 5

FCC ID: K6630383X20
IC: 511B-30383X20
Alignment
Vertex Standard Co.,Ltd.
2
Required Test Equipment
ˆ
RF Signal Generator with calibrated output level at 200 MHz
ˆ
Deviation Meter (linear detector)
ˆ
AF Millivoltmeter
ˆ
SINAD Meter
ˆ
Inline Wattmeter with 5% accuracy at 200 MHz
ˆ
Regulated DC Power Supply: 0V to 10 VDC, 3A
ˆ
50-ohm Non-reactive Dummy Load: 10W at 200 MHz
ˆ
Frequency Counter: > 0.1 ppm accuracy at 200 MHz
ˆ
AF Signal Generator
ˆ
DC Voltmeter: high impedance
ˆ
VHF Sampling Coupler
ˆ
AF Dummy Load: 16 Ohms, 1 W
ˆ
Oscilloscope
ˆ
Spectrum Analyzer
ˆ
HX270S/E Marine Transceiver
ˆ
IBM® PC/compatible computer with Microsoft® Windows® 2000, XP, or Vista
ˆ
Standard Horizon HX280S Service Flag Controller Program and Alignment Jig.
Alignment Preparation & Precautions
A dummy load and inline wattmeter must be connected to the main antenna jack in all
procedures that call for transmission. Correct alignment is not possible with an antenna.
After completing one step, read the following step to determine whether the same test
equipment will be required. If not, remove the test equipment (except dummy load and
wattmeter, if connected) before proceeding.
Correct alignment requires that the ambient temperature be the same as that of the
transceiver and test equipment, and that this temperature be held constant between 68 °F
and 86 °F (20 °C and 30 °C). When the transceiver is brought into the shop from hot or cold
air it should be allowed some time for thermal equalization with the environment before
alignment. If possible, alignments should be made with oscillator shields and circuit boards
firmly affixed in place. Also, the test equipment must be thoroughly warmed up before
beginning.
Note: Signal levels in dB referred to in this procedure are based on 0 dBµ = 0.5 µV
(closed circuit).