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Required Test Equipment
RF Signal Generator with calibrated output level at 200 MHz
Deviation Meter (linear detector)
AF Millivoltmeter
SINAD Meter
Inline Wattmeter with 5% accuracy at 200 MHz
Regulated DC Power Supply: 0V to 10 VDC, 3A
50-ohm Non-reactive Dummy Load: 10W at 200 MHz
Frequency Counter: >0.1 ppm accuracy at 200 MHz
AF Signal Generator
DC Voltmeter: high impedance
VHF Sampling Coupler
AF Dummy Load: 16 Ohms, 1 W
Oscilloscope
Spectrum Analyzer
HX270S Marine Transceiver
IBM® PC/compatible computer with Microsoft® Windows® 2000, XP, or Vista
Standard Horizon HX290 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).
2
Vertex Standard Co., Ltd.
FCC ID: K6630453X20
ID: 511B-30453X20
Alignmenmt
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