FCC ID: K6620393X50
IC: 511B-20393X50
Alignment
Vertex Standard Co.,Ltd.
2
the steps in a section in the order presented.
RF Signal Generator with calibrated output level at 200 MHz
Deviation Meter (linear detector)
In-line Wattmeter with 5% accuracy at 200 MHz
50-Ohm 100-W RF Dummy Load
8-Ohm AF Dummy Load
Regulated DC Power Supply adjustable from 6 to 15 VDC, 20A
Frequency Counter: 0.2-ppm accuracy at 200 MHz
AF Signal Generator
AC Voltmeter
DC Voltmeter: high impedance
VHF Sampling Coupler
SINAD Meter
Alignment Preparation & Precautions
A 50-Ohm RF load and in-line wattmeter must be connected to the antenna jack in all
procedures that call for transmission; alignment is not possible with an antenna. After
completing one step, read the next step to see if the same test equipment is 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 ~ 86 °F (20 °C ~ 30 °C). When the transceiver is brought into the shop from hot or
cold air, it should be allowed some time to come to room temperature before alignment.
Whenever 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 the alignment procedure are based on 0dBµ =
0.5µV.
Test Setup
Set up the test equipment as shown below for transceiver alignment.
Entering the Alignment Mode
Alignment of the FT-2900R is performed using a front panel software-based procedure.
