Required Test Equipment; Alignment Preparation & Precautions - Vertex Standard VX-1700 Alignment Manual

Required Test Equipment

RF Signal Generator with calibrated output level at 30 MHz
In-line Wattmeter with 5% accuracy at 30 MHz
50 Ohm RF Dummy Load with power rating of 200 W at 30 MHz
16 Ohm RF Dummy Load with power rating of 200 W at 30 MHz
Frequency Counter with 0.02 ppm accuracy at 40 MHz
AF Signal Generator
AC Voltmeter
DC Voltmeter: High input impedance
DC Ammeter
HF Sampling Coupler
IBM PC / compatible Computer with MS-DOS or later operating system
Vertex Standard CT-62 Programming Cable & CE77 Programming/Alignment Software
Alignment Preparation & Precautions
A 50-Ohm RF Dummy Load and in-line wattmeter must be connected to the ANT jack in all
procedures that call for transmission, except where specified otherwise. 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 radio and test
equipment, and that this temperature be held constant between 20º and 30 °C (68º ~ 86 °F).
When the radio is brought into the shop from hot or cold air, it should be allowed 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.
Set up the test equipment as shown below, and apply 13.8V DC power to the transceiver.
The VX-1700 must be programmed for use in the intended system before alignment is attempted.
The frequency and other parameters are loaded from the file during the alignment process.
In order to facilitate alignment over the complete operating range of the equipment, it is
recommended that the channel data first be uploaded and then stored to disk. Alignment Channel
data should then be downloaded. The original data can be replaced at the end of the alignment
process.
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FCC ID: K6610511070
IC ID: 511B-10511070
Alignment
Vertex Standard Co., Ltd.