Vertex Standard GX1100S User manual

FCC ID:K6630373X3D
IC: 511B-30373X3S
Alignmenmt
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GX1100S Alignment
The GX1100S/E has been carefully aligned at the factory for the specified performance
across the marine band.
Realignment should therefore not be necessary except in the event of a component
failure. All component replacement and service should be performed only by an
authorized Standard Horizon representative, or the warranty policy may be voided.
The following procedures cover the sometimes critical and tedious adjustments that are
not normally required once the transceiver has left the factory. However, if damage
occurs and some parts are replaced, realignment may be required. If a sudden problem
occurs during normal operation, it is likely due to component failure; realignment
should not be done until after the faulty component has been replaced.
We recommend that servicing be performed only by authorized Standard Horizon
service technicians who are experienced with the circuitry and fully equipped for repair
and alignment. Therefore, if a fault is suspected, contact the dealer from whom the
transceiver was purchased for instructions regarding repair. Authorized Standard
Horizon service technicians realign all circuits and make complete performance checks
to ensure compliance with factory specifications after replacing any faulty components.
Those who do undertake any of the following alignments are cautioned to proceed at
their own risk. Problems caused by unauthorized attempts at realignment are not
covered by the warranty policy. Also, Standard Horizon, a division of Vertex Standard
must reserve the right to change circuits and alignment procedures in the interest of
improved performance, without notifying owners. Under no circumstances should any
alignment be attempted unless the normal function and operation of the transceiver are
clearly understood, the cause of the malfunction has been clearly pinpointed and any
faulty components replaced, and the need for realignment determined to be absolutely
necessary.
The following test equipment (and thorough familiarity with its correct use) is
necessary for complete realignment. Correction of problems caused by misalignment
resulting from use of improper test equipment is not covered under the warranty policy.
While most steps do not require all of the equipment listed, the interactions of some
adjustments may require that more complex adjustments be performed afterwards. Do
not attempt to perform only a single step unless it is clearly isolated electrically from all
other steps. Have all test equipment ready before beginning, and follow all of the steps
in a section in the order presented.

FCC ID:K6630373X3D
IC: 511B-30373X3S
Alignmenmt
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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: 13.8 VDC, 10A
50-ohm Non-reactive Dummy Load: 30W 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: 4 Ohms, 10 W
Oscilloscope
Spectrum Analyzer
CP180 GPS/Chart Plotter
GX5500S Marine Transceiver
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).

FCC ID:K6630373X3D
IC: 511B-30373X3S
Alignmenmt
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Main Reference Frequency Adjustment
Setup the test equipment as shown below.
Set the channel to CH16.
Use the [H/L] key to set the transceiver to “LOW” power.
With the PTT switch pressed, adjust TC1001 so that the Frequency Counter
reading is 156.800 MHz ±100 Hz.
Transmit Power Adjustment
Setup the test equipment as shown below.
Set the channel to CH16.
Use the [H/L] key to set the transceiver to “HI” power.
With the PTT switch pressed, adjust VR1001 so that RF output power is 24 W ±0.3
W.
Release the PTT switch, then set the transceiver to “LOW” power by the [H/L] key.
With the PTT switch pressed, adjust VR1002 so that RF output power is 0.8 W ±0.1
W.
Release the PTT switch.
TX Deviation Adjustment
Setup the test equipment as shown below.
Set the AF Signal Generator output to 200 mVrms at 1 kHz.
Set the channel to CH16.
With the PTT switch pressed, adjust VR1003 so that the maximum deviation is 4.2
kHz ±0.1 kHz.
Release the PTT switch.
Receiver Front-end Adjustment
Setup the test equipment as shown below.
Set the spectrum analyzer as shown below:
CENTER: 159.000 MHz
SPAN: 20.000 MHz
RBW, VBW: 30 kHz
SWP: 200 ms
Adjust L1009, L1010, L1019, L1024, and L1028 until the wave form shown in below
is obtained.

FCC ID:K6630373X3D
IC: 511B-30373X3S
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Software Alignment/Confirmation Mode
Overview of Software Alignment Mode
The “Software Alignment Mode” has been build in the microprocessor in order to adjust
and confirm the performance of transceiver.
The purpose is to adjust transceiver simply and to confirm the performance of
transceiver smoothly.
Starting Software Alignment Mode
Set the channel to CH16, then turn the VOL knob counter clockwise to turn off the
radio.
Short the TEST points (JP1001).
Setup the test equipment as shown below.
Turn the VOL knob clockwise to turn on the radio while press and holding the
[CALL] and [DISTRESS] keys. The LCD will be shown the Alignment Item (1st
Item is Threshold “TH:xxx”.)
Set the RF Signal Generator output to 156.800 MHz, at a level of –6dBµ, ±3.0 kHz
deviation with a 1 kHz audio tone.
Press the [16/9] key.
Press the [ENT] key to save the new setting.
Press the [SCAN(MEM)] key to recall the Alignment Item “TI:xxx(TIGHT)”.
Set the RF Signal Generator output to 156.800 MHz, at a level of +3dBµ, ±3.0 kHz
deviation with a 1 kHz audio tone.

FCC ID:K6630373X3D
IC: 511B-30373X3S
Alignmenmt
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Press the [16/9] key.
Press the [ENT] key to save the new setting.
Press the [SCAN(MEM)] key to recall the Alignment Item “DSC:xxx(CH70 SQL)”.
Set the RF Signal Generator output to 156.525 MHz, at a level of –4dBµ, ±3.0 kHz
deviation with a 1 kHz audio tone.
Press the [16/9] key.
Press the [ENT] key to save the new setting.
Press the [SCAN(MEM)] key to recall the Alignment Item “DC:xxx”.
Press the [16/9] key.
Press the [ENT] key to save the new setting.
This completes the Software Alignment Mode. To save all settings and exit, press and
hold the [DISTRESS] key for one second. Turn the transceiver’s power off, then
disconnect the Jumper from the TEST points (JP1001).