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FCC ID: K6630143X3D 

IC ID: 511B-30143X3D 

Alignment 

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Vertex Standard Co,. Ltd. 

GX3000S Alignment 

 

The 

GX3000S

 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. 
 

Summary of Contents for VXR-9000U

Page 1: ...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 ci...

Page 2: ...etermine 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 20 C and 30 C 68 F and 86 F When the transceiver is brought into the shop from ho...

Page 3: ...t the channel to CH16 adjust TC1002 so that voltage on the TP1008 is below 3 0 V 0 1 V in the transmit mode Adjustment and Confirmation of Transmit Power Adjust power at high and low in the transmit mode and confirm power in the specified bandwidth Adjustment Connect the wattmeter and 50 ohm dummy load to the antenna jack Use the H L NAV key to set transceiver to high power and set the channel to ...

Page 4: ...e spectrum analyzer to 159 00 MHz set SPAN to 20 00 MHz set RBW and VBW to 30 KHz and set SWP to 56 ms Adjust L1001 L1002 L1003 L1004 and L1005 until the wave form shown in below is obtained Note Adjust the output of the tracking generator so that RF AMP and spectrum analyzer will not saturate Figure shows the reference wave form The wave form varies with measuring instruments It is impotent to ta...

Page 5: ...a Input NMEA format data output from GPS receiver to NMEA terminal A of transceiver and display it to the LCD of the transceiver NMEA format data output from GPS receiver is applied to NMEA terminal of transceiver s option connector and LCD of transceiver will show data Confirmation Setup the test equipment as shown below Press and hold the H L NAV key confirm that the position data is displayed o...

Page 6: ... is displayed in the LCD of the test transceiver Confirm that the confirmation transceiver receives the response from the test transceiver and outputs beep Press the CALL MENU key of the confirmation transceiver and turn off the beep Simultaneously confirm that TEST of test transceiver s MMSI is displayed in the LCD of the confirmation transceiver ...

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