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FCC ID: K6630303X3S 

IC ID: 511B-30303X3S 

Alignment 

4/6

 

Vertex Standard Co,. Ltd. 

 

Adjustment of Receiver Front-end 

Adjust the receiver front-end coil. 

ˆ

  Setup the test equipment as shown below. 

ˆ

  Set the center frequency of the 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. 

ˆ

 Adjust 

L

1010

L1012

L1022

L1026

, and 

L1027

 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 take the lowest possible value at the stop band near 150 MHz and the 

highest possible value at the band near 156 MHz. 

Each coil shall be adjusted at the range between the initial condition and right and left 

revolving. 

 

GX1255S-FRONT-END

ATTEN 20dB 

RL 10.0dBm

10dB/

CENTER  159.00 MHz

 

*RBW  30 kHz

VBW  30 kHz

SPAN  20.00 MHz

SWP  56.0 ms

Содержание GX1000S

Страница 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...

Страница 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...

Страница 3: ...idth Adjustment Connect the wattmeter and 50 ohm dummy load to the antenna jack Use the H L key to set transceiver to high power and set the channel to CH16 With the PTT switch pressed adjust VR1001 so that RF power is 25 W Use the H L key to set transceiver to low power and set the channel to CH16 With the PTT switch pressed adjust VR1002 so that RF power is 0 8 W Adjustment of PLL Frequency Adju...

Страница 4: ...ave 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 take the lowest possible value at the stop band near 150 MHz and the highest possible value at the band near 156 MHz Each coil shall be adjusted at the range...

Страница 5: ... 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 key confirm that the position data is displayed on the...

Страница 6: ...I 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 SET 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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