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FCC ID: K66GX1280S

Alignment

Vertex Standard Co,. Ltd.

3

DISPLAY

RX Frequency

TX Frequency

SCAN Channel

EXP01

156.050 MHz

156.050 MHz

X

EXP02

---

157.425 MHz

X

EXP03

163.275 MHz

---

X

EXP04

155.050 MHz

155.050 MHz

O

EXP05

162.025 MHz

162.025 MHz

X

EXP06

163.575 MHz

158.975 MHz

X

WX10

163.275 MHz

---

O

(B) In CH70, ever time you are in transmit mode, (every time you press PTT), the

following test tone can be outputted:

1st transmission:

Synthetic tone of 1300 Hz and 2100 Hz

2nd transmission:

1300 Hz

3rd transmission:2100 Hz
4th transmission:No Modulation
5th transmission:Return to 1st transmission

(C) Scan the channels between WX10 and EXP04 in the SCAN mode.

Starting Test Mode
Confirm that turn off the transceiver, and short the TEST points. Press the 

PWR/VOL

switch while press and holding the 

DIST

 and 

DW

 keys.

Confirmation of VCO
-- Confirmation --

ˆ

 

Connect the DC voltmeter to the test point (LOCK TP).

ˆ

 

Use the 

UP/DOWN

 key to set the channel to EXP04, confirm that voltage on the

test point is over 1.0 V in the receive and transmit mode.

ˆ

 

Use the 

UP/DOWN

 key to set the channel to EXP05, confirm that voltage on the

test point is below 5.0 V in the transmit mode.

ˆ

 

Use the 

UP/DOWN

 key to set the channel to EXP06, confirm that voltage on the

test point is below 5.0 V in the receive 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 – High Power Setting --

ˆ

 

Connect the wattmeter and 50-ohm dummy load to the antenna jack.

Press the 

SCAN

 key, then appear  |ALIGNMENT | on display.

  

|01:HI PO

|

|DATA:xxx

|

ˆ

 

With the 

PTT

 switch pressed, rotate the dial knob so that RF power is 25 W, then

Содержание GX1280S

Страница 1: ...r 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 cove...

Страница 2: ...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 be...

Страница 3: ...s Press the PWR VOL switch while press and holding the DIST and DW keys Confirmation of VCO Confirmation Connect the DC voltmeter to the test point LOCK TP Use the UP DOWN key to set the channel to EX...

Страница 4: ...er is between 23 W and 27 W Set transceiver to low power and confirm that RF power is between 0 5 W and 1 0 W Adjustment of PLL Frequency Adjust the frequency in the transmit mode and local frequency...

Страница 5: ...front end coil Adjustment Setup the test equipment as shown below Set the center frequency of t he 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...

Страница 6: ...FCC ID K66GX1280S Alignment Vertex Standard Co Ltd 6...

Страница 7: ...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 transceive...

Страница 8: ...d in the LCD of the test transceiver Confirm that the conformation transceiver receives the response from the test transceiver and outputs beep Press the CALL SET key of the conformation transceiver a...

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