Cobra 150GTLDX Bedienungsanleitung PDF herunterladen (Seite 3)

150GTL ALIGNMENT REVISION: 1.0 BURKE

Page:3 print date: 2/14/06

B. RX test equipment setup:

2.0

MAIN ALIGNMENT

2.1 PLL Alignment

STEP PRESET TO CONNECTIONS ADJUST PROCEDURE

RX mode, AM,

28.000MHz

Oscilloscope to TP1 T712

Check for range of 0.2 to

7VDC, then set to 2.8V

2 Change to Band D Oscilloscope to TP1 DC level should be < 6V

3 Same as step 1 Oscilloscope to TP2 T713 Adjust for maximum output

4 Same as step 1

Oscilloscope to 4th test

point of CON2

T717 Adjust for maximum output

5 Same as step 1

Frequency counter to

TP3

CT1

Adjust for 17.305MHz

(frequency – 10.695)

2.2 Carrier Alignment

STEP PRESET TO CONNECTIONS ADJUST PROCEDURE

TX mode, AM,

28.000MHz

Frequency counter to

TP3

CT2 Adjust for 28.000MHz

Noise Pulse

Generator

150GTL

Power

Supply

RF Signal

Generator

VTVM

Oscilloscope

8 ohm Load

1 2 3 4 5 6 7 8 ... 29 30

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Cobra 150GTLDX Bedienungsanleitung Seite 3