Sailor RT2047 Manuel de service télécharger pdf (Page 92)

4 SERVICE RT2047 DSC - PART II

AA119

ceramic

1nF

ceramic

To multimeter

Metal tube

Insulating material

10.00 12.00 70.00

ø10

25079

LAYOUT OF THE PROBE

TEST PROBE

4.4 CALIBRATION OF THE TEST PROBE

For some test probe measurements it is necessary to use a test probe calibrated with a specified multi

meter.

NECESSARY EQUIPMENT FOR THIS PROCEDURE:

1. Diagram for the measurements

2. Test probe

3. Multi meter

4. New factory adjusted RT2047

4.5 PROCEDURE FOR CALIBRATION

1. Switch on the set.

2. Select channel 28.

3. Remove coax cable from the soldering point for F

L01

to RX on the RX-Synthesizer and replace

it with a 50 resistor.

4. Connect the test probe to the point mentioned above and record the result in the diagram.

5. Remove the resistor and solder back the coax cable.

6. Follow the procedure mentioned above by measuring the levels from F

L01

to TX on the RX-

Synthesizer and the TX drive level from the TX-Exciter.

All other test probe measurements are relative and ought to be measured with the same test probe and

recorded in the diagram.

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Sailor RT2047 Manuel de service Page 92