RF Technology Eclipse Series Instructions d'exploitation télécharger pdf (Page 13)

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RF Technology R800 Page 13

6.1 Standard Input Signal 6 ALIGNMENT PROCEDURE

TCXO calibration may be required periodically due to crystal aging. The aging should be

less than 1ppm/year.

6.1 Standard Input Signal

RF Signal Generator

50? output impedence

Frequency range 806-950MHz

FM modulation at 1KHz

1.5KHz peak for 12.5KHz channel spacing

3.0KHz peak for 25KHz channel spacing

6.2 RF Alignment

Step Input Measure Adjust

1 Select alignment

frequency channel

dc Volts on TP3 (next to

FL4)

FL4 for maximum dc

volts

2 Signal generator on

centre frequency

channel to J1.

Modulation off.

dc Volts on test socket

pin 7 to pin 1

Generator level to

read 2-3Vdc

3 As above As above FL1,FL2,FL3 for

maximum reading.

Reduce generator

output to keep below

3Vdc.

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RF Technology Eclipse Series Instructions d'exploitation Page 13