Standard Input Signal; Rf Alignment - RF Technology Eclipse Series Operation And Maintenance Manual

6.1 Standard Input Signal

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
1 Select alignment
frequency channel
2 Signal generator on
centre frequency
channel to J1.
Modulation off.
3 As above
___________________________________________________________________________
RF Technology R800
Input
dc Volts on TP3 (next to
FL4)
dc Volts on test socket
pin 7 to pin 1
6 ALIGNMENT PROCEDURE
Measure
FL4 for maximum dc
volts
Generator level to
read 2-3Vdc
As above FL1,FL2,FL3 for
maximum reading.
Reduce generator
output to keep below
3Vdc.
Adjust
Page 13