TB 9-4931-534-35
NOTE
If out-of-tolerance condition is consistently indicated on
receiver system, replace adapters and repeat performance
check.
(8) Reverse TI connections at POINT A and POINT B (fig. 2). TI arrow must be
pointed against the signal flow from synthesized signal generator to receiver system.
(9) Isolation in dB (minimum) indication displayed on receiver system will be within
limits listed in Appendix A.
(10) Repeat (2) through (9) above for remaining test frequencies recorded in 7 a
above.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Connect equipment as shown in figure 3 with the following exception: Connect
POINT A and POINT B together. Allow equipment to warm up for 1 hour.
recorded in 7 a above and RF output control for a indication of -7 dBm.
(3) Determine the signal generator frequency (LO) required for the desired
measurement by calculating the following equation:
LO = (RF - IF) 2
Where: RF = frequency of synthesized signal generator from (2) above
IF = intermediate frequency at which receiver system is to perform
measurement (0.700 GHz)
EXAMPLE:
Let IF = 0.700 GHz
Let RF = 1 8 GHz from (2) above
Let LO = signal generator frequency
LO = (RF - IF) 2
LO = (1 8 GHz - 0.700 GHz) 2
LO = 17.3 GHz 2
LO = 8.65 GHz
