TB 9-4931-534-35
Signal generator frequency for this measurement would be set to 8.65 GHz.
output to +8 dBm.
(5) Establish a reference on receiver system at 0.700 GHz and press receiver system
MEAS-REF pushbutton.
(6) Connect TI between POINT A and POINT B (fig. 3) with the TI directional arrow
pointed towards the microwave frequency divider TEST PORT (fig. 3). The insertion loss
indication displayed on the receiver system will be within the limits listed in Appendix A.
(7) Reverse TI connection at POINT A and POINT B (fig. 3). TI arrow must be
pointed towards the microwave frequency divider SIGNAL PORT (fig. 3).
(8) Isolation in dB (minimum) indication displayed on receiver system will be within
(9) Remove TI from POINT A and POINT B (fig. 3).
(10) Connect POINT A and POINT B (fig. 3) together.
(11) Repeat (2) through (10) above for remaining test frequency (RF) recorded in 7 a above.
b. Adjustments. No adjustments can be made.
15. Insertion Loss and
Isolation (Isolator WG from
26.5 to 40 GHz)
a. Performance Check
(1) Connect equipment as shown in figure 4 with the following exceptions on
frequency extension kit: Replace directional coupler with 90-degree waveguide bend and
connect straight waveguide section between POINT A and POINT B. Allow equipment to
warm-up for 1 hour.
(2) Refer to test frequencies determined in 7 a above. Record these values here.
(3) Determine and record the signal generator frequency (RF) required for the
desired measurement by calculating the following equation:
RF = test frequency in GHz (2) above 3
EXAMPLE A: If first test frequency recorded in (2) above is 27 GHz:
RF = 27 3
RF = 9 or 9 GHz