TB 9-5985-314-24
NOTE
Ensure equipment is connected as shown in figure 2 and has
completed the 3 hour warm-up before proceeding to (9) below.
above and RF OUTPUT controls for +3 dBm.
(10) Determine signal generator No. 2 frequency (LO) required for the desired
measurement by calculating the following equation: LO = (RF-IF)/2 where:
RF = test frequency recorded in 8 c above IF = intermediate frequency at
which receiver system is to perform measurement (0.700 GHz).
EXAMPLE:
Let IF = 0.700 GHz
RF = 18 GHz (test frequency 8 c above)
LO = signal generator frequency
LO = (RF-IF)/2
LO = (18 GHz-0.700 GHz)/2 LO = 17.3 GHz/2
LO = 8.65 GHz
Signal generator No. 2 frequency for this measurement would be 8.65 GHz.
NOTE
Use receiver system in 15% SEARCH MODE.
(11) Press receiver system frequency to 0.700 GHz.
RF OUTPUT to +8 dBm.
(13) Connect POINT A to POINT B (fig. 2) and establish a 0.00 dBm reference on
receiver system.
9