TB 9-5985-314-24
ALTERNATE CALIBRATION PROCESS
FOR POWER SPLITTERS AND POWER DIVIDERS (10MHZ TO 18GHZ)
NOTE
Software package USATA PD-MAT () can be used in place of
steps 1 a (1) through 1 a (35) below, verifying that the TI meets
or exceeds accuracies listed in Appendix D. Copies of the
software package are available from Commander, U. S. Army
Aviation and Missile Command, ATTN: AMSAM-TMD-LW,
Redstone Arsenal, AL 35898-5000.
1. Alternate Calibration Process for Power Splitters and Power Dividers (10 MHz
to 18 GHz)
a. Performance Check
NOTE
When performing the following steps, if TI frequency range
above and below 1.3 GHz, it will be necessary to perform two
separate tests - one below and one above 1.3 GHz.
(1) Zero and calibrate power meter and measuring receiver RF power, then connect
equipment as shown in figure 7 (Connect POINT A to POINT B).
(2) Adjust signal generator No. 1 frequency controls to 10 MHz and RF OUTPUT
controls for +6 dBm.
(3) Press 4.0 SPCL keys and, if the AUTO TUNING indicator light is off, press the
measuring receiver FREQ and BLUE (SHIFT) AUTO TUNING keys.
NOTE
For frequencies below 1.3 GHz proceed to step (7) below.
NOTE
For frequencies 1.3 GHz and above, proceed to step (4) below.
For frequencies above 1.3 GHZ, the offset frequency should be
120.53 MHz above that of signal generator No. 1.
(4) Enter the test frequency into the measuring receiver and press the MHz key.
(5) Calculate and record the proper offset frequency and record it as the Offset
to produce a +8 dB output at offset frequency.
