TB 9-4931-523-35
APPENDIX B
(14) Calculate the second cal point using the formula -80 + signal generator No. 1
output level -40 dBm to result of step (12). (Example -80 dBm + (6 dBm) - (-1 dBm) = -73
dBm). Record this value, as 'Second Cal Point' in table B1 alongside the appropriate test
frequency.
(15) Set signal generator No. 1 to the level calculated in (14) above and press the
CALIBRATE key.
(16) Set signal generator No. 1 to the initial level of +6 dBm.
(17) Press 38.2 and SPCL keys and record the displayed value as 'First RF CAL
FAC' in table B1 alongside the appropriate test frequency.
(18) Press 38.3 and SPCL keys and record the displayed value as 'Second RF CAL
FAC' in table B1 alongside the appropriate test frequency.
(19) Press 38.4 and SPCL keys and record the displayed value as 'Set Ref CAL FAC'
in table B1 alongside the appropriate test frequency.
(20) Repeat steps (3) through (19) for each of the test frequencies in table B1.
(21) Press the FREQ and BLUE (SHIFT) AUTO TUNING keys.
(22) Set signal generator No. 1 to appropriate test frequency listed in table B1.
(23) Press the GOLD(S) TUNED RF LEVEL, 26.1 and SPCL keys.
NOTE
For frequencies below 1.3 GHz proceed to step (25) below.
(24) Press 27.3 SPCL, enter the appropriate offset frequency from table B1, and
press the MHz key. (Ignore the displayed frequency reading.)
(25) Set signal generator No. 2 for an output of +8 dBm and the appropriate offset
(26) Connect the attenuator at the INSERTION POINT as shown in figure 4.
(27) Adjust signal generator No. 1 for a power meter indication as recorded in table
B1 as
'Power Meter
Reading'.
(28) Press 39.2 SPCL and enter the 'First RF Cal Fac' from table B1 for the
appropriate frequency, and press the BLUE (SHIFT) % CAL FACTOR (MHz) keys.
(29) Press 39.3 SPCL and enter the 'Second RF Cal Fac' from table B1 for the
appropriate frequency, and press the BLUE (SHIFT) % CAL FACTOR (MHz) keys.
(30) Press 39.4 SPCL, enter the 'Set Ref Cal Fac' from table B1 for the appropriate
frequency, and press the BLUE (SHIFT) % CAL FACTOR (MHz) keys.
(31) Measure and record receiver system indication. Measured attenuation will be
within range and accuracies specified in appendix A for TI being calibrated.
B-4