TB 9-6625-2280-35
(49) Divide S2 value recorded in (48) above into S1 value recorded in (46) above.
Record results as Y.
(50) Calculate linearity error (percent) using the below listed formula and recording
the results in table 4 under the linearity error (%) column. Linearity error will be less than
linearity specification listed in table 4.
Linearity error (%) = {[(Y/X) - 1] x 100}
WHERE:
X = value recorded in (14) above
Y = value recorded in (49) above.
Accumulated
linearity
Linearity
Linearity
Total
error sum
error
specification
(%)
(+%)
(+%)
(dB)
0
4
10
4
20
7
30
39
(51) Insert 10 dB attenuator (fixed) between POINT A (fig. 2) and RF detector A.
(52) Perform steps as listed in (a) through (c) below:
(a) (47) then (48).
(b) (45) then (46).
(c) (49) then (50).
(53) Add linearity error to previously recorded linearity error in table 4. Record
linearity error in table 4. Accumulated linearity error sum will be less than linearity
specification listed in table 4.
(54) Replace 10 dB attenuator (fixed) with 20 dB attenuator (fixed) in figure 2
equipment setup.
(55) Repeat (45) through (50) above.
(56) Add linearity error to previous recorded linearity error in table 4. Accumulated
linearity error will be less than linearity specification listed in table 4.
(57) Disconnect equipment as shown in figure 2.
(58) Repeat 10 above for TI RF detector B input.
b. Adjustments. No adjustments can be made.
11. Analog Output Accuracy Test
a. Performance Check
frequency of 1000 MHz at 0 dBm (cw).
