TB 9-6625-2280-35
(20) Connect RF detector A to POINT A (fig. 2).
(21) Adjust signal generator amplitude controls for a power meter indication equal to
P1 value recorded in (6) above.
(22) Record TI EL display indication as S1.
(23) Adjust signal generator amplitude controls for a power meter indication equal to
P2 value recorded in (12) above.
(24) Record TI EL display indication as S2.
(25) Divide S2 value recorded in (24) above into S1 value recorded in (22) above.
Record results as Y.
(26) Calculate linearity error (percent) using the below listed formula and record the
results in table 3 under the linearity error (%) column. Linearity error will be less than
linearity specification listed in table 3.
Linearity Error (%) = {[(Y/X) -1] x 100}
WHERE:
X = value recorded in (14) above
Y = value recorded in (25) above
Accumulated
linearity
Linearity
Linearity
Total
error sum
error
specification
(%)
(+%)
(+%)
(dB)
0
4
---
10
4
20
4
30
4
40
5
(27) Insert 10 dB attenuator (fixed) between POINT A (fig. 2) and RF detector A.
(28) Perform steps as listed in (a) through (c) below:
(a) (23) then (24).
(b) (21) then (22).
(c) (25) then (26).
(29) Add current linearity error to previous recorded linearity error in table 3.
Record accumulated linearity error in table 3. Accumulated linearity error sum will be less
than linearity specification listed in table 3.
(30) Replace 10 dB attenuator (fixed) with 20 dB attenuator (fixed) in figure 2
equipment setup.
(31) Repeat (21) through (26) above.
(32) Add current linearity error to previous recorded linearity error in table 3.
Record accumulated linearity error sum in table 3. Accumulated linearity error sum will be
less than linearity specification listed in table 3.
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