TB 9-6625-2339-24
(d)
Sweep, [Points 401].
(e)
FREQUENCY, 5, 0, [MHz].
(f)
SPAN, 1, 0, 0, [kHz].
AMPLITUDE, [Ref Level], 5, 5, [dBm].
(g)
(h)
[Attenuation], 1, 0, [dB].
(i)
[Scale/Div], 2, [dB].
(j)
BW/Avg, [Res BW], 3, 0, [kHz].
(k)
[Video BW], 1, 0, 0, [Hz].
(4) Verify signal peak 2 to 4 divisions below TI reference level.
(5) Press TI Peak Search (or Search), Marker, [Delta] keys.
(6) Set RF reference source to 70 dBm.
(7) Press TI AMPLITUDE, [Ref Level], 6, 5, [dBm] then [Attenuation], 0, [dB].
(8) Press TI Single, then Peak Search (or Search). TI Mkr1 indication will be
within limits specified in first row of table 10.
(9) Repeat (6) through (8) above for remaining RF reference source amplitude, TI
Ref Level and Atten settings listed in table 10.
Table 10. Input Attenuator Accuracy
RF reference
source
Test instrument
Mkr1 indications
Amplitude
Ref Level
Atten
settings
settings
settings
(dB)
(dBm)
(dBm)
(dB)
Min
Max
10.3
9.7
-70
-65
0
5.3
4.7
-65
-60
5
-55
-50
15
4.7
5.3
-50
-45
20
9.7
10.3
-45
-40
25
14.65
15.35
-40
-35
30
19.6
20.4
-35
-30
35
24.55
25.45
-30
-25
40
29.5
30.5
-25
-20
45
34.45
35.55
-20
-15
50
39.4
40.6
-15
-10
55
44.35
45.65
-10
-5
60
49.3
50.7
-5
0
65
54.25
55.75
(10) Set all outputs to minimum and disconnect equipment setup.
b. Adjustments. None.
13. Reference Level Accuracy
a. Performance Check
(1) Connect equipment as shown in figure 3.