TB 9-6625-103-24
Table 4. Output Level Flatness.
Start frequency
Stop frequency
Max limit (dB)
10 MHz
26.5 GHz
2.0
b. Adjustments. Refer to paragraph 6 c.
10. Output Level Accuracy
a. Performance Check
(1) Connect OPT 526 power sensor module to measuring receiver POWER REF
output. Connect TI 10 MHz OUT to measuring receiver Ext Ref In.
(2) Zero and calibrate the power sensor.
(3) Disconnect the measuring receiver power sensor module from the measuring
receiver POWER REF output and connect it to the TI RF Out.
(4) Press TI keys as listed in (a) through (e) below:
(a)
Preset.
(b)
RF On/Off to Off.
(c)
FREQ, 2, and GHz.
(d)
AMPD, 1, 3, dBm.
(e)
RF On/Off to On.
(5) Using measuring receiver and RF power techniques in Log Mode verify that the
measuring receiver indicates within tolerances listed in table 5.
(6) Using technique of (4)(d) and (5) above set the TI to the remaining levels listed
in table 5 and repeat technique (5) above.
Table 5. 2 GHz Output Level.
Test instrument
Measuring receiver
Measuring receiver
output level
Min (dB)
Max (dB)
(dB)
13
11.5
14.5
10
8.5
11.5
5
3.5
6.5
3
1.5
4.5
2
0.5
3.5
1
-0.5
2.5
0
-1.5
1.5
(7) Press AMPD, 0, and dBm.
(8) Using standard tuned level measurement techniques, verify the measuring
receiver indicates within minimum and maximum limits for TI output level as listed in
table 6 below.
(9) Use the TI arrow key to decrement the output level 10 dB, as indicated in
(10) Repeat technique (9) above for remaining TI output level settings listed in