TB 9-6625-103-24
Table 3. Frequency Resolution Accuracy.
Microwave frequency counter indications
Test instrument
center frequency
Min
Max
(Hz)
(Hz)
(Hz)
10 M
9,999,980
10,000,020
50 M1
49,999,900
50,000,100
100 M
99,999,800
100,000,200
500 M
499,999,000
500,001,000
800 M
799,998,400
800,001,600
1 G2
999,998,000
1,000,002,000
2G
1,999,996,000
2,000,004,000
3G
2,999,994,000
3,000,006,000
4G
3,999,992,000
4,000,008,000
5G
4,999,990,000
5,000,010,000
6G
5,999,988,000
6,000,012,000
7G
6,999,986,000
7,000,014,000
8G
7,999,984,000
8,000,016,000
9G
8,999,982,000
9,000,018,000
10 G
9,999,980,000
10,000,020,000
15 G
14,999,970,000
15,000,030,000
20 G
19,999,960,000
20,000,040,000
25 G
24,999,950,000
25,000,050,000
30 G
29,999,940,000
30,000,060,000
Remove the 50 Ω termination and set the microwave counter to 50 Ω input impedance.
1
Move connection from Input 2 to Input 1.
2
b. Adjustments. Refer to paragraph 6 c.
9. Output Level Flatness
a. Performance Check
(1) Connect OPT 518 power sensor module to measuring receiver POWER REF
output.
(2) Zero and calibrate the power sensor.
(3) Disconnect the 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)
AMPD, 3, and dBm.
(d)
RF On/Off to On.
(e)
FREQ, 1, 0, and MHz.
(5) Using measuring receiver and RF power techniques in Log Mode sweep the TI
from 10 MHz to 2 GHz and record the highest and lowest levels.
(6) Replace OPT 518 power sensor with OPT 526 power sensor and repeat technique
of (4)(e) and (5) above for frequencies of 2 GHz to 26.5 GHz.
(7) Calculate the flatness using the formula below. The flatness will be less than or
equal to the maximum limit listed in table 4.
Flatness = (highest lowest)/ 2
Change 1
