Tektronix RTX100B, Service Manual

Page: 99 / 178

Adjustment Procedures
RTX100B ISDB-T RF Signal Generator Service Manual
4-3
8. Use the Peak Search function of the spectrum analyzer to verify that the
carrier appears at
473.143 MHz
on the screen.
9. Turn off the Carrier output of the spectrum analyzer.
10. Adjust the DAC(I) Offset and DAC(Q) Offset values so that the carrier
leakage on the spectrum analyzer is less than --80 dBm.
11.
Change Reference Frequency (output channel) on the RTX100B and center
frequency on the spectrum analyzer as listed in Table 4-2, and repeat steps 5
through 10.
NOTE
. The center frequency settings for the spectrum analyzer are indicated by
boldface in the Table 4-2.
Table 4-2: Output channel and center frequency settings
CH
Center Frequency
(MHz)
CH
Center frequency
(MHz)
CH
Center frequency
(MHz)
13 473.143 30 575.143 47 677.143
14 479.143 31 581.143 48 683.143
15 485.143 32 587.143 49 689.143
16 491.143 33 593.143 50 695.143
17 497.143 34 599.143 51 701.143
18 503.143 35 605.143 52 707.143
19 509.143 36 611.143 53 713.143
20 515.143 37 617.143 54 719.143
21 521.143 38 623.143 55 725.143
22 527.143 39 629.143 56 731.143
23 533.143 40 635.143 57 737.143
24 539.143 41
641.143
58 743.143
25 545.143 42 647.143 59 749.143
26
551.143
43 653.143 60 755.143
27 557.143 44 659.143 61 761.143
28 563.143 45 665.143 62
767.143
29 569.143 46 671.143 ------ ----------------------