TB 9-6625-2296-35
14. Generator Spectral Purity
a. Performance Check
(1) Press key sequence listed in (a) through (f) below:
Meters Menu
(a) MODE MTRS ..........................
Auxiliary Function Menu
(b) AUX (F6) ..................................
Recall
(c) MEMORY RCL .......................
(d) FIELD SELECT ⇑ ...................
Highlight 10. Factory Defaults
Factory Defaults recall
(e) DATA ENTRY ENTER ..........
NOTE
Assure highlighted area indicates YES before proceeding.
Factory Defaults restored
(f) DATA ENTRY ENTER ..........
(2) Connect spectrum analyzer INPUT 50Ω to TI T/R IN/OUT.
(3) Press key sequence listed in (a) through (e) below:
RF Gen Display
(a) MODE RF GEN ..............................
RF Frequency
(b) Freq (F2)..............................................
1 MHz
(c) DATA ENTRY 1 M .................
RF Level
(d) Level (F3) ................................
0 dBm
(e) DATA ENTRY 0 ENTER .......
(4) Verify all spurious response across the band are more than 26 dBc down for
harmonics and more than 50 dBc down for nonharmonics.
(5) Repeat (3) (b), (c), and (4) above for frequencies of 10, 100, 200, 300, 400, 500,
600, 700, 800, and 900 MHz.
(6) Enter 500 K using TI DATA ENTRY keys.
NOTE
Brackets around a key callout denotes a softkey.
(7) Press spectrum analyzer key sequence listed in (a) through (m) below:
to reset spectrum analyzer
(a) PRESET ...................................
500 kHz
(c) [Center Freq] 500 kHz..........
Span menu
(d) SPAN X Scale .........................
50 kHz
(e) [SPAN] 50 kHz........................
BW menu
(f) BW/Avg ....................................
(g) [Res BW] 100 Hz.....................