I
-
Channel Measurements
Making Channel Measurements
Cross modulation test
1. Select a channel, turn off modulation, then press Main 1 of 3
CROSSMOD.
2. If you want to store the results to a RAM card, insert a formatted RAM
card into the analyzer’s card-insertion slot, press
m
display->card
,
then press (MODE)
(MODEI)
to return to channel measurement mode. Refer
to Chapter 3 for the procedure on formatting a RAM card.
3. If you want to print the results, press
Icopv).
4.
Press MAIN MENU to exit the test.
16:56:38
Oft
86,
1993
&7
CHi'oNNEL
m
(STO) MKR
I
4.388 kHz
m!l
CENTER 433.259 MHz
SPAN
8
Hz
YRES
BW 1BB kHz YUBW 1BB kHz
YSWP
28.0
nsec
MHIN
MENU
RT
Figure 2-19. Cross Modulation Measurement
Hints
For best results, the carrier-to-noise ratio of the system should be 40
dBc
or greater (in a 4 MHz noise
bandwidth).
2-30
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