Anritsu 682XXB User Manual
3-16
PULSE MODULATION
TEST: RF ON/OFF
RATIO
TEST: RF ON/OFF
RATIO
This pulse modulation test verifies that the ratio of RF on power to RF
off power is within specifications.
off power is within specifications.
Test Setup
Connect the equipment, shown in Figure 3-13, as
follows:
follows:
1. Connect the 682XXB/683XXB rear panel
10 MHZ
REF OUT
to the Spectrum Analyzer External Ref-
erence Input.
2. Connect the
RF OUTPUT
of the 682XXB/683XXB
to the Spectrum Analyzer RF Input.
Test
Procedure
Procedure
The following procedure lets you determine the ratio
of RF on power to RF off power during pulse modu-
lation.
of RF on power to RF off power during pulse modu-
lation.
1. Set up the 682XXB/683XXB as follows:
a. Reset the instrument by pressing
SYSTEM
,
then
Reset
. Upon reset, the CW Menu is dis-
played.
b. Press
Edit F1
to open the current frequency
parameter for editing.
c. Set F1 to the frequency noted on the Test Re-
cord.
d. Press
MODULATION
, then
Pulse
. The Inter-
nal Pulse Status menu is displayed.
682XXB/683XXB MM
3-45
PERFORMANCE
PULSE MODULATION TEST:
VERIFICATION
RF ON/OFF RATIO
10 MHz
REF OUT
682XXB / 683XXB
EXT REF
INPUT
RF OUT
Spectrum Analyzer
RF IN
Figure 3-13.
Equipment Setup for Pulse Modulation Test: RF On/Off Ratio