Agilent Technologies HP 8642A/B Specifiche Pagina 313

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DC FM can also be used to tune the HP 8662A/63A. DC FM provides
wide peak tuning range for measuring sources that have high close-in
noise or spurs, or that drift. DC FM will degrade the noise performance
of the HP 8662A/63A. The noise performance of the HP8662A/63A is
unspecified in DC FM mode. The graph shows typical performance.
Table 6-3. Maximum Peak Deviation for the HP 8662/63A
Center
Frequency
(MHz)
0.1 to 120
120 to 160
160 to 320
Maximum Peak
Deviation
DC Mode (kHz)
100
25
50
Center
Frequency
(MHz)
320 to 640
640 to 1280
1280 to 2560
Maximum Peak
Deviation
DC Mode (kHz)
100
200
400
SOURCE CONTROL FOR MEASUREMENT USING
ft
PHASE LOCK LOOP
DUT
USER'S SRCE
MftNUfiL CNTRL
REF SOURCE
SYSTEM CNTRL
TIME GflSE_
NOT !N USE
_DN C0NV._
NOT IN USE
HP 11648ft
TUNE VOLTAGE
-I.
/ Tune
DCFM Voltage
Ref. Tine Down
Source Elase Conver i
Figure 6-4. DC FM Tune Voltage
6-10 RF Sources
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