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PREAMPLIFIER OPERATIONS USE OF EXTERNAL PREAMPLIFIERS
ME7840A OMM 7-3
AUT
POWER
METER
OPTIONAL
SPECTRUM
ANALYZER
SYSTEM
CONTROLLER
(PC)
B2RF1 B1A1 A2
STEP
ATTENUATOR
70dB, 10dB/step
POWER
SUPPLY
COMBINER
RF2
OPTIONAL
MODULATION
SYNTHESIZER
-30dB
-30dB
-30dB
N
N
LIMITER
NK
K
K
KKN
N
N
KKKN
N
DIRECT RECEIVER
ACCESS
SCORPION
MS4782D Test Set
EXT I/O
SOURCE 2 SOURCE 1
STEP
ATTENUATORS
70dB, 10dB/step
RF3
FORWAR
D
REVERSE
TRANSFER SWITCH
RECEIVERS
CURRENT PROBE
ANALOG IN
GPIB
GPIB
CONTROL
LINES
OPTIONAL
EXTERNAL
PREAMPLIFIERS
-30dB
EXTERNAL
CIRCULATOR
N
NK
K
K
K
K
ATTENUATORS
100 W
TERMINATION
USER SUPPLIED
CIRCULATOR &
TERMINATION
Figure 7-1. MS4782A with External Preamplifiers (Moderate Power)